97-32413. Schedule for Rating Disabilities; The Cardiovascular System  

  • [Federal Register Volume 62, Number 238 (Thursday, December 11, 1997)]
    [Rules and Regulations]
    [Pages 65207-65224]
    From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
    [FR Doc No: 97-32413]
    
    
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    DEPARTMENT OF VETERANS AFFAIRS
    
    38 CFR Part 4
    
    RIN 2900-AE40
    
    
    Schedule for Rating Disabilities; The Cardiovascular System
    
    AGENCY: Department of Veterans Affairs.
    
    ACTION: Final rule.
    
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    SUMMARY: This document amends that portion of the Department of 
    Veterans Affairs (VA) Schedule for Rating Disabilities addressing the 
    cardiovascular system. The effect of this action is to update the 
    cardiovascular system portion of the rating schedule to ensure that it 
    uses current medical terminology and unambiguous criteria, and that it 
    reflects medical advances that have occurred since the last review.
    
    EFFECTIVE DATE: This amendment is effective January 12, 1998.
    
    FOR FURTHER INFORMATION CONTACT: Caroll McBrine, M.D., Consultant, 
    Regulations Staff (213A), Compensation and Pension Service, Veterans 
    Benefits Administration, Department of Veterans Affairs, 810 Vermont 
    Avenue NW, Washington, DC 20420, (202) 273-7230.
    
    SUPPLEMENTARY INFORMATION: As part of a comprehensive review of the 
    rating schedule, VA published, in the Federal Register of January 19, 
    1993 (58 FR 4954-60), a proposal to amend 38 CFR 4.100, 4.101, 4.102, 
    and 4.104. Interested persons were invited to submit written comments, 
    suggestions, or objections on or before March 22, 1993. We received 
    comments from the Disabled American Veterans, the Veterans of Foreign 
    Wars, the Paralyzed Veterans of America, the American Legion, and 
    several VA employees.
        One commenter, stating that the primary objective of the review is 
    to update the medical terminology and criteria used to evaluate 
    disabilities rather than to amend the percentage evaluations, 
    contended, without being specific, that a substantial number of the 
    proposed changes go beyond the stated purpose and expressed general 
    opposition to any changes that are inconsistent with the stated 
    objective. The commenter also stated that the proposed criteria retain, 
    and in some cases expand upon, the vague, indefinite, and arbitrary 
    elements previously found in the schedule and felt that substantial 
    revision of the proposed rules is required.
        The purpose of the review was to update the cardiovascular system 
    portion of the rating schedule to ensure that it uses current medical 
    terminology and unambiguous criteria, and that it reflects medical 
    advances that have occurred since the last review. The proposed 
    revisions published January 19, 1993, were intended to update the 
    medical terminology; revise the criteria, including the length of 
    convalescence evaluations, based on medical advances; and make criteria 
    more objective, i.e., less ambiguous and, thereby, assure more 
    consistent ratings. These proposed changes were consistent with the 
    stated purposes of the revision. However, since establishing less 
    ambiguous criteria to assure consistent evaluations is one of the 
    purposes of this revision, and a number of commenters stated that the 
    proposed criteria contained language that is too subjective to provide 
    effective guidance in evaluating cardiovascular disabilities, we have 
    further revised the proposed evaluation criteria to eliminate 
    indefinite terminology and establish more objective and quantifiable 
    criteria wherever possible. These changes will be discussed in detail 
    under the individual codes affected.
        One commenter suggested that the proposed criteria will 
    discriminate against veterans of Desert Storm and future veterans 
    because their conditions will be evaluated under criteria that he 
    perceived as less generous than those in the prior rating schedule.
        Significant medical advances, including new surgical and anesthetic 
    techniques, new medications, and earlier diagnoses, have occurred, 
    which we must take into account in revising the rating schedule. Doing 
    so is, in fact, one of the primary reasons for conducting this review. 
    Since recently discharged veterans clearly benefit from the application 
    of these new techniques, in our judgment they are not discriminated 
    against by having their disabilities evaluated under criteria which 
    reflect the effects of these same medical advances.
        One commenter objected that the rating schedule fails to take into 
    consideration the disabling effects of the veteran's shortened life 
    expectancy.
        To consider a factor so far removed from ``the average impairments 
    of earning capacity'' as the effect of various conditions on life 
    expectancy would clearly exceed the parameters established by Congress 
    in 38 U.S.C. 1155.
        One commenter, citing a statistical economic validation study from 
    the 1960s, implied that statistical studies may justify increased 
    disability evaluations.
        The statute (38 U.S.C. 1155) authorizing establishment of the 
    rating schedule directs that ``[t]he Secretary shall from time to time 
    readjust the schedule of ratings in accordance with experience'' 
    (emphasis supplied). Rather than requiring statistical studies or any 
    other specific type of data, the statute clearly leaves the nature of 
    the experience which warrants an adjustment, and by extension the 
    manner in which any review is conducted, to the discretion of the 
    Secretary. Although during the 1970s VA considered adjusting the rating 
    schedule based on the same statistical studies cited by the commenter, 
    that approach proved to be unsatisfactory, and the proposed changes 
    based on that study were not adopted.
        One commenter agreed that ambiguous words such as ``severe'' should 
    be deleted, but cautioned against making the evaluation criteria too 
    objective.
        Providing clear and objective criteria is the best way to assure 
    that disabilities will be evaluated fairly and consistently. Judgment 
    and flexibility cannot be eliminated from the evaluation process, 
    however, because patients do not commonly present as textbook models of 
    disease, and rating agencies have the task of assessing which 
    evaluation level best represents the overall disability picture. (See 
    Sec. 4.7.)
        The previous schedule provided convalescence evaluations for six
    
    [[Page 65208]]
    
    months for the following conditions: rheumatic heart disease (DC 7000); 
    arteriosclerotic heart disease, following coronary occlusion (DC 7005); 
    myocardial infarction (DC 7006); and soft tissue sarcoma (of vascular 
    origin) (DC 7123). It provided convalescence evaluations for one year 
    for the following conditions: Auriculoventricular block, with 
    implantation of a pacemaker (DC 7015); heart valve replacement (DC 
    7016); coronary artery bypass (DC 7017); and aortic aneurysm, following 
    surgical correction (DC 7110). We proposed to change the duration of 
    convalescence evaluations for DC 7000, DC 7005, and DC 7006 to three 
    months; for DC 7018 (pacemaker implantation, formerly DC 7015) to two 
    months; and for DC 7017 to three months. We proposed an indefinite 
    period of convalescence evaluation with an examination at six months 
    for DC 7016, DC 7110, DC 7011 (now ventricular arrhythmias), DC 7111 
    (aneurysm of any large artery), and DC 7123. We also proposed an 
    indefinite period of convalescence evaluation, but with an examination 
    at one year, for cardiac transplantation (DC 7019).
        One commenter stated that VA should justify the proposed changes in 
    periods of convalescence evaluation by citing medical experts or texts.
        A report from Jefferson Medical College that included a clinical 
    review of the cardiovascular portion of the rating schedule and 
    recommendations for changes was available to us when we undertook the 
    revision of this body system. In addition, we received advice from the 
    Veterans Health Administration and consulted standard medical texts 
    such as ``Cecil Textbook of Medicine'' (James B. Wyngaarden, M.D. et 
    al. eds., 19th ed. 1992), ``Heart Disease'' (Eugene Braunwald, M.D. 
    ed., 4th ed. 1992), and ``The Heart'' (J. Willis Hurst, M.D. et al. 
    eds., 7th ed. 1990). We published the proposed revision only after 
    reviewing all of these sources of information. We have provided 
    specific citations supporting many of the changes in the length of 
    convalescence evaluations later in this document under the discussions 
    of convalescence evaluation periods that have been changed.
        One commenter stated that the proposed periods of convalescence 
    evaluation do not represent the average impairment, but only the 
    optimal recovery times. This commenter also stated that the changes in 
    the duration of convalescence evaluations do not take into account 
    advanced age, poor state of health, or the presence of etiologically 
    related or concomitant disease.
        The periods of convalescence evaluation we have established 
    reflect, according to the sources noted above, the average periods of 
    recovery needed by the average person following certain procedures and 
    illnesses. These periods can be extended, when medically warranted, 
    under the authority of 38 CFR 4.29 and 4.30.
        One commenter said that the proposed changes in the length of 
    convalescence evaluations appear to have been developed from a purely 
    economic perspective.
        As previously discussed, revisions to periods of convalescence 
    evaluations were based on medical considerations rather than cost 
    projections.
        One of the commenters suggested that where the length of 
    convalescence evaluations has been reduced to two, three, or six 
    months, all claims should be referred to the Adjudication Officer for a 
    possible extension of the convalescence rating under 38 CFR 4.30(b)(2).
        The rating agency itself has the authority to extend the period of 
    convalescence evaluations for up to three months under the provisions 
    of Sec. 4.30; the approval of the Adjudication Officer is required only 
    when extending a convalescence evaluation for a longer period. 
    Referring claims to the Adjudication Officer when the medical evidence 
    does not warrant any extension, or when the rating agency can extend 
    the evaluation for a sufficient period on its own authority, would 
    cause needless delay, and we have made no change based on this 
    suggestion.
        Several commenters objected to indefinite periods of convalescence 
    evaluation with a mandatory VA examination at a prescribed time. In our 
    judgment, however, this method of determining the length of the total 
    evaluation is both fairer and more accurate than assigning a total 
    evaluation for a specified length of time, since the evaluation will be 
    based on actual residual disability as documented by the examination, 
    and the veteran will receive advance notice of any change and have the 
    opportunity to submit additional evidence showing that the change is 
    not warranted.
        One set of comments reflected the view that applying Sec. 3.105(e) 
    to indefinite periods of convalescence evaluations will cause 
    significant administrative problems and, in some instances, 
    significantly lengthen the period for which a convalescence evaluation 
    is assigned. These concerns appear to be based on the assumption that 
    if medical information justifying a certain period of convalescence 
    evaluation is not submitted until months or even years after the event, 
    the condition must be evaluated as totally disabling from the date 
    entitlement is established, through the entire intervening period, and 
    until such time as an examination can be performed, advance notice be 
    provided, and the effective date provisions of Sec. 3.105(e) be 
    observed.
        Section 3.105(e) applies only to reductions in ``compensation 
    payments currently being made;'' it does not apply in cases where a 
    total evaluation is both assigned and reduced retroactively. We have 
    established convalescence evaluations for indefinite periods under 
    other portions of the rating schedule (See DC 7528, malignant neoplasms 
    of the genitourinary system, in 38 CFR 4.115b and DC 7627, malignant 
    neoplasms of gynecological system or breast, in 38 CFR 4.116), some 
    having been in effect for over two years, and there is no evidence that 
    they cause the type of administrative problems that the commenters 
    foresee.
        There were three introductory sections to the cardiovascular system 
    in the previous rating schedule. Section 4.100, Necessity for complete 
    diagnosis, named common types of heart disease and discussed the need 
    for accurate diagnosis. Section 4.101, Rheumatic heart disease, 
    discussed the course of rheumatic heart disease, the significance of a 
    diagnosis of mitral insufficiency, possible etiologies for later 
    developing aortic insufficiency, and the need for accurate diagnosis of 
    a service-connected condition. Section 4.102, Varicose veins and 
    phlebitis, discussed the need to determine impairment of deep 
    circulation due to varicosities and included a requirement to assign a 
    higher evaluation when there is phlebitis or deep impairment of 
    circulation. We proposed to retitle the introductory sections: 4.100, 
    as ``Forms of heart disorder;'' 4.101, as ``Hypertension;'' and 4.102, 
    as ``Varicose veins.'' We proposed to include in Sec. 4.100 a list of 
    common forms of heart abnormalities, a discussion of how to evaluate 
    service-connected valvular heart disease or arrhythmia in the presence 
    of nonservice-connected arteriosclerotic heart disease, and a statement 
    that the identification of coronary artery disease (without occlusion 
    or thrombosis) early in service is not a basis for service connection, 
    but that any sudden development of coronary occlusion or thrombosis 
    during service would be service-connected. However, as explained below, 
    we have either deleted or relocated all of the material we had proposed 
    to include in Secs. 4.100, 4.101,
    
    [[Page 65209]]
    
    and 4.102, and we have, therefore, removed those sections and reserved 
    them for future use.
        One commenter suggested that we remove all material in Secs. 4.100, 
    4.101, and 4.102 that refer to the issue of service connection because 
    it is inappropriate to place criteria for determining entitlement to 
    service connection in the rating schedule. A second commenter suggested 
    that the material about the identification of coronary artery disease 
    early in service not being a basis for service connection should be 
    removed because the provision violates the statutory presumption of 
    soundness at induction as set forth in 38 U.S.C. 1111.
        The rules governing determinations of service connection are found 
    in the regulations beginning at 38 CFR 3.303, rather than in the rating 
    schedule, which is a guide to evaluating disabilities. We agree that 
    rules affecting determinations of service connection are inappropriate 
    in the rating schedule, and we have removed that portion of the 
    material in Sec. 4.100 that addressed the issue of service connection 
    for coronary artery disease for that reason. We have also removed other 
    provisions of Secs. 4.101 and 4.102 that addressed service connection 
    for cardiovascular conditions, as discussed below.
        We had proposed including in Sec. 4.102, varicose veins, a 
    provision from VA's Adjudication Procedures Manual, M21-1, Part VI, 
    that if varicose veins developed during active service in one leg, 
    varicose veins developing in the other leg within three years, in the 
    absence of an intercurrent cause, will also be service-connected. 
    However, in response to this comment, we have determined that since it 
    addresses the issue of service connection, it is not appropriate in the 
    rating schedule, and we have removed it.
        Two commenters suggested that these introductory sections specify 
    which cardiovascular diseases should be service-connected when they 
    develop subsequent to certain amputations.
        38 CFR 3.310(b) provides that ``ischemic heart disease or other 
    cardiovascular diseases'' developing in veterans who have suffered a 
    service-connected amputation of one lower extremity at or above the 
    knee, or service-connected amputations of both lower extremities at or 
    above the ankles, shall be held to be the result of the service-
    connected amputation or amputations. Since that issue is addressed 
    elsewhere in VA's regulations, it is unnecessary to address it here. 
    Furthermore, as previously discussed, it would be inappropriate to 
    include material about the determination of service connection in the 
    rating schedule.
        One commenter recommended that we include more discussion of 
    pertinent clinical and nonclinical factors to be considered in 
    assigning evaluations within this portion of the rating schedule.
        We have made a number of changes along these lines that will assist 
    in the evaluation of cardiovascular conditions. Most significantly, we 
    have adopted more objective evaluation criteria based on specific 
    clinical (and, in some cases, laboratory) findings, e.g., by using the 
    level of METs (metabolic equivalents, discussed in detail below) to 
    assess the severity of heart disease. In addition, we have retained or 
    added notes, as appropriate, containing clinical information, e.g., by 
    adding a note defining characteristic attacks of Raynaud's syndrome.
        One commenter suggested that Sec. 4.100 discuss forms of heart 
    disorder, Sec. 4.101 discuss hypertension, and Sec. 4.102 discuss 
    varicose veins.
        A regulation is an agency statement of general applicability and 
    future effect, which the agency intends to have the force and effect of 
    law, that is designed to implement, interpret, or prescribe law or 
    policy, or to describe the procedure or practice requirements of an 
    agency (Executive Order 12866, Regulatory Planning and Review). 
    Background material, such as general medical information that is 
    available in standard textbooks, or other material that neither 
    prescribes VA policy nor establishes procedures a rating activity must 
    follow, falls outside of those parameters and is, therefore, not 
    appropriate in a regulation. The material about the age of onset, 
    course, etc., of rheumatic fever in former Sec. 4.101 is general 
    medical information which has no bearing on evaluating the condition, 
    and we have deleted this material as not appropriate in a regulation. 
    Upon further review, we have deleted the list of heart abnormalities 
    from proposed Sec. 4.100 because it too is general medical information 
    that we do not intend to have the force and effect of law.
        We proposed to retitle Sec. 4.101 ``Hypertension,'' and to revise 
    the content to include a prohibition against separately evaluating 
    hypertension that is secondary to thyroid or renal disease; and a 
    requirement that, in a veteran with service-connected hypertension, 
    arteriosclerotic manifestations are to be service-connected. One 
    commenter suggested adding more information to Sec. 4.101 about 
    secondary hypertension, to include specifying when secondary 
    hypertension can be evaluated separately from the condition causing it.
        The rule regarding evaluation of hypertension secondary to renal 
    disease is included in the part of the rating schedule addressing the 
    genitourinary system at Sec. 4.115; secondary hypertension associated 
    with aortic insufficiency or thyroid disease, and isolated systolic 
    hypertension, which may be secondary to arteriosclerosis, are addressed 
    under DC 7101 (hypertensive vascular disease). Since the issue of 
    service connection of secondary hypertension is addressed in more 
    appropriate areas of the regulations, it should not be addressed here, 
    and rather than expanding this material, we have deleted it from 
    Sec. 4.101.
        The material in proposed Sec. 4.101 about conditions that are 
    complications of hypertension or other medical conditions is also 
    general medical information available in standard texts. As discussed 
    above, it is not appropriate in a regulation, and we have, therefore, 
    removed it. The issue of service connection for conditions that are 
    proximately due to or the result of a service-connected condition is 
    addressed at 38 CFR 3.310(a). It is, therefore, unnecessary to address 
    the issue in Sec. 4.101, and we have removed that material also.
        In the former schedule, Sec. 4.102, which was titled ``Varicose 
    veins and phlebitis,'' discussed the necessity of testing for 
    impairment of deep circulation in varicose veins. We proposed to 
    retitle it ``Varicose veins'' but to retain the material about deep 
    circulation. Under the revised evaluation criteria for varicose veins 
    adopted in this rule, however, determining whether the deep circulation 
    is impaired is unnecessary because the evaluation criteria focus on 
    functional impairment rather than the location of the venous 
    insufficiency. We have, therefore, deleted that material from 
    Sec. 4.102.
        Another commenter requested that we address in Sec. 4.101 the 
    advances in medical science or objective foundation for requiring that 
    adjudicators attempt to apportion cardiac signs and symptoms that are 
    attributable to nonservice-connected arteriosclerotic heart disease 
    that is superimposed on service-connected rheumatic heart disease.
        While it is often possible through modern technology to determine 
    the separate effects of coexisting heart diseases, such a determination 
    requires a medical assessment on a case-by-case basis and cannot be 
    determined by regulation. We have, therefore, revised the material to 
    require that the rating agency request a medical opinion when it is 
    necessary to determine whether
    
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    current signs and symptoms can be attributed to one of the coexisting 
    conditions. Since the material is not relevant to the entire 
    cardiovascular portion of the rating schedule, we have moved it to a 
    note under DC 7005, arteriosclerotic heart disease.
        One commenter suggested adding a section to explain which 
    diagnostic codes should not be combined in the case of coexisting 
    cardiovascular diseases.
        As in the case of coexisting heart diseases, determining whether 
    coexisting cardiovascular diseases have functional impairments that can 
    be separately evaluated must be determined on a case-by-case basis, 
    depending on the particular manifestations of each condition. We, 
    therefore, make no change based on this suggestion.
        One commenter recommended that we include cor pulmonale in the 
    cardiovascular portion of the schedule.
        Cor pulmonale is a combination of hypertrophy and dilatation of the 
    right ventricle secondary to pulmonary hypertension, which is due to 
    disease of the lung parenchyma or pulmonary vascular system (Braunwald, 
    1581). Since cor pulmonale is always secondary to a lung condition, and 
    since it is included in the evaluation criteria for various conditions 
    of the respiratory system, in our judgment it is not appropriate to 
    include it in the cardiovascular portion of the rating schedule. For 
    the sake of clarity, however, we have placed a note in Sec. 4.104 
    before DC 7000 instructing rating agencies to evaluate cor pulmonale as 
    part of the pulmonary condition that causes it.
        The previous rating schedule provided a 100-percent evaluation for 
    rheumatic heart disease (DC 7000) ``as active disease and, with 
    ascertainable cardiac manifestation, for a period of six months.'' We 
    proposed to retitle DC 7000 ``valvular heart disease,'' and to provide 
    a 100-percent evaluation for ``active infections with valvular heart 
    damage for three months following cessation of therapy.''
        Three commenters objected to the proposed change in the length of 
    the convalescence evaluation for DC 7000 (valvular heart disease).
        Rheumatic fever is the condition most commonly associated with 
    valvular heart damage, and its acute phase rarely lasts longer than 
    three months (Braunwald, 1729). The level of activity following this 
    period depends on the severity of residual disease (Cecil, 1637). While 
    in the past patients with acute rheumatic fever were put to bed for 
    several months, bed rest is no longer considered necessary unless there 
    is significant carditis (Hurst, 1527). In addition, most rebounds of 
    rheumatic fever (that is, reappearances of clinical or laboratory 
    evidence of acute rheumatic fever following cessation of treatment) 
    occur within two weeks after cessation of therapy, and do not occur 
    more than five weeks after complete cessation of anti-rheumatic therapy 
    (Braunwald, 1730). In our judgment, three months following cessation of 
    therapy is a reasonable period to allow for stabilization of valvular 
    damage due to infection, and we have retained the convalescence 
    provision as proposed, except for minor editorial changes.
        We proposed that valvular heart disease (DC 7000) be evaluated on 
    the basis of the level of physical activity, i.e., ``any,'', 
    ``ordinary,'' or ``strenuous,'' required to produce cardiac symptoms, 
    such as ``dyspnea,'' ``fatigue,'' etc. We received three comments 
    objecting to the proposed criteria.
        One commenter suggested that although the proposed general rating 
    formula for rheumatic heart disease (DC 7000), arteriosclerotic heart 
    disease (DC 7005), and ventricular arrhythmia (DC 7011) is consistent 
    with the classifications of the New York Heart Association, they are 
    mostly for subjective complaints, and the commenter suggested that the 
    current criteria be retained except for deleting words like 
    ``characteristic'' and ``definitely.'' Another commenter stated that 
    the proposed criteria for valvular heart disease are highly subjective 
    and urged that we adopt objectively confirmable criteria at every 
    level.
        We agree that more objective criteria would result in more 
    consistent evaluations. In our judgment, however, simply removing such 
    terms as ``characteristic'' and ``definitely'' from the criteria in the 
    previous schedule would not have the intended effect. We have, 
    therefore, revised the criteria to incorporate objective measurements 
    of the level of physical activity, expressed in METs (metabolic 
    equivalents), at which cardiac symptoms develop. This does not 
    represent a substantive change in the method of evaluating cardiac 
    disabilities that we proposed, i.e., basing evaluations on the level of 
    physical activity that causes symptoms, but is an objective method for 
    measuring the level of activity that causes symptoms.
        The exercise capacity of skeletal muscle depends on the ability of 
    the cardiovascular system to deliver oxygen to the muscle, and 
    measuring exercise capacity can, therefore, also measure cardiovascular 
    function. The most accurate measure of exercise capacity is the maximal 
    oxygen uptake, which is the amount of oxygen, in liters per minute, 
    transported from the lungs and used by skeletal muscle at peak effort 
    (Braunwald, 1382). Because measurement of the maximal oxygen uptake is 
    impractical, multiples of resting oxygen consumption (or METs) are used 
    to calculate the energy cost of physical activity. One MET is the 
    energy cost of standing quietly at rest and represents an oxygen uptake 
    of 3.5 milliliters per kilogram of body weight per minute. The 
    calculation of work activities in multiples of METs is a useful 
    measurement for assessing disability and standardizing the reporting of 
    exercise workloads when different exercise protocols are used 
    (Braunwald, 162).
        We have revised the evaluation criteria for the major types of 
    heart disease based on: the level of physical activity, expressed in 
    METs, that leads to cardiac symptoms; whether there is heart failure; 
    the extent of any left ventricular dysfunction; the presence of cardiac 
    hypertrophy or dilatation; and the need for continuous medication. We 
    had proposed that valvular heart disease (DC 7000) be evaluated on the 
    basis of the level of physical activity that produces symptoms--100 
    percent if ``any,'' 60 percent if ``ordinary,'' and 30 percent if 
    ``strenuous'' activity produces symptoms. We have revised those 
    criteria to assign a 100-percent evaluation if a workload of three METs 
    or less produces dyspnea, fatigue, angina, dizziness, or syncope. A 
    workload of three METs represents such activities as level walking, 
    driving, and very light calisthenics. We have revised the criteria to 
    assign a 60-percent evaluation if a workload of greater than three METs 
    but not greater than five METs results in cardiac symptoms. Activities 
    that fall into this range include walking two and a half miles per 
    hour, social dancing, light carpentry, etc. We have revised the 
    criteria to assign a 30-percent evaluation if a workload of greater 
    than five METs but not greater than seven METs produces symptoms. 
    Activities that fall into this range include slow stair climbing, 
    gardening, shoveling light earth, skating, bicycling at a speed of nine 
    to ten miles per hour, carpentry, and swimming (Fox, S. M. III, 
    Naughton, J.P., Haskell, W.L.: Physical activity and the prevention of 
    coronary heart disease. Ann. Clin. Res., 3:404, 1971 and Goldman, L. et 
    al.: Comparative reproducibility and validity of systems for assessing 
    cardiovascular functional class: Advantages of a new specific activity
    
    [[Page 65211]]
    
    scale. Circulation 64:1227, 1981). METs are measured by means of a 
    treadmill exercise test, which is the most widely used test for 
    diagnosing coronary artery disease and for assessing the ability of the 
    coronary circulation to deliver oxygen according to the metabolic needs 
    of the myocardium (Cecil, 175 and Harrison, 966).
        Administering a treadmill exercise test may not be feasible in some 
    instances, however, because of a medical contraindication, such as 
    unstable angina with pain at rest, advanced atrioventricular block, or 
    uncontrolled hypertension. We have, therefore, provided objective 
    alternative evaluation criteria, such as cardiac hypertrophy or 
    dilatation, decreased left ventricular ejection fraction, and 
    congestive heart failure, for use in those cases. We have also 
    indicated that when a treadmill test cannot be done for medical 
    reasons, the examiner's estimation of the level of activity, expressed 
    in METs and supported by examples of specific activities, such as slow 
    stair climbing or shoveling snow that results in dyspnea, fatigue, 
    angina, dizziness, or syncope, is acceptable.
        The other objective criteria that we have added as alternatives to 
    the METs-based criteria for valvular heart disease are a left 
    ventricular ejection fraction of less than 30 percent or chronic 
    congestive heart failure for a 100-percent evaluation; a left 
    ventricular ejection fraction of 30 to 50 percent, or more than one 
    episode of acute congestive heart failure in the past year for a 60-
    percent evaluation; evidence of cardiac hypertrophy or dilatation on 
    electrocardiogram, echocardiogram, or X-ray for a 30-percent 
    evaluation, and a requirement for continuous medication for a 10-
    percent evaluation.
        Since neurologic, gastrointestinal, and other cardiovascular 
    disorders may result in symptoms similar to those for valvular heart 
    disease, we have also added a requirement that valvular heart disease 
    be documented by findings on physical examination and by 
    echocardiogram, Doppler echocardiogram, or cardiac catheterization.
        Another commenter felt that the proposed criteria for the 100-
    percent level for valvular heart disease (DC 7000), arteriosclerotic 
    heart disease (DC 7005), and ventricular arrhythmias (DC 7011)--that 
    ``any'' physical activity results in specified cardiac symptoms--
    correlates not with total industrial impairment but with being 
    housebound or helpless. Similarly, the commenter objected that the 
    requirement for the 60-percent level--that ``ordinary'' physical 
    activity results in symptoms--actually represents total impairment.
        The proposed criteria for the 100-percent level of these conditions 
    were meant to indicate a severe level of impairment, but the language 
    was imprecise and perhaps suggested a degree of impairment beyond total 
    impairment. Under the more objective criteria that we are adopting 
    here, a 100-percent evaluation requires that a workload of three METs 
    or less produces dyspnea, fatigue, angina, dizziness, or syncope. A 
    workload of three METs includes such activities as level walking, 
    driving, and very light calisthenics. While the development of cardiac 
    symptoms at this level of activities indicates total impairment, it 
    does not suggest that the patient is either housebound or helpless. 
    Similarly, under the more objective criteria, a 60-percent evaluation 
    requires that a workload of greater than three METs but not greater 
    than five METs produces cardiac symptoms. Since activities that fall 
    into this range include walking two and a half miles per hour, social 
    dancing, and light carpentry, this range does not represent total 
    impairment. In our judgment, by adopting more objective criteria, we 
    have eliminated the problem that the commenter identified.
        The prior schedule assigned a 10-percent evaluation under DC 7000 
    (rheumatic heart disease, now designated as valvular heart disease), 
    when there was an identifiable valvular lesion, with little dyspnea and 
    no cardiomegaly. We proposed to delete the 10-percent level and to 
    evaluate the condition as zero percent disabling if it does not limit 
    physical activity.
        Two commenters objected to the proposed deletion of a 10-percent 
    level of evaluation for valvular heart disease. One suggested a 10-
    percent evaluation when dietary adjustments and medication are 
    necessary to control symptoms or prevent emboli; the other suggested a 
    10-percent evaluation for asymptomatic valvular heart disease or 
    arrhythmias that require medication.
        Upon further consideration, we have added a 10-percent evaluation, 
    which will be assigned when symptoms develop at a workload of greater 
    than 7 METs but not greater than 10 METs. Activities that fall into 
    this range include jogging, playing basketball, digging ditches, and 
    sawing hardwood. When symptoms develop only during such activities, 
    there may be some impairment of earning capacity, but it is likely to 
    be slight. We have also established an alternative criterion for a 10-
    percent evaluation--the need for continuous medication--consistent with 
    the 10-percent evaluations assigned under other body systems, e.g., 
    gynecological and endocrine conditions, when continuous medication is 
    required. We have also deleted the zero-percent level of evaluation as 
    unnecessary, since zero percent may be assigned under any diagnostic 
    code when the criteria for a compensable evaluation are not met (38 CFR 
    4.31).
        DC 7000 was titled ``rheumatic heart disease'' in the previous 
    schedule. We proposed to retitle it ``valvular heart disease,'' and to 
    specify that it included rheumatic heart disease, syphilitic heart 
    disease, and sequelae involving valvular heart damage from 
    endocarditis, pericarditis, or trauma. Because each of the conditions 
    listed under DC 7000 (except trauma) has its own diagnostic code and 
    criteria, we have revised the title to ``valvular heart disease 
    (including rheumatic heart disease)'' and deleted the list of 
    conditions. The term ``valvular heart disease'' encompasses all types 
    of valvular disease not otherwise specified, including those due to 
    trauma.
        We proposed to require that endocarditis (DC 7001), pericarditis 
    (DC 7002), and pericardial adhesions (DC 7003) be rated as valvular 
    heart disease. We have instead repeated the evaluation criteria under 
    each diagnostic code to which they apply. We have also deleted the 
    three-month period of convalescence evaluation that would have been 
    available for pericardial adhesions if evaluated strictly under the 
    criteria for valvular heart disease (DC 7000); pericardial adhesions 
    are a chronic condition rather than an acute infection, and a 
    convalescence evaluation is, therefore, inappropriate.
        We proposed that syphilitic heart disease (DC 7004) be evaluated 
    under the criteria for either valvular heart disease or aortic aneurysm 
    (DC 7110). We have now provided criteria for DC 7004 that are based on 
    the same objective measurements of the level of physical activity that 
    causes symptoms. We placed a note following this diagnostic code 
    directing that syphilitic aortic aneurysms be evaluated under DC 7110 
    (aortic aneurysm), since the criteria under DC 7110 apply to aortic 
    aneurysm of any etiology. Since syphilitic heart disease has no phase 
    of active infection, being the late result of a much earlier syphilitic 
    infection, we have omitted the criteria based on active infection, as 
    we did under DC 7003.
        We proposed to revise the length of convalescence evaluation 
    following a myocardial infarction (DC 7005 or 7006) from six months to 
    three months. One commenter objected that three months represents the 
    optimal, rather than the
    
    [[Page 65212]]
    
    average, recovery period following myocardial infarction.
        The interval between an uncomplicated myocardial infarction and 
    return to work is 70-90 days (Braunwald, 1390), and a return to work 
    evaluation can be performed within five weeks after an uncomplicated 
    myocardial infarction (``The Heart'' 1115 (J. Willis Hurst, M.D. et al. 
    eds., 7th ed. 1990)). Complete healing of the myocardium, i.e., 
    replacement of the infarcted area by scar tissue, takes six to eight 
    weeks, and most patients will be able to return to work by 12 weeks, 
    many much earlier (``Harrison's Principles of Internal Medicine'' 956-
    57 (Jean D. Wilson, M.D. et al. eds., 12th ed. 1991)). This information 
    clearly establishes that most patients with myocardial infarction 
    recover within three months, and, in our judgment, that is an adequate 
    period for a convalescence evaluation.
        Another individual said that three months is not an adequate length 
    of convalescence evaluation following myocardial infarction because it 
    takes six months, which according to the commenter is the normally 
    accepted recovery time, for ancillary circulation patterns to develop.
        The development of collateral circulation represents a long-range 
    adaptation to ischemia due to coronary artery disease (Hurst, 944). It 
    is, therefore, more relevant in predicting whether an infarction will 
    occur or how severe it might be, than in determining the length of 
    convalescence after infarction, and we have made no change based on 
    this comment.
        In response to requests for more objective criteria, we have 
    adopted criteria for the 10-, 30-, 60-, and 100-percent levels for 
    arteriosclerotic heart disease using the same METs-based criteria we 
    have adopted for DC 7000 (valvular heart disease). We have also adopted 
    similar alternative criteria based either on chronic or multiple 
    episodes of congestive heart failure, left ventricular dysfunction with 
    decreased ejection fraction percentages, or cardiac hypertrophy or 
    dilatation.
        The prior rating schedule assigned 30-percent evaluations under DCs 
    7005 (arteriosclerotic heart disease) and 7006 (myocardium, infarction 
    of, due to thrombosis or embolism) ``following typical coronary 
    occlusion or thrombosis,'' or ``with history of substantiated anginal 
    attack, ordinary manual labor feasible,'' but provided neither a 10-
    percent level nor specific criteria for a zero-percent evaluation. We 
    proposed to assign a 30-percent evaluation for those with cardiac 
    symptoms appearing after strenuous physical activity, and to establish 
    a zero-percent level for those with no limitation of physical activity.
        Two commenters objected to the proposed changes. One suggested we 
    provide a 20-percent level under DC 7005 for some limitation of 
    activities and a 30-percent level for one or more symptoms. One felt 
    that 30 percent should be the minimum under DC 7005 or DC 7006 because 
    permanent disability results.
        In keeping with the objective evaluation criteria we are adopting, 
    it is feasible to establish additional levels of impairment based on an 
    objective measurement of the workload at which symptoms develop. We 
    have added a 10-percent evaluation under DC's 7005 and 7006 for those 
    who have cardiac symptoms at a workload greater than 7 METs but not 
    greater than 10 METs, which includes such activities as gardening and 
    skating. The 10-percent evaluation may also be assigned when continuous 
    medication is required, which is consistent with the evaluation of 
    other heart conditions. As a result, if, for different conditions, the 
    same workload elicits symptoms, the conditions will be assigned the 
    same evaluation. A 30-percent minimum evaluation is not warranted. 
    Arteriosclerotic heart disease may be mild enough that it imposes 
    little or no functional impairment, and, in our judgment, the most 
    equitable way to evaluate the condition is to do so objectively 
    according to the physical workload that causes symptoms.
        We proposed that arteriosclerotic heart disease (DC 7005) and 
    myocardial infarction (DC 7006) be evaluated under the same criteria. 
    That was reasonable under the subjective evaluation criteria that were 
    proposed, but there are some condition-specific differences that the 
    criteria must reflect. We have provided for a three-month convalescence 
    evaluation following a myocardial infarction (DC 7006), a condition of 
    sudden onset. Arteriosclerotic heart disease (DC 7005), on the other 
    hand, is a chronic condition that does not warrant a convalescence 
    evaluation. We have added a requirement to DC 7005 that the veteran 
    have ``documented'' coronary artery disease. Similarly, we have headed 
    DC 7006 with the statement ``with history of myocardial infarction, 
    documented by laboratory tests.'' This replaces the requirement that 
    the myocardial infarction be ``typical'' in order to assign the 
    convalescence evaluation. Since atypical myocardial infarctions may be 
    just as disabling as typical ones, we have revised the criteria for a 
    convalescence rating to require that an infarction be ``documented'' 
    rather than ``typical.''
        We have deleted the instruction proposed under DC 7005 that 
    cardiomyopathies (DC 7020) and hypertensive heart disease (DC 7007) are 
    to be rated as arteriosclerotic heart disease because we have provided 
    each of these conditions with criteria under its own diagnostic code.
        We proposed that hypertensive heart disease (DC 7007) be evaluated 
    under the criteria for arteriosclerotic heart disease, i.e., percentage 
    evaluations based on the level of activity that causes symptoms, and we 
    have revised the criteria using the same objective evaluation criteria 
    as for arteriosclerotic heart disease.
        We have made minor editorial changes under DC 7008 (hyperthyroid 
    heart disease).
        We proposed that a 30-percent evaluation under DC 7010 
    (supraventricular arrhythmias) require paroxysmal atrial fibrillation 
    or other supraventricular tachycardia, with severe frequent attacks 
    despite therapy, and that the 10-percent evaluation require permanent 
    atrial fibrillation or infrequent or mild attacks documented by 
    electrocardiogram (ECG) or Holter monitor.
        Two commenters pointed out that such phrases as ``severe, frequent 
    attacks'' are indefinite, and one suggested that we replace these terms 
    with more objective ones.
        We agree and have revised the criteria to require more than four 
    episodes a year of paroxysmal atrial fibrillation or other 
    supraventricular tachycardia for the 30-percent level, and permanent 
    atrial fibrillation or one to four episodes a year of paroxysmal atrial 
    fibrillation or other supraventricular tachycardia for the 10-percent 
    level. Both sets of criteria require documentation by ECG or Holter 
    monitor.
        We proposed to evaluate sustained ventricular arrhythmias (DC 7011) 
    according to whether ``ordinary'' or ``strenuous'' activity results in 
    palpitations or symptoms of arrhythmia. A commenter objected to the 
    subjectivity of the proposed criteria for DC 7011.
        Based on this comment, we have revised the criteria using the same 
    objective measurements that we are using for arteriosclerotic heart 
    disease. We have, however, retained specific provisions for a total 
    evaluation while an Automatic Implantable Cardioverter-Defibrillator 
    (AICD) is in place. The use of AICDs is associated with the potential 
    for serious complications such as myocardial infarction, stroke, 
    cardiogenic shock, and complications
    
    [[Page 65213]]
    
    associated with the thoracotomy required for its insertion (Braunwald, 
    750). We have revised the language slightly to make it clear that a 
    100-percent evaluation will be assigned for as long as the AICD is in 
    place. We have also made other nonsubstantive changes in the language 
    at 100 percent for the sake of clarity.
        The previous schedule provided a 100-percent evaluation for DC 
    7015, atrioventricular block, for one year following implantation of a 
    pacemaker when required by a complete heart block with attacks of 
    syncope, and a 60-percent evaluation for complete heart block with 
    Stokes-Adams attacks several times a year despite medication or a 
    pacemaker. We proposed to eliminate the 100-percent level while 
    retaining essentially the same criteria for the other levels.
        One commenter stated that a 100-percent evaluation is warranted 
    under DC 7015 when there is a complete heart block with syncopal 
    attacks despite therapy or a pacemaker. Another commenter suggested 
    that we replace the requirement for ``several'' attacks a year for the 
    60-percent evaluation under DC 7015 with a definite number.
        Upon further review, in response both to these comments and to the 
    requests for more objective criteria, we have revised the criteria for 
    DC 7015 by providing the same objective evaluation criteria we have 
    used for ventricular arrhythmias (DC 7011) and many other heart 
    conditions, since heart block may result in a variety of cardiac signs 
    and symptoms and a wide range of disabilities. This change restores the 
    100-percent evaluation level. These criteria replace evaluation 
    criteria based on the electrocardiographic designation of complete or 
    incomplete block. Because both complete and incomplete heart blocks can 
    differ in severity, basing evaluations on the degree of heart block 
    could lead to different evaluations for similar symptoms. In our 
    judgment, the revised criteria are a better measure of the disabling 
    effects of atrioventricular block than whether the block is complete or 
    incomplete.
        The only difference in the criteria for atrioventricular block (DC 
    7015) and ventricular arrhythmias (DC 7011) is that a 10-percent 
    evaluation for DC 7015 will be assigned when either a pacemaker, a 
    common method of treatment for this condition, or continuous medication 
    is required. We have deleted the proposed zero-percent evaluation, 
    since under the provisions of 38 CFR 4.31a, a zero-percent evaluation 
    may be assigned when the findings are less than those needed for a 
    compensable level. We have also edited the note requiring that certain 
    unusual cases of associated arrhythmias are to be submitted to the 
    Director of the Compensation and Pension Service for evaluation, for 
    the sake of clarity.
        The previous schedule established a minimum 30-percent evaluation 
    for heart valve replacement (DC 7016); we proposed a 30-percent 
    evaluation when strenuous activity causes specific cardiac symptoms, 
    and a zero-percent evaluation when the condition imposes no limitation 
    of physical activity. One commenter suggested that we retain the 30-
    percent minimum evaluation, but gave no rationale for the suggestion.
        The level of residual disability following valve replacement can 
    also be objectively determined based on the level of activity that 
    results in symptoms in the same manner as for valvular heart disease. 
    We have, therefore, revised the criteria to assign a 30-percent 
    evaluation when a workload of greater than 5 METs but not greater than 
    7 METs results in symptoms, or when there is evidence of cardiac 
    hypertrophy or dilatation. For the sake of consistency with the 
    evaluation criteria for other heart conditions evaluated based on the 
    level of physical activity that causes symptoms, we have added a ten-
    percent evaluation when a workload of greater than 7 METs but not 
    greater than 10 METs results in symptoms. In our judgment, specific 
    symptoms warrant the same evaluation whether they occur before or after 
    valve replacement, and we are not aware of any special circumstances 
    following valve replacement that would justify a 30-percent minimum 
    evaluation.
        We have edited the language of the note regarding the assignment of 
    100 percent following admission for heart valve replacement to assure 
    that the provisions of Sec. 3.105(e) will be followed whether the 
    reduction from the 100-percent evaluation is based upon the mandatory 
    examination six months following discharge or following a subsequent 
    examination.
        The previous schedule called for a total evaluation for one year 
    following heart valve replacement (DC 7016). We proposed a total 
    evaluation for an indefinite period, with a mandatory VA examination 
    six months after the surgery, with any change in evaluation based on 
    that or any subsequent examination to be made under the provisions of 
    38 CFR 3.105(e).
        One commenter objected to the proposed change, stating that heart 
    valve replacement is a high risk surgical procedure, and many patients 
    have post-operative congestive heart failure for a considerable time. 
    Another commenter said that the proposed reduction in length of the 
    convalescence evaluation is arbitrary, that it goes beyond the purpose 
    of the review, and that no justification has been provided.
        We recognize that it ordinarily takes patients longer to recover 
    from valve replacement than from acute valvular infection, 
    endocarditis, or pericarditis and, therefore, proposed an indefinite 
    period of total evaluation. We believe that six months following 
    discharge from the hospital is a reasonable time at which to examine a 
    patient to determine whether the condition has stabilized and the 
    extent of residual disability. If the results of that or any subsequent 
    examination warrant a reduction in evaluation, the reduction will be 
    implemented under the notice and effective date provisions of 38 CFR 
    3.105(e), which require a 60-day notice before VA reduces an evaluation 
    and an additional 60-day notice before the reduced evaluation takes 
    effect. By requiring an examination, the revised procedure will assure 
    that all residuals are documented; it also ensures that the veteran 
    receive timely notice of any proposed action and have an opportunity to 
    present evidence showing that the proposed action should not be taken. 
    In our judgment, this method will better ensure that actual residual 
    disabilities and recuperation times are taken into account because they 
    will be documented on examination.
        We proposed to change the length of the total evaluation following 
    coronary artery bypass surgery (DC 7017) from one year to three months. 
    One commenter objected, stating that unspecified medical textbooks 
    suggest resumption of sedentary activity over the two-to three-month 
    period following surgery, with resumption of full activity after three 
    months. Another expressed his belief that a reduction to three months 
    is unreasonably restrictive and does not reflect the average impairment 
    for those in poor health or those who have cardiomyopathies or 
    pulmonary and systemic organ congestion.
        An article in the Journal of the American College of Cardiology 
    (1029 vol. 14, no. 4, Oct. 1989) entitled ``Insurability and 
    Employability of the Patient with Ischemic Heart Disease'' states that 
    return to work evaluations are appropriate seven weeks after bypass 
    surgery. Neither this article nor the unidentified information cited by 
    the commenter justifies the need for a convalescence evaluation longer 
    than three months. For the individual who requires a longer than 
    average period of convalescence, a total evaluation may be assigned for 
    a longer period under the provisions of Secs. 4.29 and 4.30 of the
    
    [[Page 65214]]
    
    rating schedule. We have, therefore, retained the provision assigning a 
    total evaluation for three months following surgery as proposed.
        We proposed that coronary artery bypass surgery be evaluated using 
    the evaluation criteria for arteriosclerotic heart disease, which was 
    not a change from the previous schedule. One commenter suggested that 
    30 percent be the minimum evaluation following bypass surgery, 
    analogous to arteriosclerotic heart disease (DC 7005).
        We have provided objective criteria for evaluation following 
    coronary bypass surgery that are the same as the criteria we have 
    provided for arteriosclerotic heart disease (DC 7005). The surgery 
    itself does not necessarily produce a 30-percent level of impairment; 
    in fact, it often alleviates the disability from arteriosclerotic heart 
    disease. In our judgment, an evaluation based on the workload at which 
    symptoms develop is a reasonable and consistent way to assess the 
    extent of disability; a 30-percent evaluation will be assigned if 
    symptoms develop at the same workload that warrants a 30-percent 
    evaluation for other cardiac conditions.
        One commenter suggested that we add a convalescence evaluation 
    following balloon angioplasty for coronary artery disease.
        Most patients who undergo balloon angioplasty are discharged from 
    the hospital 24 hours or less after surgery, and many can return to 
    work in a week or less after a successful and uncomplicated angioplasty 
    (Hurst, 2145 and Braunwald, 1367). In our judgment, a total evaluation 
    for a specified period to allow for convalescence is, therefore, not 
    warranted.
        We proposed changing the duration of the total evaluation following 
    implantation of a cardiac pacemaker (currently Note (2) under DC 7015, 
    proposed as DC 7018) from one year to two months. One commenter said 
    that the total evaluation should continue for one year; another said 
    that pacemakers require close monitoring postoperatively and that 
    patients should not concern themselves with a return to activity sooner 
    than medically advisable.
        Pacemaker implantation is not major surgery, nor is it associated 
    with debilitating or long-term residuals. Those who undergo a cardiac 
    pacemaker implantation are usually discharged from the hospital the 
    following day and are seen in follow-up two weeks after surgery to 
    check the wound and to test the pacing system (Hurst, 2103-4). They are 
    subsequently evaluated two months after implantation, and virtually all 
    patients will have definitive pacemaker programming for long-term 
    function at that time (Braunwald, 747). Thereafter, there is periodic 
    monitoring, often conducted by telephone. In our judgment, a two-month 
    convalescence evaluation is adequate for a normal recovery from 
    pacemaker implantation.
        One commenter suggested that we add a 100-percent evaluation under 
    DC 7018, implantable cardiac pacemakers, for those patients who require 
    frequent follow-up and adjustment after pacemaker implant.
        DC 7018 allows evaluation of a patient's condition following 
    implantation of a pacemaker under supraventricular arrhythmias (DC 
    7010), ventricular arrhythmias (DC 7011), or atrioventricular block (DC 
    7015), if appropriate. A 100-percent evaluation may, therefore, be 
    assigned based either on symptoms or on the number of episodes of 
    arrhythmia, depending on the diagnostic code used. These criteria are a 
    better indicator of residual disability than the frequency of 
    adjustments or follow-up, and we have made no change based on this 
    suggestion.
        Another commenter felt that 30 percent should be the minimum 
    evaluation for DC 7018 after a pacemaker has been implanted.
        A pacemaker requires regular checkups and monitoring, often by 
    telephone, but the patient may, in fact, be asymptomatic. An evaluation 
    of 10 percent rather than 30 percent is more appropriate for such 
    cases, and we have added a minimum evaluation of 10 percent to the 
    criteria under DC 7018. This is comparable to the assignment of 10 
    percent for other cardiac conditions when continuous medication is 
    required.
        One commenter suggested that we add a caveat under pacemaker 
    implantation (DC 7018) that reimplantation or replacement of a 
    pacemaker does not warrant a 100-percent evaluation.
        The total evaluation for two months following implantation of a 
    pacemaker is to provide a period of recuperation from the surgery and 
    any possible side-effects, as well as to provide a period to adjust the 
    device itself and test the response of the individual's heart. These 
    considerations apply as well to the replacement of a pacemaker, and, in 
    our judgment, limiting convalescence evaluations to the initial 
    implantation only is not warranted.
        We proposed to add a new diagnostic code (DC 7019) for cardiac 
    transplantation allowing a total evaluation for an indefinite period 
    following the transplant, with a mandatory VA examination to be 
    conducted one year later. In the past, with no provision for cardiac 
    transplantation in the rating schedule, a fixed period of convalescence 
    evaluation for two years was assigned, analogous to what the rating 
    schedule provided following renal transplant prior to the revisions to 
    the genitourinary portion of the rating schedule published January 18, 
    1994.
        One commenter stated that the total evaluation following cardiac 
    transplantation (DC 7019) should continue for two years because the 
    risk of rejection and survival data show that this is dangerous 
    surgery.
        Because more than 85 percent of one-year survivors of a cardiac 
    transplant have been rehabilitated and return to work or to school by 
    the end of one year after transplant (Hurst, 2253-54), in our judgment, 
    one year following hospital discharge is a reasonable time to conduct 
    an examination in order to assess residual disability. As with other 
    indefinite periods of convalescence evaluation, any change in 
    evaluation based on the results of the examination will be implemented 
    under the notice and effective date provisions of Sec. 3.105(e), which 
    require VA to notify the claimant of any proposed reduction, once the 
    examination has been carried out and reviewed, and allows 60 days for 
    the claimant to provide additional evidence to show that a reduction 
    should not be carried out.
        We proposed to evaluate cardiac transplantation (DC 7019) under the 
    same criteria as arteriosclerotic heart disease (DC 7005), i.e., 
    according to the level of activity that causes symptoms; we have, 
    therefore, revised the criteria using the same objective measurements 
    that we have adopted for evaluating arteriosclerotic heart disease. We 
    proposed a minimum 30-percent evaluation following cardiac 
    transplantation as long as the veteran is on immunosuppressive 
    medication. Because almost every patient will permanently require 
    immunosuppressive therapy following cardiac transplantation, we have 
    simply made 30 percent the minimum evaluation and deleted the 
    requirement that the veteran be taking immunosuppressive medication. 
    This is consistent with the minimum evaluation for kidney transplant 
    (DC 7531), which was published in the Federal Register of January 18, 
    1994 (59 FR 2523).
        We also proposed to evaluate cardiomyopathy (DC 7020) under the 
    same criteria as arteriosclerotic heart disease (DC 7005), i.e., 
    according to the level of activity that causes symptoms;
    
    [[Page 65215]]
    
    we have, therefore, revised the criteria using the same objective 
    measurements that we have adopted for evaluating arteriosclerotic heart 
    disease.
        The previous schedule had a diagnostic code, DC 7100, for 
    generalized arteriosclerosis, which we proposed to delete. One 
    commenter objected, stating that this condition, which is often present 
    in geriatric cases, produces total industrial incapacity with 
    involutional changes such as cerebral ischemia with reduced mentation, 
    bone and muscle atrophy, etc.
        The effects of generalized arteriosclerosis are so widespread that, 
    in our judgment, a single diagnostic code is neither appropriate nor 
    necessary. Many diagnostic codes, such as DC 7005, arteriosclerotic 
    heart disease, DC 7114, arteriosclerosis obliterans, and DC 9305, 
    multi-infarct dementia associated with cerebral arteriosclerosis, 
    represent potential effects of arteriosclerosis on end organs, and 
    evaluating each disability resulting from generalized arteriosclerosis 
    under an appropriate code will result in more accurate assessments of 
    the actual disabilities caused by the condition. We have, therefore, 
    made no change based on this comment.
        Two commenters requested that we define the term hypertension (DC 
    7101).
        In response to this comment, we have revised Note (1) under DC 7101 
    to state that, for purposes of this section, hypertension means that 
    the diastolic blood pressure is predominantly 90mm. or greater, and 
    that isolated systolic hypertension means that the systolic blood 
    pressure is predominantly 160mm. or greater with a diastolic blood 
    pressure of less than 90mm. (Cecil, 253, based on the 1988 report of 
    the Joint National Committee on Detection, Evaluation, and Treatment of 
    High Blood Pressure).
        Since both essential hypertension and secondary types of 
    hypertension, such as isolated systolic hypertension due to 
    arteriosclerosis, may be evaluated under this diagnostic code, we have 
    revised the title of DC 7101 from Hypertensive vascular disease 
    (essential arterial hypertension) to Hypertensive vascular disease 
    (hypertension and isolated systolic hypertension).
        In the previous schedule, Note (1) under DC 7101 (hypertensive 
    vascular disease) stated that the 40- and 60-percent evaluations 
    required careful attention to diagnosis and repeated blood pressure 
    readings. We proposed to revise the note to state that careful and 
    repeated measurements of blood pressure readings are required prior to 
    the assignment of any compensable evaluation.
        Two commenters requested that we clarify the meaning of the note. 
    Standard medical texts recommend multiple blood pressure readings for 
    the diagnosis of hypertension, although the number of measurements 
    recommended varies, with ``at least three sets over at least a three-
    month interval'' (Braunwald, 818) and ``at least two measurements on 
    two separate examinations'' (Harrison, 1001) among the specific 
    recommendations. We have revised the note to require that hypertension 
    be confirmed by readings taken two or more times on each of at least 
    three different days. This will assure that the existence of 
    hypertension is not conceded based solely on readings taken on a 
    single, perhaps unrepresentative, day.
        In a note under DC 7101 (hypertensive vascular disease), the 
    previous schedule established a minimum evaluation of ten percent when 
    medication is necessary to control hypertension with a history of 
    diastolic blood pressure predominantly 100 or more. We proposed to keep 
    this note.
        One commenter asked if 10 percent should be assigned whenever 
    continuous medication is required for any disorder; another asked if 
    the assignment of 10 percent for hypertension should depend on the 
    amount of medication required.
        In our judgment, it would not be appropriate to assign a ten-
    percent evaluation for every condition which requires continuous 
    treatment by medication. Whether a ten-percent evaluation is warranted 
    when continuous medication is required is based on a case-by-case 
    assessment of each condition and the usual effects of treatment. As to 
    the second comment, the evaluation for hypertension is based not on the 
    amount of medication required to control it, but on the level of 
    control that can be achieved. While there may be more side effects with 
    higher levels of medication or with combined antihypertensive 
    medications, the disabling side effects of medication may be separately 
    evaluated under the provisions of 38 CFR 3.310(a).
        Since the provision concerning the assignment of a minimum ten-
    percent evaluation when there is a history of diastolic pressure 
    predominantly 100 or more and continuous medication is required 
    represents part of the evaluation criteria, we have included it in the 
    criteria for a ten-percent evaluation, rather than in a separate note, 
    as proposed.
        The previous schedule called for a 100-percent evaluation for 
    aortic aneurysm (DC 7110) when there are markedly disabling symptoms 
    and for one year following surgical correction. Because of a 
    typographical error, omission of a semicolon, the proposed criteria as 
    published implied that a total evaluation would be assigned following 
    surgery only if the aneurysm had been 5 cm. or more in diameter. One 
    commenter pointed out this error. We had intended to propose that 
    veterans be evaluated as totally disabled under either of two 
    circumstances: (1) If the aneurysm is 5 cm. or greater in diameter, or 
    (2) for six months following resection of an aneurysm of any size. We 
    have corrected the error in the final rule.
        In addition, to assure internal consistency, we have revised the 
    criteria to allow a 100-percent evaluation under DC 7110 in an 
    additional situation: when an aortic aneurysm is symptomatic. Under DC 
    7111, aneurysm of any large artery is evaluated at 100 percent if it is 
    symptomatic. Since the aorta is the largest artery in the body, it 
    would be inconsistent and inequitable not to allow the same evaluation 
    that the schedule provides for symptomatic aneurysms of other large 
    arteries.
        The previous schedule assigned a minimum 20-percent evaluation 
    following surgical correction of aortic aneurysm (DC 7110). We proposed 
    to evaluate residuals following surgical correction on actual residual 
    disability, according to the organ system affected, in lieu of 
    assigning a minimum evaluation. A commenter recommended that we retain 
    the 20-percent minimum evaluation following surgery, contending that 
    after such surgery individuals lead a tenuous and extremely sedentary 
    existence, often requiring revision of the graft.
        There is a wide range of possible complications and residual 
    disability following surgical correction of an aortic aneurysm, 
    depending on such factors as the location of the aneurysm, its type 
    (dissecting or not), etc. Because some would warrant a higher, and some 
    a lower, evaluation than 20 percent, in our judgment it is preferable 
    to evaluate the actual residuals rather than provide a minimum 
    evaluation, and we have made no change based on this comment.
        We proposed to eliminate the fixed one-year period of convalescence 
    evaluation following surgical correction of an aortic aneurysm (DC 
    7110) in favor of a 100-percent evaluation for an indefinite period 
    from the date of admission for surgical correction, with a mandatory VA 
    examination six months following discharge, and with any change in 
    evaluation subject to the notice and effective date provisions of
    
    [[Page 65216]]
    
    Sec. 3.105(e). One commenter urged that we retain the one-year 
    convalescence evaluation, but gave no specific reasons. We also 
    proposed an indefinite total evaluation following repair of an aneurysm 
    of a large artery (DC 7111) although the previous schedule had provided 
    no post-surgical total evaluation. One commenter suggested that a one-
    year period of convalescence evaluation would be appropriate following 
    repair of an aneurysm of a large artery because, as after aortic 
    aneurysm repair, these patients lead a tenuous and sedentary existence 
    after surgery.
        The period of total evaluation following surgery under DCs 7110 and 
    7111 will continue indefinitely under the revised schedule, and an 
    examination six months following the date of admission for surgical 
    correction will determine whether a change in evaluation is warranted, 
    based on actual residuals documented at that time. Since any change 
    will be implemented under the notice and effective date provisions of 
    Sec. 3.105 (e), the veteran will have the opportunity to present 
    medical evidence if he or she disagrees with the proposed change in 
    evaluation. These provisions assure an evaluation that reflects the 
    actual disability as documented by medical examination, and we have 
    made no change based on these comments.
        The previous schedule assigned a 10-percent evaluation for aneurysm 
    of any small artery (DC 7112); we proposed that such an aneurysm be 
    assigned a zero-percent evaluation. One commenter stated that the 
    proposed change is based on empirical, as opposed to statistical, 
    evidence and that evaluations that have stood the test of time should 
    not be routinely reduced or discontinued.
        Small artery aneurysms may produce symptoms such as headaches or 
    visual abnormalities due to local pressure effects, and an aneurysm 
    that ruptures may result in a wide variety of symptoms. However, small 
    artery aneurysms that are asymptomatic are found in about five percent 
    of the population (Cecil, 2165). Because of the wide range of possible 
    disabling effects, it is appropriate to rate each one on the actual 
    findings rather than provide a 10-percent evaluation in all cases. In 
    our judgment, an asymptomatic aneurysm of a small artery has no 
    disabling effects and does not warrant a compensable evaluation.
        Another commenter asked where and how to rate cerebral aneurysms. 
    Aneurysms of cerebral arteries are evaluated under DC 7112, as are all 
    other aneurysms of small arteries. We have made no change in response 
    to this comment.
        The previous schedule specified a minimum evaluation of 60 percent 
    for traumatic arteriovenous aneurysm (DC 7113) when there is cardiac 
    involvement, and we proposed no change. One commenter, noting that 
    designating a minimum evaluation implied that a higher one could be 
    assigned, asked what findings would warrant an evaluation higher than 
    60 percent, since 60 percent was also the highest evaluation under DC 
    7113.
        The most serious potential consequence of arteriovenous aneurysm is 
    congestive heart failure due to high output, which would warrant a 100-
    percent evaluation. We have, therefore, added a 100-percent evaluation, 
    to be assigned if there is high output heart failure.
        In response to the request for more objective criteria, we have 
    revised the criteria for a 60-percent evaluation under DC 7113 to 
    require an enlarged heart, wide pulse pressure, and tachycardia rather 
    than the ambiguous term ``cardiac involvement'' that we had proposed. 
    We have revised the criteria for the 50-percent level for lower 
    extremity involvement or the 40-percent level for upper extremity 
    involvement, which were proposed as ``without cardiac involvement with 
    marked vascular symptoms,'' to require edema, stasis dermatitis, and 
    either ulceration or cellulitis. We have revised the criteria for the 
    30-percent level for lower extremity involvement or the 20-percent 
    level for upper extremity involvement, which were proposed as ``with 
    definite vascular symptoms,'' to require edema or stasis dermatitis. 
    These are not substantive changes, but more specific designations of 
    the cardiac and vascular signs that warrant these evaluations. We have 
    also revised the title of DC 7113 from ``arteriovenous aneurysm, 
    traumatic'' to ``arteriovenous fistula, traumatic,'' the currently 
    accepted term for the condition, which is a direct communication 
    between an artery and a vein.
        One commenter requested that we add a paragraph under 
    arteriosclerosis obliterans (DC 7114) addressing the evaluation of 
    aorto-femoral bypass grafts.
        To assure consistent evaluations of the residuals of aortic and 
    large arterial bypass surgery, we have added a note under DC 7114 
    stating that the residuals of aortic and large arterial bypass surgery 
    or arterial grafts are to be rated under that code. Since the most 
    common residuals of bypass surgery are signs and symptoms of arterial 
    insufficiency, it is appropriate to evaluate them under the criteria 
    for arteriosclerosis obliterans.
        Two commenters suggested we provide a specific period of 
    convalescence evaluation following bypass surgery for aortoiliac and 
    femoral-popliteal artery disease.
        The evaluation criteria for serious complications that might result 
    from bypass surgery and, therefore, be service-connected under the 
    provisions of 38 CFR 3.310(a), such as myocardial infarction, have 
    their own periods of convalescence evaluation. For the milder 
    complications, or the uncomplicated cases, the standard periods of 
    convalescence evaluation authorized under Sec. 4.30 of this part are 
    adequate, and we have made no change based on these comments.
        The criterion for the 40-percent evaluation for arteriosclerosis 
    obliterans (DC 7114) in the previous schedule was ``well-established 
    cases with intermittent claudication or recurrent episodes of 
    superficial phlebitis;'' we proposed to revise this criterion to 
    ``well-established cases of intermittent claudication with associated 
    physical findings (hair loss, skin changes).'' We proposed for the 100-
    percent level: ``severe, with marked physical signs producing total 
    incapacity''; for the 60-percent level: ``claudication on minimal 
    walking (less than three miles per hour on a level grade) with 
    persistent coldness of the extremity''; and for the 20-percent level: 
    ``minimal circulatory impairment, with paresthesias, temperature 
    changes and occasional claudication.'' One commenter noted that the 
    phrase ``well-established cases'' is one of the vague, indefinite, and 
    arbitrary elements in the schedule.
        In response to both that comment and the requests for more 
    objective criteria, we have revised the criteria under this diagnostic 
    code: To specify at each evaluation level the distance that can be 
    covered before claudication occurs; and to base evaluations on 
    objective physical findings, such as peripheral pulses, trophic 
    changes, persistent coldness, and deep ischemic ulcers. We have also 
    added an objective alternative criterion, the ankle/brachial index, at 
    each level, and a note explaining that this index is obtained by 
    dividing the systolic blood pressure at the ankle by the systolic blood 
    pressure in the arm. The ratio is normally one or greater; but because 
    arterial occlusive disease obstructs the blood flow in the legs, the 
    ratio in patients with that condition is less than one. A ratio of less 
    than 0.5 is consistent with severe ischemia (Harrison, 1019). The 
    ankle/brachial index thus allows a noninvasive
    
    [[Page 65217]]
    
    objective assessment of the severity of peripheral vascular disease.
        We proposed to evaluate Raynaud's syndrome (DC 7117) as 100-
    percent, 60-percent, 40-percent, or 20-percent disabling, using 
    measures such as ``marked'' circulatory changes, ``multiple'' ulcerated 
    areas, ``frequent'' vasomotor disturbances, and ``occasional'' attacks 
    of blanching or flushing. One commenter suggested that we replace 
    subjective terms with more objective requirements.
        Simply replacing the indefinite words would not result in truly 
    objective criteria. We have, therefore, defined ``characteristic 
    attacks'' of Raynaud's disease for VA purposes as consisting of 
    sequential color changes of the digits lasting minutes to hours, 
    sometimes with pain and paresthesias, and precipitated by exposure to 
    cold or by emotional upsets. We have revised the evaluation criteria 
    based on the frequency of characteristic attacks, the number of digital 
    ulcers, and whether autoamputation in one or more digits has occurred. 
    While we proposed no change in the former 20-percent level, which 
    required ``occasional attacks of blanching or flushing,'' under the 
    more objective criteria we have provided both a 20- and a 10-percent 
    level, with 20-percent requiring characteristic attacks four to six 
    times a week, and 10-percent requiring characteristic attacks one to 
    three times a week. This will ensure more consistent evaluations in 
    milder cases of Raynaud's, where, in the former schedule, the 
    assignment of zero percent or 20 percent depended on an individual 
    rater's interpretation of ``occasional.''
        One commenter suggested that we include neurologic symptoms 
    associated with exposure to low or subfreezing temperatures under the 
    evaluation criteria for DC 7117.
        In response to this comment, we have included pain and 
    paresthesias, which are neurologic symptoms, among the possible 
    manifestations of the characteristic attacks of Raynaud's syndrome.
        We proposed to assign 40-percent, 20-percent, and zero-percent 
    evaluations for angioneurotic edema (DC 7118), based generally on the 
    frequency, severity, and duration of attacks. One commenter recommended 
    that we add a 10-percent evaluation; another recommended that we 
    replace language such as ``frequent'' and ``infrequent'' with more 
    definite terms.
        Angioneurotic edema is a condition that is ordinarily self-limited, 
    with attacks subsiding in one to seven days (Merck, 333), but at times 
    palliative treatment is used. There are also unusual types that are 
    more persistent and resistant to therapy. We have established more 
    objective criteria based on the typical duration of attacks, their 
    frequency, and on whether there is laryngeal involvement. We have added 
    a 10-percent evaluation, to be assigned if attacks without laryngeal 
    involvement occur two to four times a year. These criteria will foster 
    more consistent evaluations for angioneurotic edema, since different 
    raters will not be required to interpret subjective terms such as 
    ``mild,'' ``moderate,'' ``frequent,'' and ``infrequent.''
        One commenter suggested that when angioneurotic edema affects the 
    larynx even briefly, a 10-percent evaluation is warranted.
        In our judgment, angioneurotic edema affecting the larynx does 
    warrant separate consideration in the evaluation criteria because 
    laryngeal edema commonly causes respiratory distress due to airway 
    obstruction and requires emergency treatment. This situation is serious 
    enough that if it occurs once or twice a year, it warrants a 20-percent 
    evaluation; if it occurs more than twice a year, it warrants a 40-
    percent evaluation.
        A second commenter objected that the proposed changes to DC 7118 
    were based on empirical, as opposed to statistical, information.
        As noted under the response to comments about DC 7122, 38 U.S.C. 
    1155 gives the Secretary the authority to revise the rating schedule 
    periodically in accordance with experience. The revisions of these 
    criteria are based on the usual effects of the disease, which is 
    consistent with the basis of revisions throughout the current 
    comprehensive revision of the rating schedule. They are medically, 
    rather than statistically, based, and no statistical studies were done 
    in conjunction with the revision.
        Under the previous schedule, there were a variety of methods used 
    to evaluate vascular diseases affecting the extremities, particularly 
    when more than one extremity was affected. For example, the criteria 
    for thrombophlebitis (DC 7121) applied to a single extremity, and if 
    other extremities were affected, they were separately evaluated. For 
    varicose veins (DC 7120), the criteria for a 10-percent evaluation 
    applied to either unilateral or bilateral involvement; but at other 
    evaluation levels, different percentages were assigned for unilateral 
    and bilateral involvement, with no direction for evaluation if one 
    extremity were more severely affected than the other. The criteria for 
    intermittent claudication (DC 7116) applied to a single extremity; 
    determining the evaluation for multiple extremities required 
    application of a complex set of rules (contained in a note following DC 
    7117) that sometimes produced an evaluation for involvement of multiple 
    extremities no higher than that for involvement of a single extremity. 
    We proposed no substantive change in either the methods of evaluating 
    these conditions or in the percentage levels.
        One commenter questioned why the percentage evaluations and the 
    method of determining the evaluation when more than one extremity is 
    affected differ for arterial and venous diseases. He suggested that we 
    use 20-, 40,-and 60-percent levels for both peripheral arterial 
    diseases (DCs 7114 through 7117), and venous diseases (DCs 7120 and 
    7121) instead of the variety of levels proposed, and that we adopt a 
    uniform and simple method of determining evaluations when more than one 
    extremity is involved, such as adding ten percent for each additional 
    extremity involved.
        We proposed evaluations levels of 20, 40, 60, and 100 percent for 
    DCs 7114, 7115, and 7117, and we have kept those levels in this rule, 
    with the addition of a 10-percent level for DC 7117. (We removed DC 
    7116, ``intermittent claudication,'' which was in the previous 
    schedule, because it was a symptom of disease rather than a disease.) 
    In response to the comment, we have further revised DCs 7120 (varicose 
    veins) and 7121 (post-phlebitic syndrome of any etiology) to provide 
    percentage evaluation levels of 10, 20, 40, 60, and 100 percent. In 
    addition, we have revised the method of evaluating DCs 7114 
    (arteriosclerosis obliterans), 7115 (thromboangiitis obliterans), and 
    7120 (varicose veins) so that the criteria apply to a single extremity, 
    as the criteria for DC 7121 do. If the paired extremity is also 
    affected, the evaluation for each extremity will be separately 
    determined and combined using the combined ratings table (see 38 CFR 
    4.25) and the bilateral factor (see 38 CFR 4.26) when applicable. 
    Section 4.26 also provides instructions on applying the bilateral 
    factor when there is involvement of upper and lower extremities. While 
    we have made the percentage levels similar, the signs, symptoms, and 
    effects of venous and arterial diseases differ greatly and, therefore, 
    require different evaluation criteria.
        In order to adopt the more consistent method of separately 
    evaluating each extremity affected by vascular disease and to assure 
    that venous conditions with similar findings receive consistent 
    evaluations, further revisions of the evaluation criteria for varicose 
    veins
    
    [[Page 65218]]
    
    (DC 7120) and post-phlebitic syndrome of any etiology (DC 7121) were 
    required.
        Varicose veins are ordinarily asymptomatic or mildly symptomatic, 
    but may produce prolonged venous insufficiency and progress to 
    thrombophlebitis and postphlebitic syndrome. Signs of venous 
    insufficiency, such as edema, stasis pigmentation, ulceration, eczema, 
    and induration, and symptoms such as aching and fatigue, are the major 
    disabling effects of varicose veins. The size, location, extent, etc., 
    of varicose veins do not correlate with symptoms (Merck, 590), and we 
    have removed those criteria as factors in evaluation. The presence or 
    absence of impairment of the deep circulation is more an indicator of 
    the feasibility of surgical repair than of functional impairment, and 
    we have, therefore, removed references to the deep circulation from the 
    evaluation criteria. We have replaced these criteria with criteria 
    based on symptoms (such as aching and fatigue after prolonged standing 
    or walking) or objective physical findings (such as edema, stasis 
    pigmentation, eczema, or ulceration).
        The effects of chronic venous insufficiency are the same, whether 
    from varicosities, thrombophlebitis, or some other cause. The 
    postphlebitic syndrome may itself lead to the development of 
    varicosities because of chronic venous insufficiency (Cecil, 363-7). 
    Therefore, the possible manifestations and disabling effects of 
    varicose veins and postphlebitic syndrome are very similar, and we have 
    used the same criteria to evaluate both conditions, with evaluation 
    levels of 0, 10, 20, 40, 60, and 100 percent for involvement of a 
    single extremity, and the same method of evaluation for multiple 
    extremity involvement as that used in arterial vascular disease of the 
    extremities.
        We added under DC 7120: ``With the following findings attributed to 
    the effects of varicose veins,'' and under DC 7121: ``With the 
    following findings attributed to venous disease'' in order to assure 
    that the examiner has determined that the abnormal findings are 
    attributed to venous disease.
        One commenter suggested that we clarify how to assign bilateral 
    evaluations for frozen feet (DC 7122) and varicose veins (DC 7120) when 
    one extremity is more severely affected than the other.
        The changes described above that we have made in the evaluation 
    criteria, evaluation percentages, and method of determining an 
    evaluation for multiple extremity involvement will allow accurate and 
    consistent evaluations when more than one extremity is affected by 
    varicose veins, but to different degrees. We have made similar changes 
    in the method of evaluating cold injury, DC 7122, in order to assure 
    accurate and consistent evaluations when there is multiple extremity 
    involvement, and this is further discussed below.
        We proposed no change in the previous evaluation criteria for 
    frozen feet (DC 7122). One commenter suggested that we expand the 
    criteria to include cold injuries to the hands, face, and ears; another 
    suggested that higher ratings may be warranted for loss of use of 
    multiple fingers or one or both hands.
        We have revised the title of DC 7122 from ``frozen feet, residuals 
    of'' to ``cold injury, residuals of'' to indicate that it may be used 
    to evaluate any cold injury. Because cold injury produces similar 
    tissue changes wherever it occurs, a single diagnostic code and set of 
    evaluation criteria are adequate; we have, however, revised the 
    criteria to more accurately reflect the range of effects that cold 
    injury may produce, such as arthralgia, tissue loss, nail 
    abnormalities, and color changes. We have also deleted the bilateral 
    evaluations contained in the prior schedule in favor of evaluating each 
    affected part separately and combining them for the overall evaluation 
    for cold injury, a change which is similar to changes we have made in 
    the method of evaluating peripheral arterial and venous diseases of the 
    extremities. In the case of paired extremities, the evaluations will be 
    combined, if appropriate, in accordance with Secs. 4.25 and 4.26 (as 
    described in Note (2), added following DC 7122).
        The proposed note following DC 7122 directed that higher ratings 
    could be assigned, if warranted, because of loss of toes, by reference 
    to amputation ratings. We have edited this Note (1) for clarity and 
    added a statement about the evaluation of complications such as 
    peripheral neuropathy or squamous cell carcinoma of the skin at the 
    site of a scar.
        One commenter requested that we include neurologic symptoms 
    associated with exposure to low or subfreezing temperatures in the 
    evaluation criteria for DC 7122, cold injuries.
        In response to this suggestion, we have added numbness or locally 
    impaired sensation, which are neurologic symptoms, to the evaluation 
    criteria.
        One individual suggested that cold injuries of the hands are 
    generally more disabling than those of the lower extremities.
        The severity of cold injuries to various parts of the body depends 
    on such factors as the extent and duration of exposure, more than on 
    the particular part affected. We have provided evaluation criteria 
    that, applied with the notes regarding amputations and complications, 
    are flexible enough to cover a broad range of severity and allow 
    evaluation of any extent of tissue damage from cold injury to any body 
    part, so we have not adopted any changes based on this comment.
        The current schedule provides six months of convalescence 
    evaluation for soft tissue sarcoma of vascular origin (DC 7123). We 
    proposed that a total evaluation be assigned indefinitely, with a 
    mandatory VA examination to be conducted six months following the 
    completion of therapy. One commenter recommended that we allow one year 
    of convalescence evaluation.
        We believe that an examination six months following the cessation 
    of treatment affords sufficient time for convalescence and 
    stabilization of residuals, particularly since the rule requires only 
    an examination, not a reduction, at that time. In our judgment, this 
    method of determining the length of the total evaluation is both fairer 
    and more accurate than assigning a total evaluation for a specified 
    length of time, since the evaluation will be based on actual residual 
    disability as documented by the examination, and the veteran will 
    receive advance notice of any change and have the opportunity to submit 
    additional evidence showing that the change is not warranted.
        Two commenters requested that VA provide a zero-percent evaluation 
    for all diagnostic codes.
        On October 6, 1993, VA revised its regulation addressing the issue 
    zero-percent evaluations (38 CFR 4.31) to authorize assignment of a 
    zero-percent evaluation for any disability in the rating schedule when 
    minimum requirements for a compensable evaluation are not met. In 
    general, that regulatory provision precludes the need for zero-percent 
    evaluation criteria.
        On further review, we have revised the title of DC 7121 from 
    ``phlebitis or thrombophlebitis'' to ``post-phlebitic syndrome of any 
    etiology'' because both superficial and deep acute thrombophlebitis are 
    transient conditions, but it is the chronic form of thrombophlebitis 
    with venous insufficiency, known as ``postphlebitic leg,'' 
    ``postphlebitic sequelae of chronic venous insufficiency,'' 
    ``postphlebitic syndrome,'' or ``stasis syndrome,'' that may follow 
    thrombophlebitis. This is not a substantive change.
    
    [[Page 65219]]
    
        For the sake of clarity, we have made nonsubstantive changes in the 
    notes under ventricular arrhythmias (DC 7011), heart valve replacement 
    (DC 7016), cardiac transplantation (DC 7019), aortic aneurysm (DC 
    7110), aneurysm, any large artery (DC 7111), and soft tissue sarcoma 
    (DC 7123).
        VA appreciates the comments submitted in response to the proposed 
    rule, which is now adopted with the amendments noted above.
        The Secretary hereby certifies that this regulatory amendment will 
    not have a significant economic impact on a substantial number of small 
    entities as they are defined in the Regulatory Flexibility Act (RFA), 5 
    U.S.C. 601-612. The reason for this certification is that this 
    amendment would not directly affect any small entities. Only VA 
    beneficiaries could be directly affected. Therefore, pursuant to 5 
    U.S.C. 605(b), this amendment is exempt from the initial and final 
    regulatory flexibility analysis requirements of sections 603 and 604.
        This regulatory amendment has been reviewed by the Office of 
    Management and Budget under the provisions of Executive Order 12866, 
    Regulatory Planning and Review, dated September 30, 1993.
    
    The Catalog of Federal Domestic Assistance program numbers are 
    64.104 and 64.109.
    
    List of Subjects in 38 CFR Part 4
    
        Disability benefits, Individuals with disabilities, Pensions, 
    Veterans.
    
        Approved: August 7, 1997.
    Hershel W. Gober,
    Acting Secretary of Veterans Affairs.
    
        For the reasons set out in the preamble, 38 CFR part 4, subpart B, 
    is amended as set forth below:
    
    PART 4--SCHEDULE FOR RATING DISABILITIES
    
        1. The authority citation for part 4 continues to read as follows:
    
        Authority: 38 U.S.C. 1155, unless otherwise noted.
    
    Subpart B--Disability Ratings
    
    
    Secs. 4.100 through 4.102  [Removed and Reserved]
    
        2. Sections 4.100, 4.101, 4.102 are removed and reserved.
        3. Section 4.104 is revised to read as follows:
    
    
    Sec. 4.104  Schedule of ratings--cardiovascular system.
    
    Diseases of the Heart
    
    Note (1): Evaluate cor pulmonale, which is a form of secondary heart 
    disease, as part of the pulmonary condition that causes it.
    Note (2): One MET (metabolic equivalent) is the energy cost of 
    standing quietly at rest and represents an oxygen uptake of 3.5 
    milliliters per kilogram of body weight per minute. When the level 
    of METs at which dyspnea, fatigue, angina, dizziness, or syncope 
    develops is required for evaluation, and a laboratory determination 
    of METs by exercise testing cannot be done for medical reasons, an 
    estimation by a medical examiner of the level of activity (expressed 
    in METs and supported by specific examples, such as slow stair 
    climbing or shoveling snow) that results in dyspnea, fatigue, 
    angina, dizziness, or syncope may be used.
    
    ------------------------------------------------------------------------
                                                                    Rating  
    ------------------------------------------------------------------------
    7000  Valvular heart disease (including rheumatic heart                 
     disease):                                                              
        During active infection with valvular heart damage and              
         for three months following cessation of therapy for                
         the active infection..................................          100
        Thereafter, with valvular heart disease (documented by              
         findings on physical examination and either                        
         echocardiogram, Doppler echocardiogram, or cardiac                 
         catheterization) resulting in:                                     
        Chronic congestive heart failure, or; workload of 3                 
         METs or less results in dyspnea, fatigue, angina,                  
         dizziness, or syncope, or; left ventricular                        
         dysfunction with an ejection fraction of less than 30              
         percent...............................................          100
        More than one episode of acute congestive heart failure             
         in the past year, or; workload of greater than 3 METs              
         but not greater than 5 METs results in dyspnea,                    
         fatigue, angina, dizziness, or syncope, or; left                   
         ventricular dysfunction with an ejection fraction of               
         30 to 50 percent......................................           60
        Workload of greater than 5 METs but not greater than 7              
         METs results in dyspnea, fatigue, angina, dizziness,               
         or syncope, or; evidence of cardiac hypertrophy or                 
         dilatation on electro-cardiogram, echocardiogram, or X-            
         ray...................................................           30
        Workload of greater than 7 METs but not greater than 10             
         METs results in dyspnea, fatigue, angina, dizziness,               
         or syncope, or; continuous medication required........           10
    7001  Endocarditis:                                                     
        For three months following cessation of therapy for                 
         active infection with cardiac involvement.............          100
        Thereafter, with endocarditis (documented by findings               
         on physical examination and either echocardiogram,                 
         Doppler echocardiogram, or cardiac catheterization)                
         resulting in:                                                      
        Chronic congestive heart failure, or; workload of 3                 
         METs or less results in dyspnea, fatigue, angina,                  
         dizziness, or syncope, or; left ventricular                        
         dysfunction with an ejection fraction of less than 30              
         percent...............................................          100
        More than one episode of acute congestive heart failure             
         in the past year, or; workload of greater than 3 METs              
         but not greater than 5 METs results in dyspnea,                    
         fatigue, angina, dizziness, or syncope, or; left                   
         ventricular dysfunction with an ejection fraction of               
         30 to 50 percent......................................           60
        Workload of greater than 5 METs but not greater than 7              
         METs results in dyspnea, fatigue, angina, dizziness,               
         or syncope, or; evidence of cardiac hypertrophy or                 
         dilatation on electrocardiogram, echocardiogram, or X-             
         ray...................................................           30
        Workload of greater than 7 METs but not greater than 10             
         METs results in dyspnea, fatigue, angina, dizziness,               
         or syncope, or; continuous medication required........           10
    7002  Pericarditis:                                                     
        For three months following cessation of therapy for                 
         active infection with cardiac involvement.............          100
        Thereafter, with documented pericarditis resulting in:              
        Chronic congestive heart failure, or; workload of 3                 
         METs or less results in dyspnea, fatigue, angina,                  
         dizziness, or syncope, or; left ventricular                        
         dysfunction with an ejection fraction of less than 30              
         percent...............................................          100
        More than one episode of acute congestive heart failure             
         in the past year, or; workload of greater than 3 METs              
         but not greater than 5 METs results in dyspnea,                    
         fatigue, angina, dizziness, or syncope, or; left                   
         ventricular dysfunction with an ejection fraction of               
         30 to 50 percent......................................           60
        Workload of greater than 5 METs but not greater than 7              
         METs results in dyspnea, fatigue, angina, dizziness,               
         or syncope, or; evidence of cardiac hypertrophy or                 
         dilatation on electro-cardiogram, echocardiogram, or X-            
         ray...................................................           30
        Workload of greater than 7 METs but not greater than 10             
         METs results in dyspnea, fatigue, angina, dizziness,               
         or syncope, or; continuous medication required........           10
    
    [[Page 65220]]
    
                                                                            
    7003  Pericardial adhesions:                                            
        Chronic congestive heart failure, or; workload of 3                 
         METs or less results in dyspnea, fatigue, angina,                  
         dizziness, or syncope, or; left ventricular                        
         dysfunction with an ejection fraction of less than 30              
         percent...............................................          100
        More than one episode of acute congestive heart failure             
         in the past year, or; workload of greater than 3 METs              
         but not greater than 5 METs results in dyspnea,                    
         fatigue, angina, dizziness, or syncope, or; left                   
         ventricular dysfunction with an ejection fraction of               
         30 to 50 percent......................................           60
        Workload of greater than 5 METs but not greater than 7              
         METs results in dyspnea, fatigue, angina, dizziness,               
         or syncope, or; evidence of cardiac hypertrophy or                 
         dilatation on electro-cardiogram, echocardiogram, or X-            
         ray...................................................           30
        Workload of greater than 7 METs but not greater than 10             
         METs results in dyspnea, fatigue, angina, dizziness,               
         or syncope, or; continuous medication required........           10
    7004  Syphilitic heart disease:                                         
        Chronic congestive heart failure, or; workload of 3                 
         METs or less results in dyspnea, fatigue, angina,                  
         dizziness, or syncope, or; left ventricular                        
         dysfunction with an ejection fraction of less than 30              
         percent...............................................          100
        More than one episode of acute congestive heart failure             
         in the past year, or; workload of greater than 3 METs              
         but not greater than 5 METs results in dyspnea,                    
         fatigue, angina, dizziness, or syncope, or; left                   
         ventricular dysfunction with an ejection fraction of               
         30 to 50 percent......................................           60
        Workload of greater than 5 METs but not greater than 7              
         METs results in dyspnea, fatigue, angina, dizziness,               
         or syncope, or; evidence of cardiac hypertrophy or                 
         dilatation on electrocardiogram, echocardiogram, or X-             
         ray...................................................           30
        Workload of greater than 7 METs but not greater than 10             
         METs results in dyspnea, fatigue, angina, dizziness,               
         or syncope, or; continuous medication required........           10
                                                                            
    Note: Evaluate syphilitic aortic aneurysms under DC 7110                
     (aortic aneurysm).                                                     
                                                                            
    7005  Arteriosclerotic heart disease (Coronary artery                   
     disease):                                                              
        With documented coronary artery disease resulting in:               
        Chronic congestive heart failure, or; workload of 3                 
         METs or less results in dyspnea, fatigue, angina,                  
         dizziness, or syncope, or; left ventricular                        
         dysfunction with an ejection fraction of less than 30              
         percent...............................................          100
        More than one episode of acute congestive heart failure             
         in the past year, or; workload of greater than 3 METs              
         but not greater than 5 METs results in dyspnea,                    
         fatigue, angina, dizziness, or syncope, or; left                   
         ventricular dysfunction with an ejection fraction of               
         30 to 50 percent......................................           60
        Workload of greater than 5 METs but not greater than 7              
         METs results in dyspnea, fatigue, angina, dizziness,               
         or syncope, or; evidence of cardiac hypertrophy or                 
         dilatation on electrocardiogram, echocardiogram, or X-             
         ray...................................................           30
        Workload of greater than 7 METs but not greater than 10             
         METs results in dyspnea, fatigue, angina, dizziness,               
         or syncope, or; continuous medication required........           10
                                                                            
    Note: If nonservice-connected arteriosclerotic heart                    
     disease is superimposed on service-connected valvular or               
     other non-arteriosclerotic heart disease, request a                    
     medical opinion as to which condition is causing the                   
     current signs and symptoms.                                            
                                                                            
    7006  Myocardial infarction:                                            
        During and for three months following myocardial                    
         infarction, documented by laboratory tests............          100
        Thereafter:                                                         
                                                                            
        With history of documented myocardial infarction,                   
         resulting in:                                                      
        Chronic congestive heart failure, or; workload of 3                 
         METs or less results in dyspnea, fatigue, angina,                  
         dizziness, or syncope, or; left ventricular                        
         dysfunction with an ejection fraction of less than 30              
         percent...............................................          100
        More than one episode of acute congestive heart failure             
         in the past year, or; workload of greater than 3 METs              
         but not greater than 5 METs results in dyspnea,                    
         fatigue, angina, dizziness, or syncope, or; left                   
         ventricular dysfunction with an ejection fraction of               
         30 to 50 percent......................................           60
        Workload of greater than 5 METs but not greater than 7              
         METs results in dyspnea, fatigue, angina, dizziness,               
         or syncope, or; evidence of cardiac hypertrophy or                 
         dilatation on electrocardiogram, echocardiogram, or X-             
         ray...................................................           30
        Workload of greater than 7 METs but not greater than 10             
         METs results in dyspnea, fatigue, angina, dizziness,               
         or syncope, or; continuous medication required........           10
    7007  Hypertensive heart disease:                                       
        Chronic congestive heart failure, or; workload of 3                 
         METs or less results in dyspnea, fatigue, angina,                  
         dizziness, or syncope, or; left ventricular                        
         dysfunction with an ejection fraction of less than 30              
         percent...............................................          100
        More than one episode of acute congestive heart failure             
         in the past year, or; workload of greater than 3 METs              
         but not greater than 5 METs results in dyspnea,                    
         fatigue, angina, dizziness, or syncope, or; left                   
         ventricular dysfunction with an ejection fraction of               
         30 to 50 percent......................................           60
        Workload of greater than 5 METs but not greater than 7              
         METs results in dyspnea, fatigue, angina, dizziness,               
         or syncope, or; evidence of cardiac hypertrophy or                 
         dilatation on electrocardiogram, echocardiogram, or X-             
         ray...................................................           30
        Workload of greater than 7 METs but not greater than 10             
         METs results in dyspnea, fatigue, angina, dizziness,               
         or syncope, or; continuous medication required........           10
    7008  Hyperthyroid heart disease:                                       
        Include as part of the overall evaluation for                       
         hyperthyroidism under DC 7900. However, when atrial                
         fibrillation is present, hyperthyroidism may be                    
         evaluated either under DC 7900 or under DC 7010                    
         (supraventricular arrhythmia), whichever results in a              
         higher evaluation.                                                 
    7010  Supraventricular arrhythmias:                                     
        Paroxysmal atrial fibrillation or other                             
         supraventricular tachycardia, with more than four                  
         episodes per year documented by ECG or Holter monitor.           30
        Permanent atrial fibrillation (lone atrial                          
         fibrillation), or; one to four episodes per year of                
         paroxysmal atrial fibrillation or other                            
         supraventricular tachycardia documented by ECG or                  
         Holter monitor........................................           10
    7011  Ventricular arrhythmias (sustained):                              
        For indefinite period from date of hospital admission               
         for initial evaluation and medical therapy for a                   
         sustained ventricular arrhythmia, or; for indefinite               
         period from date of hospital admission for ventricular             
         aneurysmectomy, or; with an automatic implantable                  
         Cardioverter-Defibrillator (AICD) in place............          100
        Chronic congestive heart failure, or; workload of 3                 
         METs or less results in dyspnea, fatigue, angina,                  
         dizziness, or syncope, or; left ventricular                        
         dysfunction with an ejection fraction of less than 30              
         percent...............................................          100
    
    [[Page 65221]]
    
                                                                            
        More than one episode of acute congestive heart failure             
         in the past year, or; workload of greater than 3 METs              
         but not greater than 5 METs results in dyspnea,                    
         fatigue, angina, dizziness, or syncope, or; left                   
         ventricular dysfunction with an ejection fraction of               
         30 to 50 percent......................................           60
        Workload of greater than 5 METs but not greater than 7              
         METs results in dyspnea, fatigue, angina, dizziness,               
         or syncope, or; evidence of cardiac hypertrophy or                 
         dilatation on electrocardiogram, echocardiogram, or X-             
         ray...................................................           30
        Workload of greater than 7 METs but not greater than 10             
         METs results in dyspnea, fatigue, angina, dizziness,               
         or syncope, or; continuous medication required........           10
                                                                            
      Note: A rating of 100 percent shall be assigned from the              
       date of hospital admission for initial evaluation and                
     medical therapy for a sustained ventricular arrhythmia or              
        for ventricular aneurysmectomy. Six months following                
       discharge, the appropriate disability rating shall be                
       determined by mandatory VA examination. Any change in                
      evaluation based upon that or any subsequent examination              
      shall be subject to the provisions of Sec.  3.105(e) of               
                           this chapter.                                    
                                                                            
    7015  Atrioventricular block:                                           
        Chronic congestive heart failure, or; workload of 3                 
         METs or less results in dyspnea, fatigue, angina,                  
         dizziness, or syncope, or; left ventricular                        
         dysfunction with an ejection fraction of less than 30              
         percent...............................................          100
        More than one episode of acute congestive heart failure             
         in the past year, or; workload of greater than 3 METs              
         but not greater than 5 METs results in dyspnea,                    
         fatigue, angina, dizziness, or syncope, or; left                   
         ventricular dysfunction with an ejection fraction of               
         30 to 50 percent......................................           60
        Workload of greater than 5 METs but not greater than 7              
         METs results in dyspnea, fatigue, angina, dizziness,               
         or syncope, or; evidence of cardiac hypertrophy or                 
         dilatation on electrocardiogram, echocardiogram, or X-             
         ray...................................................           30
        Workload of greater than 7 METs but not greater than 10             
         METs results in dyspnea, fatigue, angina, dizziness,               
         or syncope, or; continuous medication or a pacemaker               
         required..............................................           10
                                                                            
    Note: Unusual cases of arrhythmia such as atrioventricular              
     block associated with a supraventricular arrhythmia or                 
     pathological bradycardia should be submitted to the                    
     Director, Compensation and Pension Service. Simple delayed             
     P-R conduction time, in the absence of other evidence of               
     cardiac disease, is not a disability.                                  
                                                                            
    7016  Heart valve replacement (prosthesis):                             
        For indefinite period following date of hospital                    
         admission for valve replacement.......................          100
        Thereafter:                                                         
        Chronic congestive heart failure, or; workload of 3                 
         METs or less results in dyspnea, fatigue, angina,                  
         dizziness, or syncope, or; left ventricular                        
         dysfunction with an ejection fraction of less than 30              
         percent...............................................          100
        More than one episode of acute congestive heart failure             
         in the past year, or; workload of greater than 3 METs              
         but not greater than 5 METs results in dyspnea,                    
         fatigue, angina, dizziness, or syncope, or; left                   
         ventricular dysfunction with an ejection fraction of               
         30 to 50 percent......................................           60
        Workload of greater than 5 METs but not greater than 7              
         METs results in dyspnea, fatigue, angina, dizziness,               
         or syncope, or; evidence of cardiac hypertrophy or                 
         dilatation on electrocardiogram, echocardiogram, or X-             
         ray...................................................           30
        Workload of greater than 7 METs but not greater than 10             
         METs results in dyspnea, fatigue, angina, dizziness,               
         or syncope, or; continuous medication required........           10
                                                                            
    Note: A rating of 100 percent shall be assigned as of the               
     date of hospital admission for valve replacement. Six                  
     months following discharge, the appropriate disability                 
     rating shall be determined by mandatory VA examination.                
     Any change in evaluation based upon that or any subsequent             
     examination shall be subject to the provisions of Sec.                 
     3.105(e) of this chapter.                                              
                                                                            
    7017  Coronary bypass surgery:                                          
        For three months following hospital admission for                   
         surgery...............................................          100
        Thereafter:                                                         
        Chronic congestive heart failure, or; workload of 3                 
         METs or less results in dyspnea, fatigue, angina,                  
         dizziness, or syncope, or; left ventricular                        
         dysfunction with an ejection fraction of less than 30              
         percent...............................................          100
        More than one episode of acute congestive heart failure             
         in the past year, or; workload of greater than 3 METs              
         but not greater than 5 METs results in dyspnea,                    
         fatigue, angina, dizziness, or syncope, or; left                   
         ventricular dysfunction with an ejection fraction of               
         30 to 50 percent......................................           60
        Workload of greater than 5 METs but not greater than 7              
         METs results in dyspnea, fatigue, angina, dizziness,               
         or syncope, or; evidence of cardiac hypertrophy or                 
         dilatation on electrocardiogram, echocardiogram, or X-             
         ray...................................................           30
        Workload greater than 7 METs but not greater than 10                
         METs results in dyspnea, fatigue, angina, dizziness,               
         or syncope, or; continuous medication required........           10
    7018  Implantable cardiac pacemakers:                                   
        For two months following hospital admission for                     
         implantation or reimplantation........................          100
        Thereafter:                                                         
        Evaluate as supraventricular arrhythmias (DC 7010),                 
         ventricular arrhythmias (DC 7011), or atrioventricular             
         block (DC 7015). Minimum..............................           10
                                                                            
    Note: Evaluate implantable Cardioverter-Defibrillators                  
     (AICD's) under DC 7011.                                                
                                                                            
    7019  Cardiac transplantation:                                          
        For an indefinite period from date of hospital                      
         admission for cardiac transplantation.................          100
        Thereafter:                                                         
        Chronic congestive heart failure, or; workload of 3                 
         METs or less results in dyspnea, fatigue, angina,                  
         dizziness, or syncope, or; left ventricular                        
         dysfunction with an ejection fraction of less than 30              
         percent...............................................          100
        More than one episode of acute congestive heart failure             
         in the past year, or; workload of greater than 3 METs              
         but not greater than 5 METs results in dyspnea,                    
         fatigue, angina, dizziness, or syncope, or; left                   
         ventricular dysfunction with an ejection fraction of               
         30 to 50 percent......................................           60
            Minimum............................................           30
                                                                            
    Note: A rating of 100 percent shall be assigned as of the               
     date of hospital admission for cardiac transplantation.                
     One year following discharge, the appropriate disability               
     rating shall be determined by mandatory VA examination.                
     Any change in evaluation based upon that or any subsequent             
     examination shall be subject to the provisions of Sec.                 
     3.105(e) of this chapter.                                              
                                                                            
    7020  Cardiomyopathy:                                                   
    
    [[Page 65222]]
    
                                                                            
        Chronic congestive heart failure, or; workload of 3                 
         METs or less results in dyspnea, fatigue, angina,                  
         dizziness, or syncope, or; left ventricular                        
         dysfunction with an ejection fraction of less than 30              
         percent...............................................          100
        More than one episode of acute congestive heart failure             
         in the past year, or; workload of greater than 3 METs              
         but not greater than 5 METs results in dyspnea,                    
         fatigue, angina, dizziness, or syncope, or; left                   
         ventricular dysfunction with an ejection fraction of               
         30 to 50 percent......................................           60
        Workload of greater than 5 METs but not greater than 7              
         METs results in dyspnea, fatigue, angina, dizziness,               
         or syncope, or; evidence of cardiac hypertrophy or                 
         dilatation on electrocardiogram, echocardiogram, or X-             
         ray...................................................           30
        Workload of greater than 7 METs but not greater than 10             
         METs results in dyspnea, fatigue, angina, dizziness,               
         or syncope, or; continuous medication required........           10
    Diseases of the Arteries and Veins                                      
    7101  Hypertensive vascular disease (hypertension and                   
     isolated systolic hypertension):                                       
        Diastolic pressure predominantly 130 or more...........           60
        Diastolic pressure predominantly 120 or more...........           40
        Diastolic pressure predominantly 110 or more, or;                   
         systolic pressure predominantly 200 or more...........           20
        Diastolic pressure predominantly 100 or more, or;                   
         systolic pressure predominantly 160 or more, or;                   
         minimum evaluation for an individual with a history of             
         diastolic pressure predominantly 100 or more who                   
         requires continuous medication for control............           10
                                                                            
    Note (1): Hypertension or isolated systolic hypertension                
     must be confirmed by readings taken two or more times on               
     at least three different days. For purposes of this                    
     section, the term hypertension means that the diastolic                
     blood pressure is predominantly 90mm. or greater, and                  
     isolated systolic hypertension means that the systolic                 
     blood pressure is predominantly 160mm. or greater with a               
     diastolic blood pressure of less than 90mm.                            
    Note (2): Evaluate hypertension due to aortic insufficiency             
     or hyperthyroidism, which is usually the isolated systolic             
     type, as part of the condition causing it rather than by a             
     separate evaluation.                                                   
                                                                            
    7110  Aortic aneurysm:                                                  
        If five centimeters or larger in diameter, or; if                   
         symptomatic, or; for indefinite period from date of                
         hospital admission for surgical correction (including              
         any type of graft insertion)..........................          100
        Precluding exertion....................................           60
        Evaluate residuals of surgical correction according to              
         organ systems affected.                                            
                                                                            
    Note: A rating of 100 percent shall be assigned as of the               
     date of admission for surgical correction. Six months                  
     following discharge, the appropriate disability rating                 
     shall be determined by mandatory VA examination. Any                   
     change in evaluation based upon that or any subsequent                 
     examination shall be subject to the provisions of Sec.                 
     3.105(e) of this chapter.                                              
                                                                            
    7111  Aneurysm, any large artery:                                       
        If symptomatic, or; for indefinite period from date of              
         hospital admission for surgical correction............          100
        Following surgery:                                                  
        Ischemic limb pain at rest, and; either deep ischemic               
         ulcers or ankle/brachial index of 0.4 or less.........          100
        Claudication on walking less than 25 yards on a level               
         grade at 2 miles per hour, and; persistent coldness of             
         the extremity, one or more deep ischemic ulcers, or                
         ankle/brachial index of 0.5 or less...................           60
        Claudication on walking between 25 and 100 yards on a               
         level grade at 2 miles per hour, and; trophic changes              
         (thin skin, absence of hair, dystrophic nails) or                  
         ankle/brachial index of 0.7 or less...................           40
        Claudication on walking more than 100 yards, and;                   
         diminished peripheral pulses or ankle/brachial index               
         of 0.9 or less........................................           20
    Note (1): The ankle/brachial index is the ratio of the                  
     systolic blood pressure at the ankle (determined by                    
     Doppler study) divided by the simultaneous brachial artery             
     systolic blood pressure. The normal index is 1.0 or                    
     greater.                                                               
    Note (2): These evaluations are for involvement of a single             
     extremity. If more than one extremity is affected,                     
     evaluate each extremity separately and combine (under Sec.             
      4.25), using the bilateral factor, if applicable.                     
    Note (3): A rating of 100 percent shall be assigned as of               
     the date of hospital admission for surgical correction.                
     Six months following discharge, the appropriate disability             
     rating shall be determined by mandatory VA examination.                
     Any change in evaluation based upon that or any subsequent             
     examination shall be subject to the provisions of Sec.                 
     3.105(e) of this chapter.                                              
                                                                            
    7112  Aneurysm, any small artery:                                       
        Asymptomatic...........................................            0
                                                                            
    Note: If symptomatic, evaluate according to body system                 
     affected. Following surgery, evaluate residuals under the              
     body system affected.                                                  
                                                                            
    7113  Arteriovenous fistula, traumatic:                                 
        With high output heart failure.........................          100
        Without heart failure but with enlarged heart, wide                 
         pulse pressure, and tachycardia.......................           60
        Without cardiac involvement but with edema, stasis                  
         dermatitis, and either ulceration or cellulitis:                   
            Lower extremity....................................           50
            Upper extremity....................................           40
        With edema or stasis dermatitis:                                    
            Lower extremity....................................           30
            Upper extremity....................................           20
    7114  Arteriosclerosis obliterans:                                      
        Ischemic limb pain at rest, and; either deep ischemic               
         ulcers or ankle/brachial index of 0.4 or less.........          100
        Claudication on walking less than 25 yards on a level               
         grade at 2 miles per hour, and; either persistent                  
         coldness of the extremity or ankle/brachial index of               
         0.5 or less...........................................           60
        Claudication on walking between 25 and 100 yards on a               
         level grade at 2 miles per hour, and; trophic changes              
         (thin skin, absence of hair, dystrophic nails) or                  
         ankle/brachial index of 0.7 or less...................           40
        Claudication on walking more than 100 yards, and;                   
         diminished peripheral pulses or ankle/brachial index               
         of 0.9 or less........................................           20
                                                                            
    Note (1): The ankle/brachial index is the ratio of the                  
     systolic blood pressure at the ankle (determined by                    
     Doppler study) divided by the simultaneous brachial artery             
     systolic blood pressure. The normal index is 1.0 or                    
     greater.                                                               
    Note (2): Evaluate residuals of aortic and large arterial               
     bypass surgery or arterial graft as arteriosclerosis                   
     obliterans.                                                            
    Note (3): These evaluations are for involvement of a single             
     extremity. If more than one extremity is affected,                     
     evaluate each extremity separately and combine (under Sec.             
      4.25), using the bilateral factor (Sec.  4.26), if                    
     applicable.                                                            
                                                                            
    
    [[Page 65223]]
    
                                                                            
    7115  Thrombo-angiitis obliterans (Buerger's Disease):                  
        Ischemic limb pain at rest, and; either deep ischemic               
         ulcers or ankle/brachial index of 0.4 or less.........          100
        Claudication on walking less than 25 yards on a level               
         grade at 2 miles per hour, and; either persistent                  
         coldness of the extremity or ankle/brachial index of               
         0.5 or less...........................................           60
        Claudication on walking between 25 and 100 yards on a               
         level grade at 2 miles per hour, and; trophic changes              
         (thin skin, absence of hair, dystrophic nails) or                  
         ankle/brachial index of 0.7 or less...................           40
        Claudication on walking more than 100 yards, and;                   
         diminished peripheral pulses or ankle/brachial index               
         of 0.9 or less........................................           20
                                                                            
    Note (1): The ankle/brachial index is the ratio of the                  
     systolic blood pressure at the ankle (determined by                    
     Doppler study) divided by the simultaneous brachial artery             
     systolic blood pressure. The normal index is 1.0 or                    
     greater.                                                               
    Note (2): These evaluations are for involvement of a single             
     extremity. If more than one extremity is affected,                     
     evaluate each extremity separately and combine (under Sec.             
      4.25), using the bilateral factor (Sec.  4.26), if                    
     applicable.                                                            
                                                                            
    7117  Raynaud's syndrome:                                               
        With two or more digital ulcers plus autoamputation of              
         one or more digits and history of characteristic                   
         attacks...............................................          100
        With two or more digital ulcers and history of                      
         characteristic attacks................................           60
        Characteristic attacks occurring at least daily........           40
        Characteristic attacks occurring four to six times a                
         week..................................................           20
        Characteristic attacks occurring one to three times a               
         week..................................................           10
    Note: For purposes of this section, characteristic attacks              
     consist of sequential color changes of the digits of one               
     or more extremities lasting minutes to hours, sometimes                
     with pain and paresthesias, and precipitated by exposure               
     to cold or by emotional upsets. These evaluations are for              
     the disease as a whole, regardless of the number of                    
     extremities involved or whether the nose and ears are                  
     involved.                                                              
                                                                            
    7118  Angioneurotic edema:                                              
        Attacks without laryngeal involvement lasting one to                
         seven days or longer and occurring more than eight                 
         times a year, or; attacks with laryngeal involvement               
         of any duration occurring more than twice a year......           40
        Attacks without laryngeal involvement lasting one to                
         seven days and occurring five to eight times a year,               
         or; attacks with laryngeal involvement of any duration             
         occurring once or twice a year........................           20
        Attacks without laryngeal involvement lasting one to                
         seven days and occurring two to four times a year.....           10
    7119  Erythromelalgia:                                                  
        Characteristic attacks that occur more than once a day,             
         last an average of more than two hours each, respond               
         poorly to treatment, and that restrict most routine                
         daily activities......................................          100
        Characteristic attacks that occur more than once a day,             
         last an average of more than two hours each, and                   
         respond poorly to treatment, but that do not restrict              
         most routine daily activities.........................           60
        Characteristic attacks that occur daily or more often               
         but that respond to treatment.........................           30
        Characteristic attacks that occur less than daily but               
         at least three times a week and that respond to                    
         treatment.............................................           10
                                                                            
    Note: For purposes of this section, a characteristic attack             
     of erythromelalgia consists of burning pain in the hands,              
     feet, or both, usually bilateral and symmetrical, with                 
     increased skin temperature and redness, occurring at warm              
     ambient temperatures. These evaluations are for the                    
     disease as a whole, regardless of the number of                        
     extremities involved.                                                  
                                                                            
    7120  Varicose veins:                                                   
        With the following findings attributed to the effects               
         of varicose veins: Massive board-like edema with                   
         constant pain at rest.................................          100
        Persistent edema or subcutaneous induration, stasis                 
         pigmentation or eczema, and persistent ulceration.....           60
        Persistent edema and stasis pigmentation or eczema,                 
         with or without intermittent ulceration...............           40
        Persistent edema, incompletely relieved by elevation of             
         extremity, with or without beginning stasis                        
         pigmentation or eczema................................           20
        Intermittent edema of extremity or aching and fatigue               
         in leg after prolonged standing or walking, with                   
         symptoms relieved by elevation of extremity or                     
         compression hosiery...................................           10
        Asymptomatic palpable or visible varicose veins........            0
                                                                            
    Note: These evaluations are for involvement of a single                 
     extremity. If more than one extremity is involved,                     
     evaluate each extremity separately and combine (under Sec.             
      4.25), using the bilateral factor (Sec.  4.26), if                    
     applicable.                                                            
                                                                            
    7121  Post-phlebitic syndrome of any etiology:                          
        With the following findings attributed to venous                    
         disease:                                                           
            Massive board-like edema with constant pain at rest          100
            Persistent edema or subcutaneous induration, stasis             
             pigmentation or eczema, and persistent ulceration.           60
            Persistent edema and stasis pigmentation or eczema,             
             with or without intermittent ulceration...........           40
            Persistent edema, incompletely relieved by                      
             elevation of extremity, with or without beginning              
             stasis pigmentation or eczema.....................           20
            Intermittent edema of extremity or aching and                   
             fatigue in leg after prolonged standing or                     
             walking, with symptoms relieved by elevation of                
             extremity or compression hosiery..................           10
            Asymptomatic palpable or visible varicose veins....            0
                                                                            
    Note: These evaluations are for involvement of a single                 
     extremity. If more than one extremity is involved,                     
     evaluate each extremity separately and combine (under Sec.             
      4.25), using the bilateral factor (Sec.  4.26), if                    
     applicable.                                                            
                                                                            
    7122  Cold injury residuals:                                            
        With pain, numbness, cold sensitivity, or arthralgia                
         plus two or more of the following: tissue loss, nail               
         abnormalities, color changes, locally impaired                     
         sensation, hyperhidrosis, X-ray abnormalities                      
         (osteoporosis, subarticular punched out lesions, or                
         osteoarthritis) of affected parts.....................           30
        With pain, numbness, cold sensitivity, or arthralgia                
         plus tissue loss, nail abnormalities, color changes,               
         locally impaired sensation, hyperhidrosis, or X-ray                
         abnormalities (osteoporosis, subarticular punched out              
         lesions, or osteoarthritis) of affected parts.........           20
        With pain, numbness, cold sensitivity, or arthralgia...           10
                                                                            
    Note (1): Amputations of fingers or toes, and complications             
     such as squamous cell carcinoma at the site of a cold                  
     injury scar or peripheral neuropathy should be separately              
     evaluated under other diagnostic codes.                                
    Note (2): Evaluate each affected part (hand, foot, ear,                 
     nose) separately and combine the ratings, if appropriate,              
     in accordance with Secs.  4.25 and 4.26.                               
                                                                            
    
    [[Page 65224]]
    
                                                                            
    7123  Soft tissue sarcoma (of vascular origin).............          100
                                                                            
    Note: A rating of 100 percent shall continue beyond the                 
     cessation of any surgical, X-ray, antineoplastic                       
     chemotherapy or other therapeutic procedure. Six months                
     after discontinuance of such treatment, the appropriate                
     disability rating shall be determined by mandatory VA                  
     examination. Any change in evaluation based upon that or               
     any subsequent examination shall be subject to the                     
     provisions of Sec.  3.105(e) of this chapter. If there has             
     been no local recurrence or metastasis, rate on residuals.             
    ------------------------------------------------------------------------
    
    (Authority: 38 U.S.C. 1155)
    
    [FR Doc. 97-32413 Filed 12-10-97; 8:45 am]
    BILLING CODE 8320-01-P
    
    
    

Document Information

Effective Date:
1/12/1998
Published:
12/11/1997
Department:
Veterans Affairs Department
Entry Type:
Rule
Action:
Final rule.
Document Number:
97-32413
Dates:
This amendment is effective January 12, 1998.
Pages:
65207-65224 (18 pages)
RINs:
2900-AE40: Schedule for Rating Disabilities--The Cardiovascular System
RIN Links:
https://www.federalregister.gov/regulations/2900-AE40/schedule-for-rating-disabilities-the-cardiovascular-system
PDF File:
97-32413.pdf
CFR: (2)
38 CFR 4.7.)
38 CFR 4.104