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Updated Aug 02, 2022

In This Chapter

This chapter contains the following topics:
Topic
Topic Name
1
2
3
4
5
6

1.  General Rating Principles for Infectious Diseases, Immune Disorders, and Nutritional Deficiencies


Introduction


Change Date

August 12, 2019

V.iii.3.1.a.  Definition:  Infectious Diseases

Infectious diseases are disorders caused by organisms, such as bacteria, viruses, fungi, or parasites.
Example:  Malaria.
Note:  Consider presumptive service connection (SC) for infectious diseases listed in
  • 38 CFR 3.309(b) based on tropical service
  • 38 CFR 3.309(c) based on confirmed former prisoner of war (FPOW) status, and
  • 38 CFR 3.317(c) based on service in the Southwest Asia theater of operations during the Gulf War or on or after September 19, 2001, in Afghanistan.
References:  For more information on presumptive SC for

V.iii.3.1.b.  Definition:  Immune Disorders

Immune disorders cause abnormally low activity or overactivity of the immune system.  In cases of immune system overactivity, the body attacks and damages its own tissues (autoimmune diseases).  Immune deficiency diseases decrease the body’s ability to fight invaders, causing vulnerability to infections.  Immune disorders can be caused by organisms, use of medications, or other chronic conditions.
Example:  Systemic lupus erythematosus.
Note:  Consider presumptive SC for immune disorders listed in 38 CFR 3.309(a).

V.iii.3.1.c.  Definition:  Nutritional Deficiencies

Nutritional deficiencies occur when the body is unable to obtain the necessary amount of a nutrient that is required for proper health.  These deficiencies can be caused by diet, surgical residuals, genetics, environment, or other diseases.
Example:  Beriberi.
Note:  Consider presumptive SC for disabilities listed in SC 38 CFR 3.309(c) based on based on confirmed FPOW status.
Reference:  For more information on presumptive SC for FPOW disabilities, see M21-1, Part VIII, Subpart iv, 2.D.3.

V.iii.3.1.d.  Revisions of the Infectious Diseases, Immune Disorders, and Nutritional Deficiencies Rating Schedule

The criteria for rating disabilities based on infectious diseases, immune disorders, and nutritional deficiencies in 38 CFR 4.88b were most recently updated effective
  • August 11, 2019, and
  • August 30, 1996.
The purpose of these updates was to
  • incorporate medical advances
  • update medical terminology
  • add disabilities not previously included, and
  • refine rating criteria.
Note:  These updates were not liberalizing changes in the rating criteria.
References:  For more information on

V.iii.3.1.e.  Evaluations Under the Infectious Diseases General Rating Formula

Prior to the August 11, 2019, rating schedule revision, each infectious disease listed under 38 CFR 4.88b had its own prescribed rating criteria.
Effective August 11, 2019, 38 CFR 4.88b contains a general rating formula applicable to multiple infectious diseases, regardless of etiology.
For each diagnostic code (DC) that refers to this general rating formula, decision makers must
  • assign the prescribed evaluation during the active disease phase, and thereafter,
  • assign
    • a 0-percent evaluation for the infectious disease under the relevant 38 CFR 4.88b DC, and
    • evaluations for any residual disability of the infection within the appropriate body system as indicated by the notes in the evaluation criteria.
Notes:
  • Regardless of whether resolution occurs spontaneously or because of treatment, long-term disability in such situations results from residual functional impairment of the body systems affected by the infectious disease, rather than the infection itself.
  • Infectious diseases for both the initial diagnosis and any relapse of active infection must be confirmed by diagnostic testing specific to the disease.

V.iii.3.1.f.  Evaluating Long-Term Health Effects of 38 CFR 3.317 Infectious Diseases

As applicable, consider the long-term health effects potentially associated with infectious diseases as listed in 38 CFR 3.317(d), specifically for brucellosis, Campylobacter jejuni, Coxiella burnetii (Q fever), malaria, Mycobacterium tuberculosis, nontyphoid Salmonella, Shigella, visceral leishmaniasis, and West Nile virus.
Reference:  For more information on presumptive SC for infectious diseases under 38 CFR 3.317, see M21-1, Part VIII, Subpart ii, 1.A.1.p.

2.  Tropical Diseases

Introduction

This topic contains information about tropical diseases, including

Change Date

December 13, 2005

V.iii.3.2.a. Specific Tropical Diseases

The following tropical diseases, among others, may require attention in view of their incidence in areas of foreign service:
  • bacterial infections, including
    • bacillary dysentery
    • cholera
    • Hansen’s disease (leprosy)
    • Oroya fever
    • pinta
    • plague
    • relapsing fever, and
    • yaws
  • viral infections, including yellow fever
  • roundworm parasitic infections, including
    • dracontiasis
    • filariasis (Bancroft’s type)
    • hookworm infection
    • loiasis, and
    • onchocerciasis
  • other parasitic infections, including
    • amebiasis
    • blackwater fever
    • leishmaniasis
    • malaria, and
    • schistosomiasis.
Notes:
  • Rate amebiasis and schistosomiasis under the digestive system.
  • Rate pinta, verruga peruana (a late residual of Oroya fever), onchoceriasis, oriental sore, and espundia (Old World cutaneous and American (New World) mucocutaneous leishmaniasis) under diseases of the skin.
Reference:  For more information on tropical diseases, see

V.iii.3.2.b. Obtaining Information about Tropical Diseases

An understanding of the locality, incubation period, and residuals of tropical diseases may be obtained from standard treatises.
Reference: For more information on tropical diseases, see The Merck Manual of Diagnosis and Therapy.

V.iii.3.2.c. Incubation Periods of Tropical Diseases

The table below contains the incubation periods of some tropical diseases.
Tropical Disease
Incubation Period
dracontiasis (Guinea worm disease)
14 months
filariasis, Bancroft’s type
up to 8 to 12 months
kala-azar (visceral leishmaniasis)
up to one year
Hansen’s disease (leprosy)
five years or more
loiasis, calabar swelling
three years
oriental sore, Old World cutaneous leishmaniasis
up to 18 months

V.iii.3.2.d. Considering SC for Tropical Diseases Not of Record

When considering SC for tropical diseases not of record during service always
  • consider tropical residence other than that during military service, and
  • consult standard texts for disease factors, such as
    • locality of confinement
    • early symptoms
    • course of the disease, and
    • periods of incubation.
Reference:  For more information on developing claims for SC for tropical diseases, see M21-1, Part VIII, Subpart iii, 1.

 

3.  Rheumatic Fever


Introduction

This topic contains information about rheumatic fever, including

Change Date

December 13, 2005

V.iii.3.3.a. Definition: Rheumatic Fever

Rheumatic fever is an acute, subacute, or chronic systemic disease that, for unknown reasons, is self-limiting or may lead to slowly progressive valve deformity of the heart.
Reference:  For more information on evaluating rheumatic fever, see 38 CFR 4.88b, DC 6309.

V.iii.3.3.b. Complications of Rheumatic Fever

Complications of rheumatic fever include
  • cardiac arrhythmias
  • pericarditis
  • rheumatic pneumonitis
  • pulmonary embolism
  • pulmonary infarction
  • valve deformity, and
  • in extreme cases, congestive heart failure.

V.iii.3.3.c. Prognosis of Rheumatic Fever

The prognosis is good in cases of rheumatic fever.
If the age of onset is postadolescence, residual heart damage
  • occurs in less than 20 percent of the cases, and
  • is generally less severe than if the onset is during childhood.
Note:  Mitral valve insufficiency is the most common residual.

V.iii.3.3.d. Considering the Effects of Rheumatic Heart Disease

For more information on the effects of rheumatic heart disease, see

 

4.  HIV-Related Illness


Introduction

This topic contains information about HIV-related illness, including

Change Date

August 12, 2019

V.iii.3.4.a. Definition: HIV

Human immunodeficiency virus (HIV) is spread through body fluids that affect specific cells of the immune system, called CD4 cells, or T cells.  Over time, HIV can destroy so many of these cells that the body cannot fight off infections and disease.
Reference:  For more information on rating HIV, see

V.iii.3.4.b.  Definition:  AIDS

Acquired immunodeficiency syndrome (AIDS) is a secondary infection and results from HIV infection.  It is not a single distinct disease, but rather a disorder characterized by a severe suppression of the immune system, rendering the body susceptible to and unable to fight off a variety of normally manageable infections, cancers, and other diseases.
Patients with AIDS suffer infections called “opportunistic” because they take the opportunity to attack when the immune system is weak.  This may involve the intestinal tract, lungs, brain, eyes and other organs, as well as debilitating weight loss, diarrhea, and neurologic conditions.
Important:  If a Veteran has HIV and one or more of the following opportunistic infections, regardless of the CD4 (T4) count, the Veteran is considered to have a diagnosis of AIDS:
  • candidiasis of the bronchi, trachea, esophagus, or lungs
  • invasive cervical cancer
  • coccidioidomycosis
  • cryptococcosis
  • cryptosporidiosis
  • cytomegalovirus (particularly CMV retinitis)
  • HIV-related encephalopathy
  • herpes simplex-chronic ulcers for greater than one month, or bronchitis, pneumonia, or esophagitis
  • histoplasmosis
  • isosporiasis (chronic intestinal)
  • Kaposi’s sarcoma
  • lymphoma
  • mycobacterium avium complex
  • tuberculosis
  • pneumocystis jirovecii (carinii) pneumonia
  • pneumonia, recurrent
  • progressive multifocal leukoencephalopathy
  • salmonella septicemia, recurrent
  • toxoplasmosis of the brain, and
  • wasting syndrome due to HIV.
References:  For more information on

V.iii.3.4.c.  How HIV Is Diagnosed

HIV is primarily detected by testing a person’s blood for the presence of antibodies (disease-fighting proteins) to HIV.  Two antibody tests ELISA (enzyme-linked immunosorbent assay) and Western blot assay (a confirmatory test) are used.  An alternative test, IFA (indirect immunofluorescence assay), may also be used.
The ELISA and Western blot may be negative for as long as three to six months after exposure to HIV.
If a person is highly likely to be infected with HIV, but both tests are negative, a test for the presence of HIV itself in the blood may be done.

V.iii.3.4.d.  Definition: CD4 T Cells

CD4 T cell is a type of lymphocyte, the white blood cell that bears the major responsibility for the activities of the immune system.  The other major type is the B cell.  Together, they fight off invading viruses, bacteria, parasites, and fungi.  The “T4,” “helper-T,” or “CD4” cell helps regulate and direct immune activity.
Notes:
  • A healthy, uninfected person has 800-1200 (or 500 to 1500 by some references) CD4 T cells per cubic millimeter of blood.
  • During HIV, the number of these cells in the blood progressively declines.
  • When the count falls below 200, the person is vulnerable to the opportunistic infections and cancers that typify AIDS.

V.iii.3.4.e.  HIV Transmission

Major means of HIV transmission are
  • sexual contact
  • infected blood, and
  • needle stick accidents.
Notes:
  • No evidence exists that HIV is transmitted through
    • saliva, sweat, tears, urine, or feces
    • casual contact such as the sharing of food utensils, towels and bedding, swimming pools, telephones, or toilet seats, or
    • biting insects such as mosquitoes, flies, ticks, fleas, bees, wasps, or bedbugs.
  • If there is evidence indicating that the HIV-related illness was the result of intravenous drug abuse, ensure that the authorization activity has conducted a willful misconduct/line-of-duty (LOD) administrative decision prior to rating.
  • There is no presumptive SC provision for HIV.  Veterans must establish SC under other provisions, such as direct SC under 38 CFR 3.303 by establishing an in-service event, injury, or disease as the cause of HIV.
References:  For more information on

V.iii.3.4.f.  Definition: Approved Medication(s)

When rating an HIV case, the term approved medication(s) includes treatment regimens and medications prescribed as part of a research protocol at an accredited medical institution.

V.iii.3.4.g.  Rating Considerations for HIV-related Illness

When evaluating HIV-related illness, consider
  • severity and frequency of constitutional symptoms
  • use of approved medication(s)
  • T4 cell count, and
  • the development of AIDS-related opportunistic infection or neoplasm.
Notes:
  • Only patients with HIV who are asymptomatic should be rated at 0 percent.
  • An evaluation of 30 percent should be the minimum if there are recurrent constitutional symptoms, even if they have responded to appropriate treatment.
  • In rating HIV, consider the following:
    • rating may be based on 38 CFR 4.88b, DC 6351 criteria, or
    • separate evaluations may be warranted under the appropriate diagnostic codes (DCs) if other defined conditions due to HIV infection or its treatment develop.  This could include psychiatric illness, central nervous system manifestations, opportunistic infections, and neoplasms.
Examples:
  • Enlarged lymph nodes and fatigue (HIV-related constitutional symptoms) warrant a 10-percent evaluation; however, if pelvic inflammatory disease (PID) or other symptoms develop, the evaluation could go to 30 percent if the symptoms go into remission and then reoccur (recurrent symptoms) or 60 percent if they do not respond to treatment (refractory symptoms).
  • If there is a CD4 count of 400, the Veteran is on HAART (highly active antiretroviral therapy), and there are symptoms of depression but no other significant signs or symptoms of the infection or its treatment, it would be appropriate to assign 10 percent.  However, if the depression rises to the level of a diagnosed major depression or dysthymic disorder, consider evaluating it separately as a secondary condition, with the potential of a higher rating.  The HIV infection would still warrant a 10-percent evaluation under 38 CFR 4.88b, DC 6351, based on findings not related to symptoms of depression—low CD4 count and treatment.
Reference:  For more information on avoidance of pyramiding, see

V.iii.3.4.h.  Rating AIDS

Once a Veteran develops AIDS, evaluate the specific findings based on the table below.
In instances of …
Note that …
opportunistic infections
  • once an AIDS-related opportunistic infection or neoplasm appears, the rating will be 60 percent or above
  • many of the opportunistic infections will warrant a 100- percent evaluation, at least for a time (tuberculosis, lymphoma, etc.), and
  • special monthly compensation (SMC) will be a frequent consideration.
cancer
it should be rated separately, if advantageous to the Veteran, as long as its symptomatologies are not also used to support a 60- or 100-percent evaluation under 38 CFR 4.88b, DC 6351.
episodic problems
  • the possibility exists that a particular examination may have been done at a time between episodes of opportunistic infections when findings are relatively few, and
  • the overall history for the past year or so should be considered when rating since some AIDS complications can be episodic.
References:  For more information on,

 

5.  Chronic Fatigue Syndrome


Introduction

This topic contains information about chronic fatigue syndrome, including

Change Date

August 12, 2019

V.iii.3.5.a. Definition: Chronic Fatigue Syndrome

Chronic fatigue syndrome is a complex, multisymptom, debilitating illness characterized by physical and mental manifestations.

V.iii.3.5.b.  Rating Considerations for CFS

When rating a chronic fatigue syndrome case, keep in mind that a diagnosis requires the following:
  • new onset of debilitating fatigue severe enough to reduce daily activity to less than 50 percent of the usual level for at least six months, and
  • the exclusion, by way of a thorough evaluation, of all other clinical conditions that may produce similar symptoms based on history, physical examination, and laboratory tests.
In addition, six or more of the following criteria must be met:
  • acute onset of the condition
  • low grade fever
  • sore throat with no secretions (nonexudative pharyngitis)
  • palpable or tender cervical or axillary lymph nodes
  • generalized muscle aches or weakness
  • fatigue lasting 24 hours or longer after exercise
  • headaches (of a type, severity, or pattern that is different from headaches in the pre-morbid state)
  • migratory joint pains
  • neuropsychological symptoms, and
  • sleep disturbance.
Note:  Consider presumptive SC for chronic fatigue syndrome as a medically unexplained chronic multisymptom illness under 38 CFR 3.317(a).
Reference:  For more information on chronic fatigue syndrome, see

6.  COVID-19


Introduction


Change Date

August 2, 2022

V.iii.3.6.a.  Definition:  COVID-19

Novel Coronavirus (COVID-19) is a disease caused by a virus called severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).  COVID-19 may also be referred to as any of the following:
  • coronavirus, or
  • coronavirus disease.
Note:  Consider claims for SC for COVID-19 under both a presumptive and direct basis.
References:  For more information on

V.iii.3.6.b.  Use of the COVID-19 Special Issue Indicator

The COVID-19 Veterans Benefits Management System contention-based special issue indicator referenced in M21-1, Part VIII, Subpart iii, 10.3.a should be used for all COVID-19 claims regardless of the theory of SC being utilized in the claim.
Reference:  For more information on the use of special issue indicators, see M21-4, Appendix E.2.

V.iii.3.6.c.  Active vs. Acute COVID-19

COVID-19 is an acute infectious disease.  As an acute infectious disease, COVID-19 should only be rated based on chronic residual condition(s).  If a Veteran previously had COVID-19 and is currently asymptomatic, deny the claim based on no evidence of a current, chronic disability.
Important:  Do not arbitrarily determine that a chronic disability is not demonstrated without relying on competent medical evidence.
References:  For more information on

V.iii.3.6.d.  Residuals of COVID-19

38 CFR 4.88b advises to rate any residual disability of infection within the appropriate body system.   As applicable, consider the long-term health effects potentially associated with the infectious disease.  If COVID-19 was diagnosed and resolved during a period of qualifying service or any applicable presumptive period, any chronic residuals attributable to the disease may be SC.
Assign the most appropriate DC for residuals based on general rating principles.
Serious long-term complications may include, but are not limited to, the following types of issues:
  • respiratory
  • genitourinary (residuals of acute kidney injury)
  • cardiovascular (inflammation of the heart muscle, heart attack, stroke, blood clots)
  • skin (rash, hair loss)
  • audiological (hearing problems)
  • loss of sense of smell and/or taste
  • neurological, and
  • psychiatric (depression, anxiety, changes in mood).
Important:
  • Since the long-term effects of this disease are still being studied, decision makers must rely on the expertise of medical professionals to determine whether the chronic residual is due to COVID-19.  A medical nexus opinion will generally be required to determine whether a disability is a chronic residual of COVID-19.
  • Evaluations for pension purposes must be based on permanent residuals of COVID-19.
Reference:  For more information on requesting examinations in claims for SC for residuals of COVID-19, see M21-1, Part VIII, Subpart iii, 10.5.

V.iii.3.6.e.  Delayed Onset of COVID-19 Residuals

Post-COVID-19 conditions are a wide range of new, returning, or ongoing health problems people can experience four weeks or more after first being infected with the virus that causes COVID-19.  If a Veteran is denied SC for COVID-19 due to a lack of a chronic residual disability, a condition may manifest later.
When a new or supplemental claim is submitted for a post-COVID chronic residual that manifested at a later date, consider SC for the claimed issue.  The claim(s) for the post-COVID-19 residual is sufficient new and relevant evidence in a supplemental claim scenario.  Request an examination and/or medical opinion, when otherwise warranted, to link the condition to the prior COVID-19 infection.
Example 1:  A Veteran with an in-service diagnosis of COVID-19 is denied entitlement to compensation because there is no evidence of a chronic residual.  Two months later, a new claim for headaches due to COVID-19 is received.  This is an initial claim for a new issue that may be associated with an in-service event.  Service treatment records are negative for headache complaints.  An exam and medical opinion may be needed to determine whether the claimed headaches are a chronic, post-COVID-19 residual disability.
Example 2:  A Veteran with an in-service diagnosis of COVID-19 is denied entitlement to compensation because there is no evidence of a chronic residual.  Two months later, a supplemental claim for COVID-19 is received with evidence of a new positive COVID-19 test.  There is no allegation or indication of a chronic condition.  The evidence is new and relevant, but continued denial is warranted because there is no evidence of a chronic residual disability.
References:  For more information on

V.iii.3.6.f.  Disabilities Resulting From COVID-19 Vaccination

If evidence establishes that an individual suffers from a disabling condition as result of receiving a COVID-19 vaccination, the disability is subject to SC under the general principles for direct SC.
Note:  If the vaccination-related residual is the result of vaccination received during a period of inactive duty for training (IADT), the individual may be considered disabled by an “injury” incurred during such training.  Consequently, such an individual may be found to have incurred disability, on a direct basis, allowing recognition of the IADT period as a period of active service under 38 CFR 3.6.
Reference:  For more information on the requirements for IADT to be considered active service, see M21-1, Part V, Subpart ii, 2.A.2.f.

V.iii.3.6.g.  Hospitalization and Convalescent Ratings for COVID-19 Residuals

If a Veteran is hospitalized due to a complication of COVID-19 for over 21 days, apply the provisions of 38 CFR 4.29 to assign a hospital rating.
  • Assign the hospital rating for the primary condition that warranted hospitalization.
  • If the primary cause of the hospitalization is unknown, consider reported symptoms and other evidence of record to determine the most appropriate disability for which to assign the hospitalization rating.
  • If the Veteran remains hospitalized at the time the claim is considered, assign an open-ended hospital evaluation as warranted.
  • Following the hospitalization, assign an appropriate schedular evaluation for any chronic residual, applying 38 CFR 4.31 when appropriate.
Note:  Application of 38 CFR 4.30 requires surgical treatment, which may occur for treatment of certain COVID-19 residuals.  However, do not apply the provisions of 38 CFR 4.30(a)(2) concerning the necessity of house confinement to a period of self-quarantine due to COVID-19 since self-quarantine would be unrelated to the surgical treatment.
References:  For more information on

V.iii.3.6.h.  Applicable Theories of SC for COVID-19 Residuals

Consider theories of SC for COVID-19 raised by the Veteran or by the evidence of record in accordance with M21-1, Part II, Subpart iii, 1.A.2.e, and apply the most advantageous theory supported by the evidentiary record.
References:  For more information on