B20
Human immunodeficiency virus [HIV] disease
HCC risk adjustment mapping
CMS-HCC V28
HIV/AIDS
CMS-HCC ESRD V24
HIV/AIDS
RxHCC V08
HIV/AIDS
Coding notes
Excludes 1 never coded together · Excludes 2 may co-exist
acquired immune deficiency syndrome [AIDS] AIDS-related complex [ARC] HIV infection, symptomatic
asymptomatic human immunodeficiency virus [HIV] infection status (Z21) exposure to HIV virus (Z20.6) inconclusive serologic evidence of HIV (R75)
code(s) to identify all manifestations of HIV infection
Human immunodeficiency virus [HIV] disease complicating pregnancy, childbirth and the puerperium, if applicable (O98.7-)
diseases generally recognized as communicable or transmissible
certain localized infections - see body system-related chapters
carrier or suspected carrier of infectious disease (Z22.-) infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-) infectious and parasitic diseases specific to the perinatal period (P35-P39) influenza and other acute respiratory infections (J00-J22)
code to identify resistance to antimicrobial drugs (Z16.-)
Official Guidelines for B20
FY 2026 ›Subsections
- I.C.1.aHuman Immunodeficiency Virus (HIV) Infections
- I.C.1.bInfectious agents as the cause of diseases classified to other chapters
- I.C.1.cInfections resistant to antibiotics
- I.C.1.dSepsis, Severe Sepsis, and Septic Shock Infections resistant to antibiotics
- I.C.1.eMethicillin Resistant Staphylococcus aureus (MRSA) Conditions
- I.C.1.fZika virus infections
- I.C.1.gCoronavirus infections
Sections that reference B20
- I.C.1.a.2)(a)HIV disease
… for any HIV-related illness or is described as having any condition(s) resulting from the patient’s HIV positive status; code B20, Human immunodeficiency virus [HIV], should be assigned.
- I.C.1.a.2)(b)Patient admitted for HIV-related condition
If a patient is admitted for an HIV-related condition, the principal diagnosis should be B20, Human immunodeficiency virus [HIV] disease followed by additional diagnosis codes for all reported HIV-related conditions. …
- I.C.1.a.2)(c)Patient with HIV disease admitted for unrelated condition
… Code B20 would be reported as a secondary diagnosis. …
- I.C.1.a.2)(g)Previously diagnosed HIV-related illness
Patients with documentation of a prior diagnosis of an HIV-related illness should be coded to B20. Once an HIV-related illness has developed, code B20 should always be assigned on every subsequent admission/encounter. …
- I.C.1.a.2)(h)HIV Infection in Pregnancy, Childbirth and the Puerperium
… O98.7, Human immunodeficiency [HIV] disease complicating pregnancy, childbirth and the puerperium, followed by code B20 and additional code(s) for any HIV-related illness(es). …
- I.C.1.a.2)(j)HIV disease or HIV positive status managed by antiretroviral medication
… with documented HIV disease, HIV-related illness or AIDS is currently managed on antiretroviral medications, assign code B20, Human immunodeficiency virus [HIV] disease. …
Sections whose FY 2026 text names B20, its B20 category, or a range containing it — the chapter guidance above is the authoritative source.
Find B20 in the alphabetic index
15 index paths lead to this code
- AIDS
- ARC
- HIV
- Slim disease
- Acquired › immunodeficiency syndrome
- Disease, diseased › human immunodeficiency virus
- Disease, diseased › slim
- Human › immunodeficiency virus
- Syndrome › HIV infection, acute
- Dementia › in › human immunodeficiency virus disease
- Disease, diseased › viral, virus › human immunodeficiency
- Encephalitis › due to › human immunodeficiency virus disease
- Human › immunodeficiency virus › dementia
- Dementia › in › human immunodeficiency virus disease › with behavioral disturbance
- Human › immunodeficiency virus › dementia › with behavioral disturbance