ICD-10-CM 2027
ICD-10 code for immunodeficiency virus disease human
From the official ICD-10-CM alphabetic index entry “Human › immunodeficiency virus (HIV) disease (infection)”. Page updated September 29, 2026.
About coding immunodeficiency virus disease human
The ICD-10-CM code for immunodeficiency virus disease human is B20 (Human immunodeficiency virus [HIV] disease). The official index lists 8 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on B20.
Don't report B20 together with the conditions in its Excludes1 note: asymptomatic human immunodeficiency virus [HIV] infection status (Z21), exposure to HIV virus (Z20.6) and inconclusive serologic evidence of HIV (R75).
Code first: Human immunodeficiency virus [HIV] disease complicating pregnancy, childbirth and the puerperium, if applicable (O98.7-).
Use an additional code(s) to identify all manifestations of HIV infection.
More specific immunodeficiency virus disease human codes (official index)
- asymptomatic status Z21 — Asymptomatic human immunodeficiency virus [HIV] infection status
- contact Z20.6 — Contact with and (suspected) exposure to human immunodeficiency virus [HIV]
- counseling Z71.7 — Human immunodeficiency virus [HIV] counseling
- dementia B20 — Human immunodeficiency virus [HIV] disease
- with behavioral disturbance B20 — Human immunodeficiency virus [HIV] disease
- exposure to Z20.6 — Contact with and (suspected) exposure to human immunodeficiency virus [HIV]
- laboratory evidence R75 — Inconclusive laboratory evidence of human immunodeficiency virus [HIV]
- type-2 (HIV 2) as cause of disease classified elsewhere B97.35 — Human immunodeficiency virus, type 2 [HIV 2] as the cause of diseases classified elsewhere
Don't confuse with (Excludes1 for B20)
Common questions about immunodeficiency virus disease human ICD-10 codes
What is the ICD-10 code for immunodeficiency virus disease human?
- B20 — Human immunodeficiency virus [HIV] disease. More specific codes apply when the documentation supports them: Z21, Z20.6, Z71.7, B20 and others below.
What is the ICD-10 code for asymptomatic status immunodeficiency virus disease human?
- Z21 — Asymptomatic human immunodeficiency virus [HIV] infection status.
What is the ICD-10 code for contact immunodeficiency virus disease human?
- Z20.6 — Contact with and (suspected) exposure to human immunodeficiency virus [HIV].
What is the ICD-10 code for counseling immunodeficiency virus disease human?
- Z71.7 — Human immunodeficiency virus [HIV] counseling.
What is the ICD-10 code for dementia immunodeficiency virus disease human?
- B20 — Human immunodeficiency virus [HIV] disease.
What is the ICD-10 code for exposure to immunodeficiency virus disease human?
- Z20.6 — Contact with and (suspected) exposure to human immunodeficiency virus [HIV].
What is the ICD-10 code for laboratory evidence immunodeficiency virus disease human?
- R75 — Inconclusive laboratory evidence of human immunodeficiency virus [HIV].
Is B20 billable?
- Yes. B20 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can B20 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict B20 as a principal diagnosis.
Is B20 a CC or MCC?
- B20 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.