B20

ICD-10Billable

Human immunodeficiency virus [HIV] disease

Official ICD-10-CM descriptor (FY2026)

Human immunodeficiency virus [HIV] disease

B20 is valid for submission on a claim: CMS flags it as a billable, specific code.

Includes

acquired immune deficiency syndrome [AIDS]
AIDS-related complex [ARC]
HIV infection, symptomatic

Excludes1

Not coded here. An Excludes1 code should never be reported at the same time as the code above it.

asymptomatic human immunodeficiency virus [HIV] infection status (Z21)
exposure to HIV virus (Z20.6)
inconclusive serologic evidence of HIV (R75)

Code first

Sequence the underlying condition before this code.

Human immunodeficiency virus [HIV] disease complicating pregnancy, childbirth and the puerperium, if applicable (O98.7-)

Use additional code

Report an additional code to identify the associated condition.

code(s) to identify all manifestations of HIV infection

Where this code sits

Chapter: 1. Certain infectious and parasitic diseases (A00-B99)
Block: Human immunodeficiency virus [HIV] disease (B20)

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.