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B20

Billable

Human immunodeficiency virus [HIV] disease

B20 is the ICD-10-CM code for Human immunodeficiency virus [HIV] disease. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
A00-B99
Edition
FY2026

A00-B99 Certain infectious and parasitic diseases

Includes

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

Excludes1 — not coded here

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

Code first

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

Use additional code

  • •code(s) to identify all manifestations of HIV infection

Frequently asked questions

What is ICD-10 code B20?
B20 is the ICD-10-CM code for "Human immunodeficiency virus [HIV] disease". It falls under A00-B99 Certain infectious and parasitic diseases.
Is B20 a billable code?
Yes — B20 is a billable, specific ICD-10-CM code valid for reimbursement.
What is excluded from B20?
Excludes1 (not coded here): asymptomatic human immunodeficiency virus [HIV] infection status (Z21); exposure to HIV virus (Z20.6); inconclusive serologic evidence of HIV (R75).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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