B20 ICD-10-CM Code: Human immunodeficiency virus [HIV] disease
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Official description
B20Human immunodeficiency virus [HIV] disease
ICD-10-CM diagnosis code · United States clinical modification
Where B20 sits
- 1
Chapter 1
Certain infectious and parasitic diseases (A00-B99)
- 2
Section
Human immunodeficiency virus [HIV] disease (B20)
- 3
Category B20
Human immunodeficiency virus [HIV] disease
- 4
Code B20
Human immunodeficiency virus [HIV] disease
Notes for this code
Inclusion terms
No inclusion terms are listed for B20.
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
Excludes1
Conditions that should not be reported together with this code.
- asymptomatic human immunodeficiency virus [HIV] infection status (Z21)
- exposure to HIV virus (Z20.6)
- inconclusive serologic evidence of HIV (R75)
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for B20.
Source and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Frequently asked questions
What does ICD-10-CM code B20 mean?
B20 is the FY 2027 U.S. ICD-10-CM code for “Human immunodeficiency virus [HIV] disease.”
Is B20 a billable or specific ICD-10-CM code?
Yes. In the FY 2027 reference data used on this page, B20 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.
Where is B20 located in ICD-10-CM?
B20 is listed in Chapter 1, Certain infectious and parasitic diseases (A00-B99), within Human immunodeficiency virus [HIV] disease (B20) (B20–B20), under category B20, Human immunodeficiency virus [HIV] disease.
What coding notes are listed for B20?
No inclusion terms are listed for B20 in this reference record. Code-first instructions: Human immunodeficiency virus [HIV] disease complicating pregnancy, childbirth and the puerperium, if applicable (O98.7-). Additional-code instructions: code(s) to identify all manifestations of HIV infection. Excludes1 notes: asymptomatic human immunodeficiency virus [HIV] infection status (Z21); exposure to HIV virus (Z20.6); inconclusive serologic evidence of HIV (R75). No Excludes2 note is listed.