U.S. ICD-10-CM · FY 2027

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.

Code definition

Official description

B20

Human immunodeficiency virus [HIV] disease

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where B20 sits

  1. 1

    Chapter 1

    Certain infectious and parasitic diseases (A00-B99)

  2. 2

    Section

    Human immunodeficiency virus [HIV] disease (B20)

  3. 3

    Category B20

    Human immunodeficiency virus [HIV] disease

  4. 4

    Code B20

    Human immunodeficiency virus [HIV] disease

Documentation details

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.

Transparency

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.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

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.

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