B20
✓ Billable
Human immunodeficiency virus [HIV] disease
ICD-10-CM · FY2026 · Certain Infectious and Parasitic Diseases
Code
B20
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Certain Infectious and Parasitic Diseases
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Official coding notes
From CMS's ICD-10-CM Tabular List.
Includes
- acquired immune deficiency syndrome [AIDS]
- AIDS-related complex [ARC]
- HIV infection, symptomatic
Excludes1 — never code together
- 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?
ICD-10-CM code B20 represents Human immunodeficiency virus [HIV] disease. It is a billable diagnosis code in the Certain Infectious and Parasitic Diseases chapter, effective October 1, 2025 – September 30, 2026.
Is B20 billable?
Yes. B20 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is B20 in?
B20 belongs to the Certain Infectious and Parasitic Diseases chapter (A00–B99) of ICD-10-CM.
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