ICD-10-CM · Chapter 21 · Z00–Z99
Z21
Asymptomatic human immunodeficiency virus [HIV] infection status
Factors influencing health status and contact with health services
Quick facts
- Code
- Z21
- Type
- Billable code
- ICD-10-CM chapter
- Chapter 21 — Factors influencing health status and contact with health services
- Category
- Z21
- Specificity
- 3 characters
How coders use this code
ICD-10-CM Z21 is a billable, fully specified code, so it can be reported directly on a claim to document a diagnosis of asymptomatic human immunodeficiency virus [hiv] infection status. Coders assign it when the chart documentation supports this level of detail, always matching to the most specific code available and verifying against the chapter-specific guidelines published annually by NCHS/CMS.
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