Z21
BillableAsymptomatic human immunodeficiency virus infection status
Asymptomatic human immunodeficiency virus [HIV] infection status
Status
Billable / Specific
Block
Z20-Z29
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- HIV positive NOS
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Code First
The underlying condition must be sequenced before this code
- Human immunodeficiency virus [HIV] disease complicating pregnancy, childbirth and the puerperium, if applicable (O98.7-)
Also Known As / Clinical Terms
SNOMED CT
- Human immunodeficiency virus 1 infection40780007
- Human immunodeficiency virus I infection40780007
- HIV 2 infection79019005
- Human immunodeficiency virus II infection79019005
- Asymptomatic HIV infection91947003
- Asymptomatic human immunodeficiency virus infection91947003
- Asymptomatic HIV infection in pregnancy91948008
- Asymptomatic human immunodeficiency virus infection in pregnancy91948008
- HIV detected165816005
- HIV positive165816005
- Human immunodeficiency virus (HIV) positive165816005
- Human immunodeficiency virus detected165816005
- Human immunodeficiency virus positive165816005
- HIV CDC stage finding385353004
- Human immunodeficiency virus Centers for Disease Control and Prevention stage finding385353004
- HIV EIA test positive406109008
- HIV ELISA test positive406109008
- Human immunodeficiency virus detected by enzyme-linked immunosorbent assay406109008
- Human immunodeficiency virus enzyme-linked immunosorbent assay test positive406109008
- History of asymptomatic human immunodeficiency virus infection432218001
- Copies of human immunodeficiency virus ribonucleic acid above reference range442662004
- Increased human immunodeficiency virus (HIV) viral load442662004
- Human immunodeficiency virus (HIV) carrier699433000
- Human immunodeficiency virus carrier699433000
- Human immunodeficiency virus antibody detected713742005
- Human immunodeficiency virus antibody positive713742005
- Reactive for Human immunodeficiency virus antibody713742005
- HIV 2 antibody positive and HIV 1 antibody cross-reactivity719789000
- Human immunodeficiency virus 2 antibody detected and Human immunodeficiency virus 1 antibody cross-reactivity719789000
- Human immunodeficiency virus 2 antibody positive and Human immunodeficiency virus 1 antibody cross-reactivity719789000
- Human immunodeficiency disease complicating pregnancy, childbirth and the puerperium721166000
- Human immunodeficiency virus complicating pregnancy childbirth and the puerperium721166000
- Viral load increased879967006
- HIV-CDC stage 01003681006
- Human immunodeficiency virus Centers for Disease Control and Prevention stage 01003681006
- Analyte not reportable due to high human immunodeficiency virus antibody471841000124105
- Analyte not reported due to high HIV (human immunodeficiency virus) Ab (antibody)471841000124105
- Analyte not reported due to high HIV (human immunodeficiency virus) antibody471841000124105
- Asymptomatic human immunodeficiency virus A1 infection90681000119107
- Asymptomatic human immunodeficiency virus A2 infection90691000119105
Frequently Asked Questions
What is ICD-10 code Z21?
ICD-10-CM code Z21 represents "Asymptomatic human immunodeficiency virus [HIV] infection status". It is a billable/specific code that can be used on a claim.
Is Z21 a billable code?
Yes, Z21 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is Z21 in?
Z21 is in Chapter 22: Factors Influencing Health Status and Contact With Health Services (codes Z00-Z99).
What codes cannot be used with Z21?
Z21 has Excludes1 notes indicating codes that cannot be used together with it, including: acquired immunodeficiency syndrome (B20); contact with human immunodeficiency virus [HIV] (Z20.6); exposure to human immunodeficiency virus [HIV] (Z20.6); and 2 more.
What SNOMED CT codes does Z21 map to?
Z21 maps to 18 SNOMED CT concepts: 471841000124105, 91947003, 91948008, 90681000119107, 90691000119105, and 13 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for Z21?
Z21 is linked to 2 UMLS Concept Unique Identifiers: C0476550, C4759637. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.