AutoICD API

Z21

Billable

Asymptomatic human immunodeficiency virus infection status

Asymptomatic human immunodeficiency virus [HIV] infection status

Status

Billable / Specific

Block

Z20-Z29

ICD-11 Mapping

1 equivalent

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

ICD-11 Equivalents(1)

ICD-11 Equivalents

View full mapping

Corresponding ICD-11 codes from the WHO crosswalk mapping

1C62.0HIV disease clinical stage 1 without mention of tuberculosis or malariaequivalentPrimary
Also Known As / Clinical Terms(85)

SNOMED CT

UMLS

Clinical Terms

  • Human immunodeficiency virus Centers for Disease Control and Prevention stage finding
  • Human immunodeficiency virus enzyme-linked immunosorbent assay test positive
  • Analyte not reportable due to high human immunodeficiency virus antibody
  • HIV 2 antibody positive and HIV 1 antibody cross-reactivity
  • Human immunodeficiency virus (HIV) carrier
  • Human immunodeficiency virus positive
  • HIV 2 infection
  • Human immunodeficiency virus detected
  • Asymptomatic human immunodeficiency virus A2 infection
  • HIV positive
  • HIV ELISA test positive
  • Human immunodeficiency virus antibody detected
  • Increased human immunodeficiency virus (HIV) viral load
  • HIV positive NOS
  • Human immunodeficiency virus (HIV) positive
  • Asymptomatic human immunodeficiency virus A1 infection
  • Human immunodeficiency virus 2 antibody detected and Human immunodeficiency virus 1 antibody cross-reactivity
  • Human immunodeficiency virus Centers for Disease Control and Prevention stage 0
  • Asymptomatic HIV infection
  • Human immunodeficiency virus I infection
  • Asymptomatic human immunodeficiency virus infection in pregnancy
  • Asymptomatic HIV infection in pregnancy
  • HIV-CDC stage 0
  • History of asymptomatic human immunodeficiency virus infection
  • Asymptomatic human immunodeficiency virus infection
  • Human immunodeficiency virus carrier
  • Human immunodeficiency virus 2 antibody positive and Human immunodeficiency virus 1 antibody cross-reactivity
  • Human immunodeficiency virus 1 infection
  • Human immunodeficiency virus detected by enzyme-linked immunosorbent assay
  • Copies of human immunodeficiency virus ribonucleic acid above reference range
  • Viral load increased
  • Human immunodeficiency disease complicating pregnancy, childbirth and the puerperium
  • Analyte not reported due to high HIV (human immunodeficiency virus) Ab (antibody)
  • HIV EIA test positive
  • Human immunodeficiency virus complicating pregnancy childbirth and the puerperium
  • HIV detected
  • Analyte not reported due to high HIV (human immunodeficiency virus) antibody
  • HIV CDC stage finding
  • Human immunodeficiency virus II infection
  • Human immunodeficiency virus antibody positive
  • Reactive for Human immunodeficiency virus antibody
Frequently Asked Questions
What is the ICD-10 code for asymptomatic human immunodeficiency virus infection status?

The ICD-10-CM code for asymptomatic human immunodeficiency virus infection status is Z21. The full clinical description is "Asymptomatic human immunodeficiency virus [HIV] infection status". Z21 is a billable/specific code that can be used on insurance claims and medical billing.

What does ICD-10 code Z21 mean?

ICD-10-CM code Z21 represents “Asymptomatic human immunodeficiency virus [HIV] infection status”. It is classified under Chapter 22: Factors Influencing Health Status and Contact With Health Services and 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.

How does Z21 relate to ICF functioning codes?

ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like asymptomatic human immunodeficiency virus infection status affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.

What is the ICD-11 equivalent of Z21?

Z21 maps to the ICD-11 code: 1C62.0 (HIV disease clinical stage 1 without mention of tuberculosis or malaria).

Automate ICD-10 Coding With AI

Send clinical text to the AutoICD API and get back structured ICD-10 codes with confidence scores. Integrates into any EHR or billing system in minutes.

Try FreeView API Docs

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.