ICD-10 diagnosis code

Z21 Asymptomatic human immunodeficiency virus [HIV] infection status

Z21 is the ICD-10 code for Asymptomatic human immunodeficiency virus [HIV] infection status. It is a three-character category that is not subdivided further. It belongs to the block Z20–Z29 (Persons with potential health hazards related to communicable diseases) in Chapter XXI, Factors influencing health status and contact with health services.

Code type: Category (3 characters)
Chapter: XXI · Z00–Z99
Classification: WHO ICD-10, 2019 version

What Z21 includes

Conditions and terms that are coded here.

HIV positive NOS

What Z21 excludes

Conditions that look similar but belong under another code.

contact with or exposure to human immunodeficiency virus [HIV] Z20.6
human immunodeficiency virus [HIV] disease B20-B24
lhuman immunodeficiency virus [HIV] disease complicating pregnancy, childbirth and the puerperium O98.7
laboratory evidence of human immunodeficiency virus [HIV] R75

Z21 in national editions

Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.

SwedenICD-10-SE

Z21Asymtomatisk infektion med humant immunbristvirus [HIV]

Z21.9Asymtomatisk infektion med humant immunbristvirus [HIV]

NorwayICD-10-NO

Z21Symptomfri bærer av humant immunsviktvirus (hiv)

DenmarkICD-10-DK

DZ21Asymptomatisk hiv-infektion

DZ219Asymptomatisk hiv-infektion UNS

FinlandICD-10-FI

Z21Oireeton HIV-infektio

GermanyICD-10-GM

Z21Asymptomatische HIV-Infektion [Humane Immundefizienz-Virusinfektion]

FranceICD-10-FR

Z21Infection asymptomatique par le virus de l'immunodéficience humaine [VIH]

NetherlandsICD-10-NL

Z21status van asymptomatische infectie met Humaan Immunodeficiëntievirus [HIV]

United StatesICD-10-CM

Z21Asymptomatic human immunodeficiency virus [HIV] infection status

Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.

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