ICD-10 diagnosis code

Q90 Down syndrome

Q90 is the ICD-10 code for Down syndrome. It is a three-character category divided into 4 subcodes; use the subcode whenever the record supports that level of detail. It belongs to the block Q90–Q99 (Chromosomal abnormalities, not elsewhere classified) in Chapter XVII, Congenital malformations, deformations and chromosomal abnormalities.

Code type: Category (3 characters)
Chapter: XVII · Q00–Q99
Classification: WHO ICD-10, 2019 version

Subcodes of Q90

Q90 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

Q90Downs syndrom

DenmarkICD-10-DK

DQ90Downs syndrom

FinlandICD-10-FI

Q90Downin oireyhtymä

GermanyICD-10-GM

Q90Down-Syndrom

FranceICD-10-FR

Q90Syndrome de Down

NetherlandsICD-10-NL

Q90syndroom van Down

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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