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Q90 Down syndrome
BackQ90.0Trisomy 21, nonmosaicism (meiotic nondisjunction)CategoryQ90.1Trisomy 21, mosaicism (mitotic nondisjunction)CategoryQ90.2Trisomy 21, translocationCategoryQ90.9Down syndrome, unspecifiedCategory
Category
Q90
Down syndrome
CODING RULE
Use additional code: code(s) to identify any associated degree of intellectual disabilities (F70-F79)
Code also: associated physical condition(s), such as atrioventricular septal defect (Q21.2-)
Code also: associated physical condition(s), such as atrioventricular septal defect (Q21.2-)
- Chapter
- XVII · Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders
- Section
- Q90-Q99
- Valid from
Source
CMS ICD-10-CM Tabular List, edition FY2026.