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Q90.9 Down syndrome, unspecified
BackQ90Down syndromeCategory4 →Q90.0Trisomy 21, nonmosaicism (meiotic nondisjunction)CategoryQ90.1Trisomy 21, mosaicism (mitotic nondisjunction)CategoryQ90.2Trisomy 21, translocationCategoryQ90.9Down syndrome, unspecifiedCategory
CategoryCODABLE
Q90.9
Down syndrome, unspecified
EXAMPLES
Trisomy 21 NOS
- Chapter
- XVII · Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders
- Section
- Q90-Q99
- Valid from
Source
CMS ICD-10-CM Tabular List, edition FY2026.