Q90Down syndrome
ICD-10-CM category (non-billable header) code — part of Chromosomal abnormalities, not elsewhere classified (Q90-Q99)
Coding Notes
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-)
Subcategories (4)
- Q90.0 Trisomy 21, nonmosaicism (meiotic nondisjunction)
- Q90.1 Trisomy 21, mosaicism (mitotic nondisjunction)
- Q90.2 Trisomy 21, translocation
- Q90.9 Down syndrome, unspecified