| Relevance | Code | Description |
|---|---|---|
| Q90.9 | Down syndrome, unspecified | |
| R29.721 | NIHSS score 21 | |
| Q90.2 | Trisomy 21, translocation | |
| Z3A.21 | 21 weeks gestation of pregnancy | |
| Q90.1 | Trisomy 21, mosaicism (mitotic nondisjunction) | |
| Q90.0 | Trisomy 21, nonmosaicism (meiotic nondisjunction) | |