| Full description | Whole chromosome trisomy, nonmosaicism (meiotic nondisjunction) |
| Billable | Yes |
| Chapter | Chapter 17: Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1) |
| Section | Chromosomal abnormalities, not elsewhere classified (Q90-Q99) |
| Parent code | Q92 — Oth trisomies and partial trisomies of the autosomes, NEC |