ICD-10-CM · Chapter 17 · Q00–Q99
Q90.0
Trisomy 21, nonmosaicism (meiotic nondisjunction)
Congenital malformations, deformations and chromosomal abnormalities
Quick facts
- Code
- Q90.0
- Type
- Billable code
- ICD-10-CM chapter
- Chapter 17 — Congenital malformations, deformations and chromosomal abnormalities
- Category
- Q90 — Down syndrome
- Specificity
- 4 characters
How coders use this code
ICD-10-CM Q90.0 is a billable, fully specified code, so it can be reported directly on a claim to document a diagnosis of trisomy 21, nonmosaicism (meiotic nondisjunction). Coders assign it when the chart documentation supports this level of detail, always matching to the most specific code available and verifying against the chapter-specific guidelines published annually by NCHS/CMS.
Related codes in Q90
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