Kodex

Code

Q90.0

Trisomy 21, nonmosaicism (meiotic nondisjunction)

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Hierarchy

Q00-Q99 Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- Q90-Q99 Chromosomal abnormalities, not elsewhere classified (Q90-Q99)
  - Q90 Down syndrome
    - Q90.0 Trisomy 21, nonmosaicism (meiotic nondisjunction)
    - Q90.1 Trisomy 21, mosaicism (mitotic nondisjunction)
    - Q90.2 Trisomy 21, translocation
    - Q90.9 Down syndrome, unspecified

Notes

Codes from this chapter are not for use on maternal records

Code Also

associated physical condition(s), such as atrioventricular septal defect (Q21.2-)
- Q21.2 Atrioventricular septal defect

Use Additional

code(s) to identify any associated degree of intellectual disabilities (F70-F79)
- F70-F79 Intellectual Disabilities (F70-F79)

Excludes 2

mitochondrial metabolic disorders (E88.4-)
- E88.4 Mitochondrial metabolism disorders

inborn errors of metabolism (E70-E88)
- E70-E88 Metabolic disorders (E70-E88)