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Q90.0

Trisomy 21, nonmosaicism (meiotic nondisjunction)

Instruction Source: Q90.0

Trisomy 21, nonmosaicism (meiotic nondisjunction)

Instruction Source: Q90

Down syndrome

Instruction Source: Q90-Q99

Chromosomal abnormalities, not elsewhere classified (Q90-Q99)

Excludes 2 (Not Included Here)

  • mitochondrial metabolic disorders (E88.4-)
Instruction Source: Q00-QA1

Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders

Excludes 2 (Not Included Here)

  • inborn errors of metabolism (E70-E88)

Clinical Notes

  • Codes from this chapter are not for use on maternal records
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