ICD-10-CM Book 2026 Edition
Chapters ICD-10-CM Book Table of Content /
chapter 17 Q00-QA0 Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders /
Q90-Q99 Chromosomal abnormalities, not elsewhere classified /
Q90 Down syndrome
Billable ICD-10-CM Code Q90.0
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Q90.0
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Trisomy 21, nonmosaicism (meiotic nondisjunction)
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