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ICD-10-CM
ICD-10-CM codes
Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
Q90-Q99
Q90
ICD-10-CM code "Q90": Down syndrome (2024)
Overview
ICD-10 Code
Q90
Description
Down syndrome
Hierarchy
Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
Chromosomal abnormalities, not elsewhere classified (Q90-Q99)
Down syndrome (Q90)
Billable status
Non billable code
Excludes
Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
Type 2
inborn errors of metabolism (E70-E88)
Chromosomal abnormalities, not elsewhere classified (Q90-Q99)
Type 2
mitochondrial metabolic disorders (E88.4-)
Down syndrome (Q90)
Includes
Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
Chromosomal abnormalities, not elsewhere classified (Q90-Q99)
Down syndrome (Q90)
Subcategories
Trisomy 21, nonmosaicism (meiotic nondisjunction) (Q90.0)
Trisomy 21, mosaicism (mitotic nondisjunction) (Q90.1)
Trisomy 21, translocation (Q90.2)
Down syndrome, unspecified (Q90.9)