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ICD-10-CM Codes Browse (Tabular) Diagnostic External Drug Neoplasm

Q90 – Down syndrome

Overview

Coding Notes

Active
Non-billable / Non-specific, not valid for HIPAA-covered transactions

Additional

code(s) to identify any associated physical conditions and degree of intellectual disabilities (F70-F79)

Child Codes

Trisomy 21, nonmosaicism (meiotic nondisjunction)
Trisomy 21, mosaicism (mitotic nondisjunction)
Trisomy 21, translocation
Down syndrome, unspecified

Sibling Codes

Trisomy 18 and Trisomy 13
Other trisomies and partial trisomies of the autosomes, not elsewhere classified
Monosomies and deletions from the autosomes, not elsewhere classified
Balanced rearrangements and structural markers, not elsewhere classified
Turner's syndrome
Other sex chromosome abnormalities, female phenotype, not elsewhere classified
Other sex chromosome abnormalities, male phenotype, not elsewhere classified
Other chromosome abnormalities, not elsewhere classified

View in Tabular

Code Title
Q00-Q99 Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
Q90-Q99 Chromosomal abnormalities, not elsewhere classified (Q90-Q99)
Q90 Down syndrome
Use Additional
code(s) to identify any associated physical conditions and degree of intellectual disabilities (F70-F79)

Q90.0 Trisomy 21, nonmosaicism (meiotic nondisjunction)
Q90.1 Trisomy 21, mosaicism (mitotic nondisjunction)
Q90.2 Trisomy 21, translocation
Q90.9 Down syndrome, unspecified