ICD-10 Code: Q90.1 – Trisomy 21, mosaicism (mitotic nondisjunction)

ICD-10 code Q90.1 corresponds to Trisomy 21, mosaicism (mitotic nondisjunction). This code is classified under the chapter Q90 Down syndrome, which is part of the Q90-Q99: Chromosomal abnormalities, not elsewhere classified category.

The parent chapter is Congenital malformations, deformations and chromosomal abnormalities.