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Down syndrome

Down syndrome

Q90.9
meiotic nondisjunctionQ90.0
mitotic nondisjunctionQ90.1
mosaicismQ90.1
translocationQ90.2

Source: official CMS/NCHS ICD-10-CM Index to Diseases and Injuries. Informational only.

Data current as of FY2026 CMS/NCHS release. Not affiliated with or endorsed by CMS, HHS, or NCHS.

ICD-10-CM

Diagnosis Codes Diagnosis Index External Causes Index Table of Drugs Table of Neoplasms Coding Guidelines

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ICD-10-PCS Procedure Codes HCPCS Level II Codes ICD-9-CM Diagnosis Codes ICD-9-CM Procedure Codes

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