ICD-10-CM Q90: Down syndrome

ICD-10-CM Diagnosis Code (2025)

Official Description for Q90

Down syndrome

Coding Notes & Guidelines for Q90

Use Additional Code

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

Inclusion Terms

Trisomy 21 NOS

Code Also

associated physical condition(s), such as atrioventricular septal defect (Q21.2-)

Child Codes (More Specific Codes for Q90):

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

About ICD-10-CM Code Q90 (Down syndrome)

ICD-10-CM code Q90 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM Q90 became effective on October 1, 2024.

This page provides detailed information about Q90 - Down syndrome. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Down syndrome.