Q90.9
BillableDown syndrome, unspecified
Q90.9 is the ICD-10-CM code for Down syndrome, unspecified. It is a billable, specific code valid for reimbursement.
Q00-Q99 Congenital malformations, deformations and chromosomal abnormalities
What this means — in plain language
MedlinePlus · NIHWhat is Down syndrome? Down syndrome is a condition in which a person has an extra chromosome or an extra piece of a chromosome. This extra copy changes how a baby's body and brain develop. It can cause both mental and physical challenges during their lifetime. Even though people with Down syndrome might act and look similar, each person has different abilities. What causes Down syndrome? Chromosomes are tiny…
Read more about Down Syndrome at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Includes
- •Trisomy 21 NOS
Conditions mapped to this code
MedlinePlus · NIHPlain-language health-topic references grounded in MedlinePlus (NIH/NLM).
Benefits & assistance programs
Federal & state- AABD Cash Assistance›
- ACL Assistive TechnologyADMINISTRATION FOR COMMUNITY LIVING (ACL)›
- ACL Assistive Technology State Grants for Protection and AdvocacyADMINISTRATION FOR COMMUNITY LIVING (ACL)›
- ACL Centers for Independent LivingADMINISTRATION FOR COMMUNITY LIVING (ACL)›
- ACL Independent Living State GrantsADMINISTRATION FOR COMMUNITY LIVING (ACL)›
- Adult Day Care›
- Adult Day Care›
- Adult Day Care›
- Adult Day Care›
- Adult Day Care›
- Adult Day Care›
- Adult Day Care Services›
Assistance programs whose eligibility maps to this condition's category. Informational only — eligibility is determined by the administering agency.
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
Look up another ICD-10 code or condition