ICD-10-CM Code For Down Syndrome: Group Overview
The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group Q90 includes diagnoses related to Down syndrome, including nonmosaic trisomy 21, mosaic trisomy 21, and translocation trisomy 21, covering the spectrum of chromosomal abnormalities associated with chromosome 21. These ICD-10-CM diagnosis codes are used to document congenital chromosomal abnormalities that impact development and multiple organ systems, capturing disease severity, associated congenital anomalies, and clinical complexity relevant to this group. Accurate coding within the ICD-10-CM Q90 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.
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ICD-10-CM Q90: Down Syndrome Overview
The ICD-10-CM Q90 group includes congenital chromosomal abnormalities characterized by trisomy of chromosome 21 and related variants. These diagnoses target genetic and developmental conditions that affect multiple organ systems, including cardiac, gastrointestinal, and neurologic function. Accurate coding is important to reflect clinical complexity and to support appropriate reimbursement and care planning.