G25.5
BillableOther chorea
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is G25.5 an HCC code?
No. G25.5 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
G25.5 is the ICD-10-CM diagnosis code for other chorea. Involuntary, irregular, flowing movements of the limbs caused by conditions such as Huntington's disease, lupus, or other systemic diseases. G25.5 sits in the ICD-10-CM chapter for diseases of the nervous system (g00-g99), within the section covering extrapyramidal and movement disorders (g20-g26).
G25.5 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.
Identify and code the underlying cause of chorea (e.g., Huntington's disease, systemic lupus erythematosus).
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for G25.5 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Identify and code the underlying cause of chorea (e.g., Huntington's disease, systemic lupus erythematosus)
- •Use this code when chorea is not drug-induced