R25.9
BillableUnspecified abnormal involuntary movements
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is R25.9 an HCC code?
No. R25.9 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
R25.9 is the ICD-10-CM diagnosis code for unspecified abnormal involuntary movements. Unspecified abnormal involuntary movements when the exact type or nature of the involuntary muscle movement cannot be determined. R25.9 sits in the ICD-10-CM chapter for symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (r00-r99), within the section covering symptoms and signs involving the nervous and musculoskeletal systems (r25-r29).
R25.9 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.
This is a less specific code; attempt to obtain more clinical detail to assign a more specific R25 code.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for R25.9 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •This is a less specific code; attempt to obtain more clinical detail to assign a more specific R25 code
- •Document any associated symptoms or triggers that may help clarify the diagnosis