M61.532
BillableOther ossification of muscle, left forearm
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is M61.532 an HCC code?
No. M61.532 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
M61.532 is the ICD-10-CM diagnosis code for other ossification of muscle, left forearm. Abnormal bone-like tissue forming in the muscles of the left forearm (between elbow and wrist), causing stiffness and functional impairment. M61.532 sits in the ICD-10-CM chapter for diseases of the musculoskeletal system and connective tissue (m00-m99), within the section covering disorders of muscles (m60-m63).
M61.532 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.
Verify 'left' laterality and that the location is forearm, not upper arm or wrist.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for M61.532 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Verify 'left' laterality and that the location is forearm, not upper arm or wrist
- •Common complication of forearm trauma or compartment syndrome; review clinical documentation for context