M60.09
BillableInfective myositis, multiple sites
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is M60.09 an HCC code?
No. M60.09 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
M60.09 is the ICD-10-CM diagnosis code for infective myositis, multiple sites. A bacterial or viral infection of the muscle tissue affecting two or more different body sites simultaneously. M60.09 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).
M60.09 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.
Use this code only when myositis is documented in multiple anatomically distinct locations.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for M60.09 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Use this code only when myositis is documented in multiple anatomically distinct locations
- •Consider if separate codes for each site would be more appropriate based on documentation specificity