M93.051
BillableAcute on chronic slipped upper femoral epiphysis, unstable (nontraumatic), right hip
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is M93.051 an HCC code?
No. M93.051 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
M93.051 is the ICD-10-CM diagnosis code for acute on chronic slipped upper femoral epiphysis, unstable (nontraumatic), right hip. A condition where the growth plate at the top of the right thighbone has been slipping chronically and then suddenly worsens with acute instability, causing increased hip pain and functional impairment. M93.051 sits in the ICD-10-CM chapter for diseases of the musculoskeletal system and connective tissue (m00-m99), within the section covering chondropathies (m91-m94).
M93.051 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 code requires documentation of both chronic history and acute worsening; ensure both components are clearly stated.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for M93.051 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •This code requires documentation of both chronic history and acute worsening; ensure both components are clearly stated
- •The 'acute on chronic' designation is critical - verify the patient has prior history of slipped capital femoral epiphysis