L57.8
BillableOther skin changes due to chronic exposure to nonionizing radiation
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is L57.8 an HCC code?
No. L57.8 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
L57.8 is the ICD-10-CM diagnosis code for other skin changes due to chronic exposure to nonionizing radiation. Various skin changes and damage that result from long-term exposure to non-ionizing radiation (such as ultraviolet light), not classified in other specific categories. L57.8 sits in the ICD-10-CM chapter for diseases of the skin and subcutaneous tissue (l00-l99), within the section covering radiation-related disorders of the skin and subcutaneous tissue (l55-l59).
L57.8 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 for chronic sun damage effects not captured by more specific L57 codes.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for L57.8 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Use this code for chronic sun damage effects not captured by more specific L57 codes
- •Document the type of nonionizing radiation exposure and duration of exposure