D04.70
BillableCarcinoma in situ of skin of unspecified lower limb, including hip
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is D04.70 an HCC code?
No. D04.70 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
D04.70 is the ICD-10-CM diagnosis code for carcinoma in situ of skin of unspecified lower limb, including hip. Abnormal skin cells on an unspecified leg or hip area that have the potential to become cancer but have not yet invaded deeper layers of skin. D04.70 sits in the ICD-10-CM chapter for neoplasms (c00-d49), within the section covering in situ neoplasms (d00-d09).
D04.70 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 the specific lower limb location cannot be determined; if laterality is known, use D04.71 or D04.72.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for D04.70 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.