ICD-10 Code C44.70 – Unspecified malignant neoplasm of skin of lower limb, including hip (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C44.70 – Unspecified malignant neoplasm of skin of lower limb, including hip
What it is
C44.70 identifies a malignant skin tumor on the lower limb or hip when the site is known but the exact skin subtype is not specified. Use it for skin cancers documented in that region without further detail.
Clinical signs
Clinical features vary; refer to documentation. Typical skin cancer findings may include a persistent enlarging lesion, nonhealing ulcer, bleeding, crusting, or a changing pigmented or raised area on the lower limb or hip.
When to use this code
Use this code when the provider documents a malignant neoplasm of the skin on the leg, foot, thigh, or hip area and does not name a more specific type. It also fits when the record confirms malignancy but lacks histology or further skin site detail. Verify laterality and exact anatomic location if available.
Do not use for
Do not use for benign skin lesions, dysplastic nevi, or nonmalignant tumors. If the record identifies a specific skin cancer type or a more precise site, check documentation and code that diagnosis instead.
Coding tip
Choose C44.70 only after confirming the lesion is malignant and the documentation supports the lower limb or hip location.