ICD-10 Code C44.791 – Other specified malignant neoplasm of skin of unspecified lower limb, including hip (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C44.791 – Other specified malignant neoplasm of skin of unspecified lower limb, including hip
What it is
This code identifies a malignant skin tumor on the lower limb or hip when the site is not further specified and the diagnosis does not fit a more specific skin cancer code. Use it for documented “other specified” malignant skin neoplasms.
Clinical signs
Clinical features vary; refer to documentation. Skin cancers may appear as a persistent lesion, nonhealing ulcer, bleeding spot, or changing pigmented or raised area on the lower limb or hip.
When to use this code
Use C44.791 when the provider documents a malignant neoplasm of skin in the lower limb or hip and does not identify a more specific anatomic site. It also fits cases described as “other specified” malignant skin cancer at that location. Check documentation if the pathology or note names a different primary site or a more specific skin cancer type.
Do not use for
Do not use this code for benign skin lesions, uncertain behavior tumors, or malignant neoplasms outside the lower limb or hip. Do not use it when the record supports a more specific ICD-10-CM skin cancer code.
Coding tip
Code the most specific documented skin site first; if the lower limb or hip is not specified further, C44.791 is appropriate.