ICD-10 Code C44.79 – Other specified malignant neoplasm of skin of lower limb, including hip (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C44.79 – Other specified malignant neoplasm of skin of lower limb, including hip
What it is
This code identifies a malignant skin tumor on the lower limb or hip that does not fit a more specific skin cancer category. Use it when the record clearly states a malignant neoplasm of skin in this location and specifies it as other or not otherwise classified.
Clinical signs
Typical findings include a suspicious skin lesion, such as a changing, nonhealing, ulcerated, or irregular growth. Clinical features vary; refer to documentation and pathology when available.
When to use this code
Use this code when the provider documents a malignant neoplasm of the skin on the lower leg, thigh, ankle, foot, or hip and does not name a more specific histology or site code. It is also appropriate when pathology or assessment supports a malignant skin lesion in this region but the exact subtype is not further defined. Check documentation if the note is ambiguous.
Do not use for
Do not use for benign skin lesions, carcinoma in situ, or malignant neoplasms of deeper soft tissue or bone. If the lesion is on a different body site or a more specific skin cancer code applies, choose that code instead.
Coding tip
Confirm both the anatomic site and the exact wording in the pathology or assessment before assigning C44.79.