ICD-10 Code C44.799 – Other specified malignant neoplasm of skin of left lower limb, including hip (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C44.799 – Other specified malignant neoplasm of skin of left lower limb, including hip
What it is
This code identifies a malignant skin tumor on the left lower limb, including the hip, when the record does not fit a more specific skin cancer code. Use it only when the documentation supports a malignant neoplasm of skin in that anatomic site.
Clinical signs
Clinical features vary; refer to documentation. Skin cancers may appear as a persistent lesion, nonhealing sore, changing growth, or pigmented or ulcerated area, but the exact diagnosis should be confirmed in the chart.
When to use this code
Use this code when the provider documents a malignant neoplasm of skin on the left lower limb or hip and the site is not better described by another ICD-10-CM code. It is appropriate for pathology-confirmed or clearly documented malignancy. If the note is vague, check documentation before assigning the code.
Do not use for
Do not use it for benign skin lesions, dysplastic nevi, or cancers on another body site. If the record specifies a different skin cancer type or a more exact location, code that instead.
Coding tip
Match the laterality and exact skin site in the pathology or provider note before you code C44.799.