ICD-10 Code D04.7 – Carcinoma in situ of skin of lower limb, including hip (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D04.7 – Carcinoma in situ of skin of lower limb, including hip
What it is
This code identifies a noninvasive skin cancer confined to the epidermis on the lower limb, including the hip. It means malignant cells are present but have not invaded deeper tissue.
Clinical signs
Clinical features vary; refer to documentation. You may see a localized suspicious skin lesion, often described as a persistent scaly, crusted, or irregular area, with pathology confirming carcinoma in situ.
When to use this code
Use D04.7 when the provider documents carcinoma in situ affecting skin of the leg, thigh, ankle, foot, or hip region. Apply it when pathology or clinical assessment supports a noninvasive malignant lesion at this site. Verify laterality is not required for this code.
Do not use for
Do not use this code for invasive skin cancer, uncertain behavior lesions, or benign growths. If the documentation only says “skin cancer” without site or in situ status, check documentation.
Coding tip
Code from the documented anatomic site and confirm the phrase “in situ” before assigning D04.7.