Squamous cell carcinoma skin/ left lower limb, including hip

This code signifies a malignant neoplasm originating from the squamous cells of the epidermis, specifically located on the left lower extremity, which includes the hip region. This type of skin cancer is characterized by abnormal, uncontrolled growth of squamous cells and can be invasive.

Apply this code when documentation confirms a biopsy-proven squamous cell carcinoma affecting any part of the left lower limb, including the hip. This is appropriate for initial diagnoses, subsequent encounters for treatment, or surveillance of this specific malignancy.

• Ensure the pathology report explicitly states "squamous cell carcinoma" and specifies the left lower limb or hip.
• Distinguish from basal cell carcinoma (C44.71-) and melanoma (C43.7-) of the same anatomical site.
• Always sequence this code as the primary diagnosis when it is the reason for the encounter, followed by any relevant treatment or complication codes.