Squamous cell carcinoma skin/ unsp lower limb, including hip

This code signifies a malignant neoplasm originating from the squamous cells of the epidermis, specifically located on any part of an unspecified lower limb, including the hip. This aggressive form of skin cancer can invade surrounding tissues and has the potential to metastasize if not treated.

Apply this code when documentation confirms a diagnosis of squamous cell carcinoma affecting the skin of the lower extremity, and the specific laterality (left or right) is not documented. This is appropriate for biopsy results, pathology reports, or physician notes explicitly stating squamous cell carcinoma of an unspecified lower limb or hip.

• Ensure the pathology report or physician documentation clearly specifies "squamous cell carcinoma" and not another type of skin cancer.
• Only use this code when laterality (left or right) of the lower limb is truly unspecified in the medical record. If laterality is documented, a more specific code should be chosen.
• Always sequence this code as the primary diagnosis when it is the reason for the encounter, such as for excision or treatment planning.