Merkel cell carcinoma of right lower limb, including hip

This code signifies a malignant neuroendocrine tumor of the skin, specifically Merkel cell carcinoma, located on the right lower limb, which encompasses the hip region. This aggressive skin cancer originates from Merkel cells, which are found in the epidermis.

Apply this code when documentation confirms a diagnosis of Merkel cell carcinoma affecting any part of the patient's right lower extremity, including the hip. Supporting documentation should clearly specify the laterality and the histological confirmation of Merkel cell carcinoma.

• Ensure the pathology report explicitly states "Merkel cell carcinoma" and not another type of skin cancer.
• Verify laterality (right vs. left) and the specific anatomical site within the lower limb.
• Do not use this code for Merkel cell carcinoma of the trunk, upper limb, or unspecified sites.