Malignant melanoma of scalp and neck

This code identifies a primary malignant neoplasm originating from melanocytes, specifically located on the skin of the scalp or neck. This aggressive form of skin cancer is characterized by uncontrolled growth of pigment-producing cells.

Apply this code for documented cases of primary malignant melanoma definitively diagnosed as arising from the scalp or neck region. Supporting documentation should include pathology reports confirming melanoma and clearly specifying the anatomical site.

• Differentiate from secondary malignant melanoma or melanoma in situ; this code is for primary invasive melanoma.
• Ensure the documentation specifies "scalp" or "neck" as the primary site; avoid using for other head and neck locations.
• Sequence as the primary diagnosis when the melanoma is the reason for the encounter.