Basal cell carcinoma of skin of scalp and neck

This code signifies a malignant neoplasm originating from the basal cells of the epidermis, specifically located on the scalp or neck. Basal cell carcinoma is the most common type of skin cancer, characterized by slow growth and rare metastasis.

Use this code when documentation confirms a pathological diagnosis of basal cell carcinoma affecting the skin of the scalp or neck. This diagnosis is typically established through biopsy and subsequent histopathological examination.

• Ensure the documentation clearly specifies the anatomical site as either scalp or neck.
• Distinguish from squamous cell carcinoma (C44.42-) and melanoma (C43.4) of the same sites.
• Code any associated complications or subsequent treatments, such as excision or Mohs surgery, separately.