ICD-10-CM > C00-D49 > C43-C44 > C44 > C44.4 C44.4 Other and unspecified malignant neoplasm of skin of scalp and neck Non-Billable/Non-Specific Codes C44.40Unspecified malignant neoplasm of skin of scalp and neckC44.41Basal cell carcinoma of skin of scalp and neckC44.42Squamous cell carcinoma of skin of scalp and neckC44.49Other specified malignant neoplasm of skin of scalp and neck