ICD-10-CM > C00-D49 > C43-C44 > C44 > C44.0 C44.0 Other and unspecified malignant neoplasm of skin of lip Non-Billable/Non-Specific Type 1 Excludes malignant neoplasm of lip (C00.-) Codes C44.00Unspecified malignant neoplasm of skin of lipC44.01Basal cell carcinoma of skin of lipC44.02Squamous cell carcinoma of skin of lipC44.09Other specified malignant neoplasm of skin of lip