ICD-10-CM > C00-D49 > C43-C44 > C44 > C44.8 C44.8 Other and unspecified malignant neoplasm of overlapping sites of skin Non-Billable/Non-Specific Codes C44.80Unspecified malignant neoplasm of overlapping sites of skinC44.81Basal cell carcinoma of overlapping sites of skinC44.82Squamous cell carcinoma of overlapping sites of skinC44.89Other specified malignant neoplasm of overlapping sites of skin