Skin

T-C44 denotes malignant neoplasms arising in the skin, covering all topographical sites of cutaneous tissue. This includes basal-cell carcinoma, squamous-cell carcinoma, malignant melanoma and other rare skin cancers, with sub-codes specifying locations such as the lip, eyelid, ear, trunk, limbs or unspecified skin. The classification aids in uniform reporting and epidemiologic tracking of skin tumors.