ICD-10-CM > C00-D49 > C51-C58 > C51 C51 Malignant neoplasm of vulva Non-Billable/Non-Specific Type 1 Excludes carcinoma in situ of vulva (D07.1) Codes C51.0Malignant neoplasm of labium majusC51.1Malignant neoplasm of labium minusC51.2Malignant neoplasm of clitorisC51.8Malignant neoplasm of overlapping sites of vulvaC51.9Malignant neoplasm of vulva, unspecified