ICD-10-CM > C00-D49 > C50-C50 > C50 > C50.1 > C50.12 C50.12 Malignant neoplasm of central portion of breast, male Non-Billable/Non-Specific Codes C50.121Malignant neoplasm of central portion of right male breastC50.122Malignant neoplasm of central portion of left male breastC50.129Malignant neoplasm of central portion of unspecified male breast