ICD-10-CM > C00-D49 > C50-C50 > C50 > C50.9 > C50.92 C50.92 Malignant neoplasm of breast of unspecified site, male Non-Billable/Non-Specific Codes C50.921Malignant neoplasm of unspecified site of right male breastC50.922Malignant neoplasm of unspecified site of left male breastC50.929Malignant neoplasm of unspecified site of unspecified male breast