ICD-10-CM > C00-D49 > C50-C50 > C50 > C50.2 > C50.22 C50.22 Malignant neoplasm of upper-inner quadrant of breast, male Non-Billable/Non-Specific Codes C50.221Malignant neoplasm of upper-inner quadrant of right male breastC50.222Malignant neoplasm of upper-inner quadrant of left male breastC50.229Malignant neoplasm of upper-inner quadrant of unspecified male breast