ICD-10-CM > C00-D49 > C50-C50 > C50 > C50.2 C50.2 Malignant neoplasm of upper-inner quadrant of breast Non-Billable/Non-Specific Codes C50.21Malignant neoplasm of upper-inner quadrant of breast, femaleC50.211Malignant neoplasm of upper-inner quadrant of right female breastC50.212Malignant neoplasm of upper-inner quadrant of left female breastC50.219Malignant neoplasm of upper-inner quadrant of unspecified female breastC50.22Malignant neoplasm of upper-inner quadrant of breast, maleC50.221Malignant 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