ICD-10-CM > C00-D49 > C50-C50 > C50 > C50.4 C50.4 Malignant neoplasm of upper-outer quadrant of breast Non-Billable/Non-Specific Codes C50.41Malignant neoplasm of upper-outer quadrant of breast, femaleC50.411Malignant neoplasm of upper-outer quadrant of right female breastC50.412Malignant neoplasm of upper-outer quadrant of left female breastC50.419Malignant neoplasm of upper-outer quadrant of unspecified female breastC50.42Malignant neoplasm of upper-outer quadrant of breast, maleC50.421Malignant neoplasm of upper-outer quadrant of right male breastC50.422Malignant neoplasm of upper-outer quadrant of left male breastC50.429Malignant neoplasm of upper-outer quadrant of unspecified male breast