| C50.61 | Malignant neoplasm of axillary tail of breast, female | NON-BILLABLE CODE |
| C50.611 | Malignant neoplasm of axillary tail of right female breast | BILLABLE CODE |
| C50.612 | Malignant neoplasm of axillary tail of left female breast | BILLABLE CODE |
| C50.619 | Malignant neoplasm of axillary tail of unspecified female breast | BILLABLE CODE |
| C50.62 | Malignant neoplasm of axillary tail of breast, male | NON-BILLABLE CODE |
| C50.621 | Malignant neoplasm of axillary tail of right male breast | BILLABLE CODE |
| C50.622 | Malignant neoplasm of axillary tail of left male breast | BILLABLE CODE |
| C50.629 | Malignant neoplasm of axillary tail of unspecified male breast | BILLABLE CODE |
