C50.9 - Malignant neoplasm of breast of unspecified site
C50.91 - Malignant neoplasm of breast of unspecified site, female
C50.911 - Malignant neoplasm of unspecified site of right female breast
C50.912 - Malignant neoplasm of unspecified site of left female breast
C50.919 - Malignant neoplasm of unspecified site of unspecified female breast