C50.9 - Malignant neoplasm of breast of unspecified site
C50.92 - Malignant neoplasm of breast of unspecified site, male
C50.921 - Malignant neoplasm of unspecified site of right male breast
C50.922 - Malignant neoplasm of unspecified site of left male breast
C50.929 - Malignant neoplasm of unspecified site of unspecified male breast