C50 – Malignant neoplasm of breast

C50.0 Nipple and areola
C50.1 Central portion of breast
C50.2 Upper-inner quadrant of breast
C50.3 Lower-inner quadrant of breast
C50.4 Upper-outer quadrant of breast
C50.5 Lower-outer quadrant of breast
C50.6 Axillary tail of breast
C50.8 Overlapping lesion of breast
C50.9 Breast, unspecified