- Breast N63.0

-- Axillary Tail

--- Left N63.32

--- Right N63.31

-- Left

--- Lower Inner Quadrant N63.24

--- Lower Outer Quadrant N63.23

--- Overlapping Quadrants N63.25

--- Unspecified Quadrant N63.20

--- Upper Inner Quadrant N63.22

--- Upper Outer Quadrant N63.21

-- Right

--- Lower Inner Quadrant N63.14

--- Lower Outer Quadrant N63.13

--- Overlapping Quadrants N63.15

--- Unspecified Quadrant N63.10

--- Upper Inner Quadrant N63.12

--- Upper Outer Quadrant N63.11

-- Subareolar

--- Left N63.42

--- Right N63.41