--- M87.071 Idiopathic aseptic necrosis of right ankle

--- M87.072 Idiopathic aseptic necrosis of left ankle

--- M87.073 Idiopathic aseptic necrosis of unspecified ankle

--- M87.074 Idiopathic aseptic necrosis of right foot

--- M87.075 Idiopathic aseptic necrosis of left foot

--- M87.076 Idiopathic aseptic necrosis of unspecified foot

--- M87.077 Idiopathic aseptic necrosis of right toe(s)

--- M87.078 Idiopathic aseptic necrosis of left toe(s)

--- M87.079 Idiopathic aseptic necrosis of unspecified toe(s)