--- M87.061 Idiopathic aseptic necrosis of right tibia

--- M87.062 Idiopathic aseptic necrosis of left tibia

--- M87.063 Idiopathic aseptic necrosis of unspecified tibia

--- M87.064 Idiopathic aseptic necrosis of right fibula

--- M87.065 Idiopathic aseptic necrosis of left fibula

--- M87.066 Idiopathic aseptic necrosis of unspecified fibula