M87.0 - Idiopathic aseptic necrosis of bone
M87.06 - Idiopathic aseptic necrosis of tibia and fibula
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