M87.0 - Idiopathic aseptic necrosis of bone
M87.05 - Idiopathic aseptic necrosis of pelvis and femur
M87.050 - Idiopathic aseptic necrosis of pelvis
M87.051 - Idiopathic aseptic necrosis of right femur
M87.052 - Idiopathic aseptic necrosis of left femur
M87.059 - Idiopathic aseptic necrosis of unspecified femur