M87.86 - Other osteonecrosis, tibia and fibula M87.8 - Other osteonecrosis M87.86 - Other osteonecrosis, tibia and fibula
M87.861 - Other osteonecrosis, right tibia M87.862 - Other osteonecrosis, left tibia M87.863 - Other osteonecrosis, unspecified tibia M87.864 - Other osteonecrosis, right fibula M87.865 - Other osteonecrosis, left fibula M87.869 - Other osteonecrosis, unspecified fibula