ICD-10-CM > M00-M99 > M86-M90 > M87 > M87.8 > M87.85 M87.85 Other osteonecrosis, pelvis and femur Non-Billable/Non-Specific Codes M87.850Other osteonecrosis, pelvisM87.851Other osteonecrosis, right femurM87.852Other osteonecrosis, left femurM87.859Other osteonecrosis, unspecified femur