ICD-10-CM > M00-M99 > M86-M90 > M89 > M89.5 > M89.53 M89.53 Osteolysis, forearm Non-Billable/Non-Specific Codes M89.531Osteolysis, right forearmM89.532Osteolysis, left forearmM89.539Osteolysis, unspecified forearm