ICD-10-CM > M00-M99 > M86-M90 > M89 > M89.5 > M89.56 M89.56 Osteolysis, lower leg Non-Billable/Non-Specific Codes M89.561Osteolysis, right lower legM89.562Osteolysis, left lower legM89.569Osteolysis, unspecified lower leg