ICD-10-CM > M00-M99 > M80-M85 > M85 > M85.8 > M85.86 M85.86 Other specified disorders of bone density and structure, lower leg Non-Billable/Non-Specific Codes M85.861Other specified disorders of bone density and structure, right lower legM85.862Other specified disorders of bone density and structure, left lower legM85.869Other specified disorders of bone density and structure, unspecified lower leg