ICD-10-CM > M00-M99 > M65-M67 > M67 > M67.9 > M67.96 M67.96 Unspecified disorder of synovium and tendon, lower leg Non-Billable/Non-Specific Codes M67.961Unspecified disorder of synovium and tendon, right lower legM67.962Unspecified disorder of synovium and tendon, left lower legM67.969Unspecified disorder of synovium and tendon, unspecified lower leg