ICD-10-CM > M00-M99 > M65-M67 > M67 > M67.9 > M67.93 M67.93 Unspecified disorder of synovium and tendon, forearm Non-Billable/Non-Specific Codes M67.931Unspecified disorder of synovium and tendon, right forearmM67.932Unspecified disorder of synovium and tendon, left forearmM67.939Unspecified disorder of synovium and tendon, unspecified forearm