M67.9 - Unspecified disorder of synovium and tendon
M67.93 - Unspecified disorder of synovium and tendon, forearm
M67.931 - Unspecified disorder of synovium and tendon, right forearm
M67.932 - Unspecified disorder of synovium and tendon, left forearm
M67.939 - Unspecified disorder of synovium and tendon, unspecified forearm