ICD-10-CM > M00-M99 > M65-M67 > M67 > M67.3 > M67.31 M67.31 Transient synovitis, shoulder Non-Billable/Non-Specific Codes M67.311Transient synovitis, right shoulderM67.312Transient synovitis, left shoulderM67.319Transient synovitis, unspecified shoulder