G51.3Non-Billable (Header)Clonic hemifacial spasmChild CodesG51.31Clonic hemifacial spasm, rightG51.32Clonic hemifacial spasm, leftG51.33Clonic hemifacial spasm, bilateralG51.39Clonic hemifacial spasm, unspecifiedCode Hierarchy└G51Facial nerve disorders└G51.3Clonic hemifacial spasm└G51.3Clonic hemifacial spasm