ICD-10-CM > G00-G99 > G50-G59 > G51 G51 Facial nerve disorders Non-Billable/Non-Specific Includes disorders of 7th cranial nerve Codes G51.0Bell's palsyG51.1Geniculate ganglionitisG51.2Melkersson's syndromeG51.3Clonic hemifacial spasmG51.31Clonic hemifacial spasm, rightG51.32Clonic hemifacial spasm, leftG51.33Clonic hemifacial spasm, bilateralG51.39Clonic hemifacial spasm, unspecifiedG51.4Facial myokymiaG51.8Other disorders of facial nerveG51.9Disorder of facial nerve, unspecified