ICD-10-CM > G00-G99 > G40-G47 G40-G47 Episodic and paroxysmal disorders Codes G40Epilepsy and recurrent seizuresG43MigraineG44Other headache syndromesG45Transient cerebral ischemic attacks and related syndromesG46Vascular syndromes of brain in cerebrovascular diseasesG47Sleep disorders