ICD-10-CM > G00-G99 > G40-G47 > G40 > G40.8 > G40.83 G40.83 Dravet syndrome Non-Billable/Non-Specific Applicable To Polymorphic epilepsy in infancy (PMEI)Severe myoclonic epilepsy in infancy (SMEI) Codes G40.833Dravet syndrome, intractable, with status epilepticusG40.834Dravet syndrome, intractable, without status epilepticus