ICD-10-CM > G00-G99 > G40-G47 > G40 > G40.9 > G40.91 G40.91 Epilepsy, unspecified, intractable Non-Billable/Non-Specific Applicable To Intractable seizure disorder NOS Codes G40.911Epilepsy, unspecified, intractable, with status epilepticusG40.919Epilepsy, unspecified, intractable, without status epilepticus