Question: Encounter notes indicate that a patient suffers from epilepsy that is not intractable with grand mal seizures on awakening. How many diagnosis codes do I need for this patient, and which ones? Kentucky Subscriber Answer: You’ll actually only need a single diagnosis code for this patient — but you’ll need some more information in order to choose the correct code. Do this: Go back and check the notes to see if there is an indication of status epilepticus. Then choose from the following diagnosis codes: Alternate terms alert: There is a litany of alternate terms beneath the G40.4- (Other generalized epilepsy and epileptic syndromes) descriptor, first among them “Epilepsy with grand mal seizures on awakening.” Per ICD-10, the other epileptic conditions you should report with a G40.4- code are: