G40.8 - Other epilepsy and recurrent seizures
G40.81 - Lennox-Gastaut syndrome
G40.811 - Lennox-Gastaut syndrome, not intractable, with status epilepticus
G40.812 - Lennox-Gastaut syndrome, not intractable, without status epilepticus
G40.813 - Lennox-Gastaut syndrome, intractable, with status epilepticus
G40.814 - Lennox-Gastaut syndrome, intractable, without status epilepticus