This group comprises preparations used in the treatment of epilepsy and related conditions (e.g. seizures).
Combined preparations are classified at separate 5th levels using the corresponding 50-series.
The group is subdivided according to chemical structure.

This group comprises antiepileptics, which cannot be classified in the preceding groups.
Fenfluramine indicated for the treatment of seizures associated with Dravet syndrome is classified here.
Gabapentin and pregabalin are classified in N02BF Gabapentinoids.