ICD-10 Code G40.8 – Other epilepsy and recurrent seizures (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G40.8 – Other epilepsy and recurrent seizures
What it is
G40.8 identifies epilepsy or recurrent seizure disorder that does not fit a more specific ICD-10 epilepsy category. Use it when the record supports an epileptic seizure condition, but the subtype is not otherwise classified.
Clinical signs
Clinical features vary; refer to documentation. Typical records describe repeated unprovoked seizures, altered awareness, convulsions, or other epileptic events, with evaluation supporting a seizure disorder rather than an acute, provoked episode.
When to use this code
Use this code when the clinician documents epilepsy or recurrent seizures and does not specify a more exact type such as focal, generalized, or other named syndrome. It also fits when the chart confirms a chronic seizure disorder but the subtype remains unclear. Check documentation for seizure type, chronicity, and whether the episode is epileptic.
Do not use for
Do not use G40.8 for a single acute seizure, febrile seizure, or convulsion caused by another condition. If the record names a more specific epilepsy category, code that instead.
Coding tip
Assign the most specific epilepsy code available; if the provider only documents “other epilepsy” or recurrent seizures, G40.8 is appropriate.