ICD-10 Code G40.41 – Other generalized epilepsy and epileptic syndromes, intractable (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G40.41 – Other generalized epilepsy and epileptic syndromes, intractable
What it is
Use this code for generalized epilepsy or an epileptic syndrome that does not fit a more specific category and is documented as intractable. It indicates seizures affecting both sides of the brain and not adequately controlled.
Clinical signs
Clinical features vary; refer to documentation. You may see recurrent generalized seizures, loss of awareness, or other syndrome-specific findings, with persistent seizures despite appropriate management.
When to use this code
Assign G40.41 when the record clearly states a generalized epilepsy or epileptic syndrome and also documents that it is intractable or refractory. Use it for established diagnoses, not for a single unexplained seizure or a suspected seizure disorder. Check documentation if the seizure type or control status is unclear.
Do not use for
Do not use this code for localized or focal epilepsy, or when the chart does not support intractability. If the provider documents a different epilepsy subtype or a seizure without confirmed epilepsy, choose the more accurate code.
Coding tip
Confirm both the generalized epilepsy diagnosis and the intractable status in the provider’s note before coding.