ICD-10 Code G40.804 – Other epilepsy, intractable, without status epilepticus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G40.804 – Other epilepsy, intractable, without status epilepticus
What it is
This code identifies epilepsy that remains difficult to control despite treatment, but the patient is not in status epilepticus. Use it when the record specifies another epilepsy type that is intractable and does not describe an acute prolonged seizure emergency.
Clinical signs
Clinical features vary; refer to documentation. Commonly, the chart shows recurrent unprovoked seizures with persistent seizure activity despite appropriate therapy, and no mention of status epilepticus.
When to use this code
Use G40.804 when the provider documents “other epilepsy” and states it is intractable. It also fits when seizures continue despite treatment, but the note does not identify a more specific epilepsy subtype.
You should also confirm that status epilepticus is not present or documented. If the record gives a more specific epilepsy category, code that diagnosis instead.
Do not use for
Do not use this code for epilepsy with status epilepticus, or when the epilepsy type is specified by a different code. Check documentation if the note only says “seizures” without confirming epilepsy.
Coding tip
Verify both “intractable” and “without status epilepticus” in the provider record before assigning G40.804.