ICD-10 Code G40.101 – Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, not intractable, with status epilepticus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G40.101 – Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, not intractable, with status epilepticus
What it is
This code identifies focal symptomatic epilepsy with simple partial seizures, where the seizure focus is known and the condition is not intractable. It also documents status epilepticus, meaning prolonged or repeated seizures without return to baseline.
Clinical signs
Clinical features vary; refer to documentation. Typical focal simple partial seizures may involve preserved awareness with localized motor, sensory, autonomic, or psychic symptoms, and the record should support status epilepticus.
When to use this code
Use this code when the provider documents focal symptomatic epilepsy with simple partial seizures and explicitly states that it is not intractable. Assign it only when status epilepticus is also documented for the same condition.
You should support the code with clear neurologic documentation showing a focal seizure disorder rather than a generalized epilepsy diagnosis. Check documentation if the record does not specify seizure type, intractability, or status epilepticus.
Do not use for
Do not use this code for generalized seizures, epilepsy without status epilepticus, or cases documented as intractable. If the seizure type or severity is unclear, check documentation.
Coding tip
Verify all three elements in the note: focal symptomatic epilepsy, not intractable, and status epilepticus.