ICD-10 Code G40.119 – Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, intractable, without status epilepticus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G40.119 – Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, intractable, without status epilepticus
What it is
This code identifies a focal, symptom-related epilepsy syndrome with simple partial seizures that do not progress to status epilepticus and are described as intractable. Use it when the record clearly documents persistent seizure disorder with this specific pattern.
Clinical signs
Simple partial seizures usually preserve awareness and may cause focal motor, sensory, autonomic, or psychic symptoms. Clinical features vary; refer to documentation, and confirm that the seizures are described as intractable.
When to use this code
Use G40.119 when the provider documents localization-related epilepsy or epileptic syndrome with simple partial seizures and states it is intractable. Apply it when there is no status epilepticus and the note supports a focal seizure disorder rather than a generalized epilepsy.
If the chart only says “seizures” or does not specify intractability, check documentation before coding. You should also confirm the seizure type and whether the condition is an epileptic syndrome, not a single isolated event.
Do not use for
Do not use this code for generalized epilepsy, seizure disorders without focal features, or cases with status epilepticus. If the record does not support simple partial seizures or intractability, check documentation.
Coding tip
Look for both the seizure type and the intractable qualifier in the provider’s wording before assigning G40.119.