G40.301
BillableGeneralized idiopathic epilepsy and epileptic syndromes, not intractable, with status epilepticus
HCC Category Mapping
V28HCC 201 — Seizure Disorders and Convulsions
0.262V24HCC 79 — Seizure Disorders and Convulsions
0.244ESRDHCC 79 — Seizure Disorders and Convulsions
0.000RxHCCHCC 164 — Seizure Disorders, Non-Intractable Epilepsy
0.000What This Code Means
A generalized epilepsy that affects the entire brain from the start and is controllable with medication, but the patient is currently experiencing status epilepticus.
Coding Tips
- •The '0' in the fourth character indicates this is idiopathic (no known cause) generalized epilepsy
- •Status epilepticus in a normally controlled epilepsy may indicate medication non-compliance or a new triggering factor that should be investigated
Clinical Significance
This code captures generalized idiopathic epilepsy with status epilepticus in a patient whose seizures are normally medication-responsive. Generalized epilepsy involves both hemispheres from seizure onset, distinct from focal epilepsy. Status epilepticus in this context may indicate medication non-compliance, a new trigger, or intercurrent illness complicating an otherwise controlled condition.
Documentation Requirements
- ✓Documentation of generalized epilepsy (bilateral hemispheric onset from the start)
- ✓Idiopathic designation confirmed (no structural, metabolic, or immune cause identified)
- ✓Active status epilepticus with onset time, type (convulsive vs. absence), and treatment
- ✓Documentation that the epilepsy is normally not intractable (well-controlled)
- ✓Investigation into precipitating factors for the status epilepticus episode
- ✓Emergency treatment protocol and response documentation
Commonly Confused Codes
G40.309 — Same type WITHOUT status epilepticus; stable controlled stateG40.311 — Same type, intractable, with status epilepticus; drug-resistant versionG40.001 — FOCAL idiopathic epilepsy with status epilepticus; focal rather than generalized onsetG40.401 — Other generalized epilepsy with status epilepticus; not idiopathicR56.01 — Complex febrile convulsions; febrile seizures in children, not epilepsy
Code Hierarchy
└G40Epilepsy and recurrent seizures└G40.3Generalized idiopathic epilepsy and epileptic syndromes└G40.30Generalized idiopathic epilepsy and epileptic syndromes, not intractable└G40.301Generalized idiopathic epilepsy and epileptic syndromes, not intractable, with status epilepticus
└G40.301Generalized idiopathic epilepsy and epileptic syndromes, not intractable, with status epilepticus