G40.409
BillableOther generalized epilepsy and epileptic syndromes, not intractable, without 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 of a type other than idiopathic that is controllable with medication, and the patient is not currently in status epilepticus.
Coding Tips
- •Investigate and document the etiology of the 'other' generalized epilepsy for complete clinical documentation
- •Link this code to any secondary conditions that may have caused the epilepsy
Clinical Significance
Other generalized epilepsy without status epilepticus and not intractable represents a chronic seizure disorder involving both brain hemispheres that is adequately managed with antiepileptic medications. This condition requires ongoing neurological monitoring, medication management, and carries risks of breakthrough seizures that impact patient safety and quality of life.
Documentation Requirements
- ✓Specific type of generalized epilepsy identified (secondary cause such as brain injury, infection, tumor if known)
- ✓Statement confirming seizures respond to medication (not intractable)
- ✓Confirmation that status epilepticus is NOT present at the encounter
- ✓Current antiepileptic medication regimen and adherence
- ✓Seizure frequency and most recent seizure date
- ✓Any relevant EEG or neuroimaging findings
Commonly Confused Codes
G40.401 — Same epilepsy type but WITH status epilepticus; requires documentation of prolonged seizure activityG40.419 — Same epilepsy type without status epilepticus but INTRACTABLE; requires documentation of drug resistanceG40.309 — Generalized IDIOPATHIC epilepsy without status epilepticus; use when no secondary cause identifiedG40.909 — Epilepsy UNSPECIFIED; avoid this less specific code when documentation supports 'other generalized' typeR56.9 — Unspecified convulsions; use only for single seizure events without established epilepsy diagnosis
Code Hierarchy
└G40Epilepsy and recurrent seizures└G40.4Other generalized epilepsy and epileptic syndromes└G40.40Other generalized epilepsy and epileptic syndromes, not intractable└G40.409Other generalized epilepsy and epileptic syndromes, not intractable, without status epilepticus
└G40.409Other generalized epilepsy and epileptic syndromes, not intractable, without status epilepticus