G40.812
BillableLennox-Gastaut syndrome, 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
Lennox-Gastaut syndrome, a severe childhood epilepsy with multiple seizure types that can be controlled with medication, not currently in a prolonged seizure state.
Coding Tips
- •This syndrome typically presents in early childhood with developmental delay and multiple seizure types
- •Document the specific seizure types observed (tonic, atonic, absence) to support the diagnosis
Clinical Significance
Lennox-Gastaut syndrome without status epilepticus and not intractable represents a rare presentation where this severe epilepsy syndrome is adequately controlled with medication. LGS typically involves multiple seizure types, characteristic EEG patterns, and cognitive impairment. Even when seizures are controlled, these patients require ongoing comprehensive care for developmental and neurological needs.
Documentation Requirements
- ✓Confirmed Lennox-Gastaut syndrome diagnosis
- ✓Documentation of seizure types (tonic, atonic, atypical absence)
- ✓EEG findings showing slow spike-and-wave pattern
- ✓Confirmation seizures are controlled (not intractable)
- ✓Absence of status epilepticus at the encounter
- ✓Cognitive and developmental assessment
- ✓Current medication regimen with response documentation
Commonly Confused Codes
G40.811 — LGS, not intractable, WITH status epilepticusG40.814 — LGS, INTRACTABLE, without status epilepticus; more common presentationG40.822 — Epileptic spasms without status epilepticus; distinct from LGSG40.802 — Other epilepsy without status epilepticus; less specificG40.409 — Other generalized epilepsy; use when LGS criteria not met
Code Hierarchy
└G40Epilepsy and recurrent seizures└G40.8Other epilepsy and recurrent seizures└G40.81Lennox-Gastaut syndrome└G40.812Lennox-Gastaut syndrome, not intractable, without status epilepticus
└G40.812Lennox-Gastaut syndrome, not intractable, without status epilepticus