G40.0
Non-billableLocalization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset
G40.0 is the ICD-10-CM code for Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset. It is a non-billable category code — use a more specific child code such as G40.00 for billing.
G00-G99 Diseases of the nervous system
What this means — in plain language
MedlinePlus · NIHEpilepsy is a brain disorder that causes people to have recurring seizures . The seizures happen when clusters of nerve cells, or neurons, in the brain send out the wrong signals. People may have strange sensations and emotions or behave strangely. They may have violent muscle spasms or lose consciousness. Epilepsy has many possible causes, including illness, brain injury, and abnormal brain development. In many…
Read more about Epilepsy at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Includes
- •Benign childhood epilepsy with centrotemporal EEG spikes
- •Childhood epilepsy with occipital EEG paroxysms
Medications indicated for this condition
FDA labeling- ValproateAnti-epileptic Agent [EPC]›
- Levetiracetam›
- TopiramateCytochrome P450 3A4 Inducers [MoA]›
- CarbamazepineMood Stabilizer [EPC]›
- LamotrigineAnti-epileptic Agent [EPC]›
- VigabatrinAnti-epileptic Agent [EPC]›
- AcetazolamideCarbonic Anhydrase Inhibitor [EPC]›
- fluorodeoxyglucose F18Radioactive Diagnostic Agent [EPC]›
- Lacosamide›
- OxcarbazepineAnti-epileptic Agent [EPC]›
- PhenytoinAnti-epileptic Agent [EPC]›
- Pregabalin›
Drugs whose FDA labeling lists this condition's category among its indications. Informational only — not a treatment recommendation or medical advice.
Conditions mapped to this code
MedlinePlus · NIHPlain-language health-topic references grounded in MedlinePlus (NIH/NLM).
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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