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G40.40

Non-billable

Other generalized epilepsy and epileptic syndromes, not intractable

G40.40 is the ICD-10-CM code for Other generalized epilepsy and epileptic syndromes, not intractable. It is a non-billable category code — use a more specific child code such as G40.401 for billing.

Status
Header (non-billable)
Chapter
G00-G99
Parent
G40.4
Subcodes
2
Edition
FY2026

G00-G99 Diseases of the nervous system

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What this means — in plain language

MedlinePlus · NIH

Epilepsy 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

  • •Other generalized epilepsy and epileptic syndromes without intractability
  • •Other generalized epilepsy and epileptic syndromes NOS

Medications indicated for this condition

FDA labeling

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 · NIH
EpilepsySeizures

Plain-language health-topic references grounded in MedlinePlus (NIH/NLM).

Benefits & assistance programs

Federal & state

Assistance programs whose eligibility maps to this condition's category. Informational only — eligibility is determined by the administering agency.

Frequently asked questions

What is ICD-10 code G40.40?
G40.40 is the ICD-10-CM code for "Other generalized epilepsy and epileptic syndromes, not intractable". It falls under G00-G99 Diseases of the nervous system.
Is G40.40 a billable code?
No — G40.40 is a non-billable header code. Use a more specific child code (such as G40.401) for billing.
What are the subcodes of G40.40?
G40.40 has 2 more specific child codes, including G40.401, G40.409.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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