G40.90 (Epilepsy, unspecified, not intractable) is an umbrella ICD-10-CM medical diagnosis code in the Diseases of the nervous system chapter. It identifies cases of epilepsy, unspecified, not intractable for clinical documentation, billing and epidemiological tracking.

ICD-10-CM · Category

G40.90 — Epilepsy, unspecified, not intractable

Chapter G00-G99: Diseases of the nervous system

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Sub-codes under G40.90

G40.901Epilepsy, unsp, not intractable, with status epilepticusG40.909Epilepsy, unsp, not intractable, without status epilepticus

Related diagnoses

G40.91Epilepsy, unspecified, intractable

Common questions about G40.90 (Epilepsy, unspecified, not intractable)

What does ICD-10 code G40.90 mean?
G40.90 is the ICD-10-CM 2025 code for Epilepsy, unspecified, not intractable. ICD-10-CM is the medical coding system used by clinicians, hospitals and insurers worldwide to classify diseases and conditions in a standard way.
Is G40.90 a billable diagnosis code?
G40.90 is a category-level (umbrella) code rather than a billable specific code. For billing purposes, clinicians typically use a more specific sub-code under G40.90. Browse the sub-codes listed on this page.
Which ICD-10 chapter does G40.90 belong to?
G40.90 belongs to the chapter "Diseases of the nervous system" (codes G00-G99). ICD-10-CM organises codes into 22 chapters by body system or condition type, which helps clinicians navigate related diagnoses.
Where can I get plain-language information about Epilepsy, unspecified, not intractable?
For a plain-language explanation of Epilepsy, unspecified, not intractable, ask GoDavaii's Health AI - it explains medical conditions in 22+ Indian languages, free, with no signup. Tap "Ask GoDavaii AI about Epilepsy, unspecified, not intractable" above to get a personalised answer.

Source: ICD-10-CM 2025 (Centers for Medicare & Medicaid Services, public domain). Codes valid from October 1, 2024. CMS source ↗