ICD-10-CM · Category
G40.A1 — Absence epileptic syndrome, intractable
Chapter G00-G99: Diseases of the nervous system
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Common questions about G40.A1 (Absence epileptic syndrome, intractable)
What does ICD-10 code G40.A1 mean?
G40.A1 is the ICD-10-CM 2025 code for Absence epileptic syndrome, 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.A1 a billable diagnosis code?
G40.A1 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.A1. Browse the sub-codes listed on this page.
Which ICD-10 chapter does G40.A1 belong to?
G40.A1 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 Absence epileptic syndrome, intractable?
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Source: ICD-10-CM 2025 (Centers for Medicare & Medicaid Services, public domain). Codes valid from October 1, 2024. CMS source ↗