G40.84 (KCNQ2-related epilepsy) is an umbrella ICD-10-CM medical diagnosis code in the Diseases of the nervous system chapter. It identifies cases of kcnq2-related epilepsy for clinical documentation, billing and epidemiological tracking.

ICD-10-CM · Category

G40.84 — KCNQ2-related epilepsy

Chapter G00-G99: Diseases of the nervous system

Need plain-language info on this diagnosis?

Ask GoDavaii AI about KCNQ2-related epilepsy

Sub-codes under G40.84

Related diagnoses

G40.80Other epilepsy G40.81Lennox-Gastaut syndrome G40.82Epileptic spasms G40.83Dravet syndrome G40.89Other seizures

Common questions about G40.84 (KCNQ2-related epilepsy)

What does ICD-10 code G40.84 mean?

G40.84 is the ICD-10-CM 2025 code for KCNQ2-related epilepsy. 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 G40.84 a billable diagnosis code?

G40.84 is a category-level (umbrella) code rather than a billable specific code. For billing purposes, clinicians typically use a more specific sub-code under G40.84. Browse the sub-codes listed on this page.

Which ICD-10 chapter does G40.84 belong to?

G40.84 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 KCNQ2-related epilepsy?

For a plain-language explanation of KCNQ2-related epilepsy, ask GoDavaii's Health AI - it explains medical conditions in 22+ Indian languages, free, with no signup. Tap "Ask GoDavaii AI about KCNQ2-related epilepsy" 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 ↗