G40.83Header code — not billable

Dravet syndrome

Chapter
6. Diseases of the nervous system
Category
G40
Effective date
October 1, 2026

Related codes in category G40

Frequently asked questions

What is ICD-10 code G40.83?

G40.83 is an ICD-10-CM diagnosis code for Dravet syndrome.

Is G40.83 a billable code?

No. G40.83 is a category/header code, not billable on its own — use one of its more specific child codes instead.

What ICD-10-CM chapter is G40.83 in?

G40.83 falls under Chapter 6: Diseases of the nervous system.

When did G40.83 become effective?

G40.83 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to G40.83?

G40.83 belongs to category G40, which includes 12 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.