G43Header code — not billable

Migraine

Chapter
6. Diseases of the nervous system
Category
G43
Effective date
October 1, 2026

Related codes in category G43

Frequently asked questions

What is ICD-10 code G43?

G43 is an ICD-10-CM diagnosis code for Migraine.

Is G43 a billable code?

No. G43 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 G43 in?

G43 falls under Chapter 6: Diseases of the nervous system.

When did G43 become effective?

G43 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to G43?

G43 belongs to category G43, 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.