G45Header code — not billable
Transient cerebral ischemic attacks and related syndromes
- Chapter
- 6. Diseases of the nervous system
- Category
- G45
- Effective date
- October 1, 2026
Related codes in category G45
G45.0Vertebro-basilar artery syndromeYesG45.1Carotid artery syndrome (hemispheric)YesG45.2Multiple and bilateral precerebral artery syndromesYesG45.3Amaurosis fugaxYesG45.4Transient global amnesiaYesG45.8Oth transient cerebral ischemic attacks and related syndYesG45.9Transient cerebral ischemic attack, unspecifiedYes
Frequently asked questions
What is ICD-10 code G45?
G45 is an ICD-10-CM diagnosis code for Transient cerebral ischemic attacks and related syndromes.
Is G45 a billable code?
No. G45 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 G45 in?
G45 falls under Chapter 6: Diseases of the nervous system.
When did G45 become effective?
G45 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to G45?
G45 belongs to category G45, which includes 7 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.