2026 ICD-10-CM Diagnosis Code G45Transient cerebral ischemic attacks and related syndromes
G45 is a non-billable ICD-10-CM category code for transient cerebral ischemic attacks and related syndromes, so it cannot be submitted on claims. Use a more specific code from this category instead, such as G45.0, G45.1, G45.2, and G45.3.
Code Identity
Code Classification
Specific Coding for Transient cerebral ischemic attacks and related syndromesOverview
Non-specific codes like G45 require more characters. Use one of these billable codes instead:
Use G45.0 for Vertebro-basilar artery syndrome
Use G45.1 for Carotid artery syndrome (hemispheric)
Use G45.2 for Multiple and bilateral precerebral artery syndromes
Use G45.3 for Amaurosis fugax
Use G45.4 for Transient global amnesia
Use G45.8 for Other transient cerebral ischemic attacks and related syndromes
Use G45.9 for Transient cerebral ischemic attack, unspecified
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Patient EducationClinical
Transient Ischemic Attack
A transient ischemic attack (TIA) is a stroke that lasts only a few minutes. It happens when the blood supply to part of the brain is briefly blocked. Symptoms of a TIA are like other stroke symptoms, but do not last as long. They happen suddenly, and include:
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Code HistoryHistory
Questions About G45Overview
What is the ICD-10 code for transient cerebral ischemic attacks and related syndromes?
G45 is the ICD-10-CM category for transient cerebral ischemic attacks and related syndromes, but it is a non-billable header: claims need a more specific code from this category, listed on this page.
Is G45 (Transient cerebral ischemic attacks and related syndromes) a billable code?
No. This is a category header that groups the codes for transient cerebral ischemic attacks and related syndromes, and headers cannot be submitted on claims. Claims for transient cerebral ischemic attacks and related syndromes need a more specific code from this category, such as G45.0, G45.1, and G45.2.
