All ICD10 Codes

G45

Non-Billable
ChapterG00–G99
Rankcategory
Description

Transient cerebral ischemic attacks and related syndromes

About ICD-10-CM code G45

G45 is the ICD-10-CM diagnosis code for Transient cerebral ischemic attacks and related syndromes. It sits in G00-G99 Diseases of the Nervous System, within Episodic and paroxysmal disorders (G40-G47). G45 is not billable on its own, coders must choose one of its more specific child codes instead.

Use a more specific code (7 billable)
G45.0Vertebro-basilar artery syndromeG45.1Carotid artery syndrome (hemispheric)G45.2Multiple and bilateral precerebral artery syndromesG45.3Amaurosis fugaxG45.4Transient global amnesiaG45.8Other transient cerebral ischemic attacks and related syndromesG45.9Transient cerebral ischemic attack, unspecified
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 6: Diseases of the Nervous System (G00-G99).

CH6 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Instructional Notes

Excludes1(Not coded here. Use a different code.)
  • neonatal cerebral ischemia (P91.0)
  • transient retinal artery occlusion (H34.0-)

Clinical Hierarchy

BillableHas subcodes
CH6Diseases of the nervous system (G00-G99)
G40-G47Episodic and paroxysmal disorders (G40-G47)
G45Transient cerebral ischemic attacks and related syndromesNot billable
G45.0Vertebro-basilar artery syndromeBillable
G45.1Carotid artery syndrome (hemispheric)Billable
G45.2Multiple and bilateral precerebral artery syndromesBillable
G45.3Amaurosis fugaxBillable
G45.4Transient global amnesiaBillable
G45.8Other transient cerebral ischemic attacks and related syndromesBillable
G45.9Transient cerebral ischemic attack, unspecifiedBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to G45:

chapterCH6
Diseases of the nervous system (G00-G99)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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