2026 ICD-10-CM Diagnosis Code G45.3Amaurosis fugax

ICD-10-CM Codes›G00–G99›G40-G47›G45

ICD-10-CM G45.3
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

G45.3 is a billable ICD-10-CM diagnosis code for amaurosis fugax. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Transient cerebral ischemia.

Code Identity

ICD-10-CM Code
G45.3
Billable Status
Yes — Valid for Submission
Code Describes
Amaurosis fugax
Short Description
Amaurosis fugax
Same as the full description in the CMS dataset.
Parent Code
G45
Transient cerebral ischemic attacks and related syndromes

Code Classification

ChapterG00–G99Diseases of the nervous system
SectionG40-G47Episodic and paroxysmal disorders
CategoryG45Transient cerebral ischemic attacks and related syndromes
This CodeG45.3Amaurosis fugax

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acute cerebral ischemia
  • Amaurosis
  • Amaurosis fugax
  • Amaurosis fugax of left eye
  • Amaurosis fugax of right eye
  • Carotid territory transient ischemic attack

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Amaurosis(acquired) (congenital)
      • fugax

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR NVS012
Transient cerebral ischemia
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Amaurosis Fugax

    transient complete or partial monocular blindness due to retinal ischemia. this may be caused by emboli from the carotid artery (usually in association with carotid stenosis) and other locations that enter the central retinal artery. (from adams et al., principles of neurology, 6th ed, p245)

Patient EducationClinical

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Convert G45.3 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
362.34 Transient arterial occlu
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About G45.3Overview

Is G45.3 (Transient cerebral ischemic attacks and related syndromes) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report amaurosis fugax on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What is the ICD-9 equivalent of G45.3?

Under the General Equivalence Mappings, amaurosis fugax converts to ICD-9-CM 362.34 (transient arterial occlu). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.