Non-Billable / Non-Specific Code
ICD-10-CM G45 is the diagnosis code for Transient cerebral ischemic attacks and related syndromes. This code falls under the section "Episodic and paroxysmal disorders" within Chapter 6 — Diseases of the nervous system (G00-G99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as G45. They are mutually exclusive:
Understanding where G45 sits in the ICD-10-CM classification helps ensure proper coding:
No, G45 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
G45 is the ICD-10-CM diagnosis code for "Transient cerebral ischemic attacks and related syndromes". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
G45 is located in Section G40-G47 — "Episodic and paroxysmal disorders" within Chapter 6 of the ICD-10-CM Tabular List.
G45 has 7 sub-code(s) that provide more specific detail: G45.0, G45.1, G45.2, G45.3, G45.4 and more.
Use G45 when the patients documented diagnosis matches "Transient cerebral ischemic attacks and related syndromes" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Transient cerebral ischemic attacks and related syndromes is G45.
No, G45 is non-billable. Use a more specific sub-code for primary diagnosis billing.
G45 is in Chapter 6 of the ICD-10-CM Tabular List.
Type 1 Excludes for G45 include: neonatal cerebral ischemia (P91.0); transient retinal artery occlusion (H34.0-).
Yes, G45 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.