G366

G366 – Testing of arrhythmia inducibility by acute administration of anti-arrhythmic or adrenergic drugs

OHIP Diagnostic & Therapeutic Procedures Code — DIAGNOSTIC AND THERAPEUTIC PROCEDURES · Schedule of Benefits

Testing of arrhythmia inducibility by acute administration of anti-arrhythmic or adrenergic drugs. Note: G366 is not eligible for payment for the use of isoproterenol for arrhythmia induction when rendered with G261 and/or G259.

When to Use

Use G366 when performing pharmacological provocation testing, such as isoproterenol infusion, to assess for inducible arrhythmias during an electrophysiology study.
Use this code when administering specific anti-arrhythmic agents to test the inducibility of a patient's clinical tachycardia in a controlled laboratory setting.

Common Pitfalls

Billing G366 in conjunction with G261 or G259 when using isoproterenol will trigger an automatic rejection due to the explicit restriction in the Schedule of Benefits.
Claiming G366 as a standalone procedure without clear documentation of the pharmacological induction protocol will lead to audit recovery.

Billing Tips

Ensure the pharmacological induction is clearly distinct from the primary electrophysiology procedure (G261/G259) to justify the separate fee, provided isoproterenol is not the agent used.

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Provider Fee$148.50

Surgical Assistant Fee$74.25

Effective: April 1, 2025

Show CPI inflation

Since Apr 2004, this fee has increased 0.0% vs 57.0% CPI inflation

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