G310 – Electrocardiogram - twelve lead - technical component
OHIP Diagnostic & Therapeutic Procedures Code — DIAGNOSTIC AND THERAPEUTIC PROCEDURES · Schedule of Benefits
This fee code covers the technical component of a twelve-lead electrocardiogram. This includes the physical act of attaching the leads, running the machine, and generating the tracing. It is distinct from the professional component (G313), which covers the interpretation of the results.
When to Use
- Use G310 when performing the technical acquisition of a 12-lead ECG in a clinic setting for a patient presenting with new chest pain, palpitations, or syncope.
- Use G310 for patients undergoing preoperative assessment for non-cardiac surgery who possess documented risk factors such as hypertension, diabetes, or established vascular disease.
Common Pitfalls
- Billing G310 for routine preoperative screening in asymptomatic, low-risk patients undergoing minor procedures like cataract surgery will result in audit recovery.
- Submitting G310 without a corresponding interpretation (G313) or clinical note justifying the necessity of the diagnostic test is a common documentation failure.
Billing Tips
- Ensure the technical component is only billed if your office owns or leases the ECG equipment and maintains the quality assurance records for the machine.
- If the ECG is performed within a hospital facility, remember that the payment will be automatically adjusted to 94.68% of the listed fee.
Effective: April 1, 2026
J. Diagnostic and Therapeutic Procedures
DIAGNOSTIC AND THERAPEUTIC PROCEDURES
Diagnostic
Diagnostic and Therapeutic Procedures
The physician submitting a claim for the technical component is responsible for the complete quality assurance process for all elements of the technical component of the service, including data acquisition, reporting, and record keeping. The physician must be able to demonstrate the above upon request by the MOH.
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