G313 – Electrocardiogram - professional component
OHIP Diagnostic & Therapeutic Procedures Code — DIAGNOSTIC AND THERAPEUTIC PROCEDURES · Schedule of Benefits
The professional component for a twelve-lead electrocardiogram (ECG). This service is only eligible for payment if it includes a written interpretation. Payment is not provided for routine pre-operative screening or for patients without symptoms, signs, or an indication supported by current clinical practice guidelines, unless specific risk factors or clinical indications are present.
When to Use
- Use G313 when a patient presents with new cardiac symptoms, such as chest pain or palpitations, requiring an ECG for diagnostic assessment.
- Use G313 for pre-operative clearance in patients undergoing non-cardiac surgery who possess specific cardiac risk factors like hypertension, diabetes, or established vascular disease.
- Use G313 to monitor patients with known cardiorespiratory disease or dysrhythmias when a change in clinical status warrants a new tracing.
Common Pitfalls
- Billing G313 for routine pre-operative screening in asymptomatic patients undergoing low-risk procedures, such as cataract surgery, will result in audit rejection.
- Failure to document a formal written interpretation in the patient chart is a primary cause for recovery of funds during an OHIP audit.
- Billing G313 alongside G310 for the same patient encounter is redundant and will lead to claim rejection.
Billing Tips
- Ensure the clinical indication for the ECG is clearly documented in the chart to justify the medical necessity beyond routine screening.
- When billing G313, ensure the written interpretation is signed and dated to satisfy the mandatory documentation requirement for the professional component.
Effective: April 1, 2026
J. Diagnostic and Therapeutic Procedures
DIAGNOSTIC AND THERAPEUTIC PROCEDURES
Diagnostic
Diagnostic and Therapeutic Procedures
must include written interpretation
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