G311 – Interpretation of telephone transmitted ECG rhythm strip - technical component
OHIP Diagnostic & Therapeutic Procedures Code — DIAGNOSTIC AND THERAPEUTIC PROCEDURES · Schedule of Benefits
Provides for the technical component for the interpretation of a telephone-transmitted electrocardiography (ECG) rhythm strip. The professional component is billed separately as G320. The technical component includes providing the premises, equipment, supplies, and personnel for the service. Per , payment for the technical component requires the physician to have the necessary training and experience and to maintain documentation of quality assurance processes. When rendered in a hospital, the fee for G311A is reduced to 86.10%.
When to Use
- Use G311 when you own or lease the transmission equipment and provide the technical infrastructure to receive and process a remote rhythm strip.
- Bill G311 in conjunction with G320 when you perform both the technical transmission receipt and the professional interpretation of the rhythm strip.
Common Pitfalls
- Billing G311 when the ECG is performed on hospital-owned equipment, as the hospital is responsible for the technical component in that setting.
- Failing to apply the 86.10% reduction when the service is rendered within a hospital facility, which triggers an automatic claim adjustment.
- Billing G311 without maintaining the required quality assurance documentation for the transmission equipment, which is a specific audit requirement under GP11.
Billing Tips
- Ensure your billing software is configured to automatically apply the hospital reduction if you frequently perform this service in both clinic and hospital settings.
- Always pair G311 with G320 on the same claim to ensure you are compensated for both the technical infrastructure and the professional interpretation.
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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