G147 – Visual evoked response - professional component
OHIP Diagnostic & Therapeutic Procedures Code — DIAGNOSTIC AND THERAPEUTIC PROCEDURES · Schedule of Benefits
This service represents the professional component of a simple visual evoked response test. It covers the physician's work in interpreting the data acquired and providing a report. It is intended to be billed in conjunction with its corresponding technical component, G149. As per the General Preamble (, ), the professional component is a distinct class of service within the Schedule of Benefits. The service is listed under the Ophthalmology subsection of Diagnostic and Therapeutic Procedures.
When to Use
- Use G147 when you are providing the formal interpretation and written report for a visual evoked response test that was technically performed by a facility or technician billing G149.
- Bill G147 when you are the physician of record responsible for reviewing the waveform data to diagnose optic nerve or visual pathway pathology, distinct from the technical acquisition of the test.
Common Pitfalls
- Billing G147 without a corresponding G149 claim from the facility will trigger a rejection, as the professional component requires the technical component to be present in the system.
- Attempting to bill G147 for a test performed in your own office where you own the equipment and pay the staff is incorrect; you must bill the global fee if applicable, or ensure the technical component is billed separately by the appropriate entity.
Billing Tips
- Ensure your clinical documentation includes a signed, dated report of the interpretation, as this is the primary evidence required to justify the professional component fee during an audit.
Effective: April 1, 2025
J. Diagnostic and Therapeutic Procedures
DIAGNOSTIC AND THERAPEUTIC PROCEDURES
Diagnostic
Diagnostic and Therapeutic Procedures
The target page lists this as 'professional component'. The General Preamble () defines professional component as 'a class of service listed in the Schedule headed by a column listed “P” or with "professional component" listed opposite the service'.
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