G153 – Cortical evoked audiometry - technical component
OHIP Diagnostic & Therapeutic Procedures Code — APPENDIX F · Schedule of Benefits
Provides for the technical component of cortical evoked audiometry, which includes testing at a minimum of 4 frequencies in each ear. This service is specifically for cases required by the Workplace Safety and Insurance Board (WSIB). It corresponds to the professional component, G154. When this service is rendered in a hospital, the fee is adjusted to 94.68% of the listed value. This code is listed in Appendix F, which is provided for informational purposes only and is not part of the Schedule of Benefits under the Health Insurance Act.
When to Use
- Use G153 exclusively when performing the technical component of cortical evoked audiometry specifically requested by the WSIB for a claimant.
- Use G153 in conjunction with G154 when you are responsible for both the technical data acquisition and the professional interpretation for a WSIB-mandated assessment.
Common Pitfalls
- Billing G153 for non-WSIB patients will result in automatic rejection as this code is restricted to WSIB-required services.
- Submitting any other service code by the same physician on the same day as G153 will trigger a rejection due to the restrictive billing rules for this specific technical component.
- Failing to apply the 86.10% payment adjustment when the technical service is performed within a hospital setting is a frequent cause of claim reconciliation errors.
Billing Tips
- Ensure your records explicitly document the WSIB referral or requirement to satisfy audit criteria for Appendix F services.
- Always bill G153 and G154 together when you provide the complete service, ensuring the technical component is clearly delineated from the professional interpretation.
Effective: April 1, 2026
AF. Appendix F
APPENDIX F
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 upon request by the MOH that they maintain documentation that describes the process by which the physician monitors quality assurance in accordance with professional standards.
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