G105 – Positional testing with electronystagmography (ENG) - professional component
OHIP Diagnostic & Therapeutic Procedures Code — DIAGNOSTIC AND THERAPEUTIC PROCEDURES · Schedule of Benefits
Positional testing with electronystagmography (ENG) - professional component. This service is the physician's interpretation and report of the ENG test. It is the professional counterpart to the technical component, G104. As defined in the Schedule of Benefits, the professional component is a class of service listed in a column headed 'P' or with 'professional component' listed opposite the service (see , ).
When to Use
- Use G105 to bill for the formal interpretation and written report of positional testing when the technical component has been performed by a technician or facility and billed under G104.
- Apply this code specifically when reviewing the electronystagmography (ENG) data to diagnose vestibular dysfunction in patients presenting with vertigo or dizziness.
Common Pitfalls
- Billing G105 without a corresponding G104 technical component on the same day or in the same episode of care will result in a rejection for missing the technical service.
- Submitting G105 without a formal, signed interpretation report in the patient's chart is a primary audit trigger for recovery of funds.
Billing Tips
- Ensure your documentation explicitly states the findings of the positional testing and your clinical conclusion, as the Ministry requires this specific report to justify the professional fee.
Effective: April 1, 2025
J. Diagnostic and Therapeutic Procedures
DIAGNOSTIC AND THERAPEUTIC PROCEDURES
Diagnostic
Diagnostic and Therapeutic Procedures
The medical record must include the formal report with the physician's interpretation of the test results.
All insured services must be documented in appropriate records that establish: 1. an insured service was provided; 2. the service for which the account is submitted is the service that was rendered; and 3. the service was medically necessary.
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