G448 – Sound field audiometry (infants and children) - technical component
OHIP Diagnostic & Therapeutic Procedures Code — DIAGNOSTIC AND THERAPEUTIC PROCEDURES · Schedule of Benefits
Sound field audiometry is an advanced diagnostic hearing test for infants and children. G448 represents the technical component of this service. Payment Rules and Notes: - Exclusivity: The amount payable is reduced to nil if any claim is submitted for G525, G441 or G526 rendered to the patient on the same day (). - Hospital Setting: The technical component of G448A when rendered in a hospital is payable at 94.68% of the listed fee (). - Technical Requirements: The physician claiming the technical component must have the necessary training and experience and maintain documentation on quality assurance processes ().
When to Use
- Use G448 when performing sound field audiometry in an office setting for patients aged 29 days to 15 years inclusive.
- Bill this code when you are providing the technical component of the sound field test independently of a formal consultation or assessment that would trigger G525, G441, or G526.
Common Pitfalls
- Submitting G448 on the same day as G525, G441, or G526 will result in an automatic rejection or nil payment due to the exclusivity rules.
- Failing to apply the 94.68% fee reduction when the service is performed within a hospital facility will lead to claim adjustments during reconciliation.
Billing Tips
- Ensure your billing software is configured to automatically apply the hospital-based reduction factor if you frequently perform this test in a hospital outpatient clinic.
Effective: April 1, 2026
J. Diagnostic and Therapeutic Procedures
DIAGNOSTIC AND THERAPEUTIC PROCEDURES
Diagnostic
Diagnostic and Therapeutic Procedures
Service is for infants and children. Per <SectionPages>GP2</SectionPages>, an infant is 29 days to less than 2 years, and a child is 2 years to 15 years inclusive.
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