All codes
G428
G428 – Hess screen examination - professional component
OHIP Diagnostic & Therapeutic Procedures Code — DIAGNOSTIC AND THERAPEUTIC PROCEDURES · Schedule of Benefits
The professional component of a Hess screen examination. The professional component is the physician's service of interpretation and reporting for a diagnostic test. The corresponding technical component is claimed separately using fee code G855. As per general rules, professional components must be personally rendered by the physician and cannot be delegated.
When to Use
- Use G428 when you personally interpret and document the results of a Hess screen to evaluate ocular motility and binocular vision deficits.
- Claim this code specifically for the professional interpretation component when the technical performance of the test is billed under G855.
Common Pitfalls
- Do not bill G428 if you have not personally reviewed and interpreted the screen, as this is a professional component that cannot be delegated to technical staff.
- Avoid billing G428 in isolation without the corresponding technical component G855, as this often triggers an audit or rejection for incomplete diagnostic service reporting.
Billing Tips
- Ensure your clinical notes include a formal interpretation of the Hess screen findings to support the professional component claim during a potential audit.
Provider Fee$6.85
Effective: April 1, 2025
Category
J. Diagnostic and Therapeutic Procedures
Subcategory
DIAGNOSTIC AND THERAPEUTIC PROCEDURES
Service Type
Diagnostic
Code Classes
Diagnostic and Therapeutic Procedures
Ready to bill this code?
SnapBill makes OHIP billing simple — auto-filled codes, validation, and batch submission.