G842 – Hepatitis B (HB)
OHIP Diagnostic & Therapeutic Procedures Code — DIAGNOSTIC AND THERAPEUTIC PROCEDURES · Schedule of Benefits
Payable for the administration of the Hepatitis B (HB) vaccine. This service is intended to be billed in addition to an appropriate visit fee. If the immunization is the sole reason for the visit, add G700 instead of a separate visit code; G700 is only payable once per patient per day. The immunization service may not be insured under some conditions; refer to Appendix A of the Schedule of Benefits for details. This is a delegable procedure as per and .
When to Use
- Use G842 in addition to an assessment code (e.g., A007) when the patient presents for a medical issue and receives the Hepatitis B vaccine during the same encounter.
- Use G842 in combination with G700 when the patient presents exclusively for the Hepatitis B vaccine administration and no other assessment or consultation is performed.
Common Pitfalls
- Billing G700 alongside an assessment code (e.g., A007) will result in a rejection of the premium, as G700 is only payable when the procedure is the sole reason for the visit.
- Failing to verify if the specific patient's Hepatitis B vaccination is insured under Appendix A, as OHIP does not cover all indications for this vaccine.
Billing Tips
- Unlike many other procedure codes, G842 is explicitly permitted to be billed on the same day as counselling codes like K013 or K033, providing an exception to standard billing restrictions.
Effective: April 1, 2026
J. Diagnostic and Therapeutic Procedures
DIAGNOSTIC AND THERAPEUTIC PROCEDURES
Procedure
Diagnostic and Therapeutic Procedures, Delegated Procedure
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