Q590A – Basic Flu Shot - fee for visit premium
OHIP Critical Care Code — APPENDIX Q · Schedule of Benefits
The billing code Q590A is explicitly listed on page as 'Basic Flu Shot - fee for visit premium' under 'Miscellaneous Fees'. Its function as an immunization is consistent with its title and is further supported by its relationship to G590, which is listed as an immunization service under Diagnostic and Therapeutic Procedures (, ). The 'A' suffix signifies the service is performed by the physician (). The 'Q' prefix may denote a specific service location, such as a non-professional setting, as seen with other 'Q' prefix special visit premiums ().
When to Use
- Use Q590A as the visit premium when administering an influenza vaccine to a patient in your office, provided the primary purpose of the visit is the immunization.
- Claim Q590A in conjunction with G590 to capture both the professional fee for the injection and the visit premium for the immunization encounter.
Common Pitfalls
- Do not bill Q590A for patients residing in long-term care facilities, as this premium is bundled into the W010 monthly management fee.
- Avoid billing Q590A if the patient is already present for a comprehensive assessment or another major procedure where the visit premium is considered inclusive or redundant.
Billing Tips
- Always pair Q590A with G590 on the same claim to ensure the full value of the immunization service is captured, as Q590A acts as the premium for the visit itself.
Effective: April 1, 2026
AQ. Appendix Q
APPENDIX Q
Procedure
Diagnostic and Therapeutic Procedures
The information for this code is explicitly listed on page as 'Basic Flu Shot - fee for visit premium'. It is presumed to be an immunization service, consistent with its title and similar to G590, from which further details are inferred based on general rules.
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