OHIP Billing Guide🩺 ServicePublished 2026
A626

A626 OHIP Billing Code: Expert Management for Complex Allergies and Immunological Disorders

The A626 code allows allergy and immunology specialists to provide a repeat consultation for patients requiring reconsideration of their initial management plans, following a new referral.

For Ontario Physicians & Billing StaffOHIP Schedule of Benefits Reference105.25 CAD~4 min read

1What Is the A626 OHIP Code?

The A626 billing code is used for repeat consultations within the specialty of clinical immunology and allergy. This code allows specialists to see a patient for a second time regarding the same medical issue, provided there is a new written request from a referring physician, nurse practitioner, or dental surgeon.

In practice, this may involve patients whose initial treatment plans for conditions such as asthma or chronic urticaria have proven ineffective, or where adjustments to an immunotherapy regimen are necessary due to reactions. These repeat consultations are crucial for amending patient management plans based on new developments or treatment responses.

Common reasons for missing this billing opportunity include not obtaining a new written request or mistakenly believing repeat consultations are subject to frequency restrictions. Ensuring proper documentation of these elements is key to appropriate billing.

2Related Codes

CodeNameFrequencyDescription
A525Limited consultationN/AUsed for brief consultations in clinical immunology.
A625ConsultationN/AStandard full consultation in clinical immunology, allowing a thorough patient review.
C525Limited consultationN/ALimited consultation fee for hospital in-patients.
C625ConsultationN/AConsultation fee for comprehensive evaluations for hospital in-patients.

3Eligibility Requirements

A626 may be billed under the OHIP system when the service involves a repeat consultation at the request of a referral from a physician, nurse practitioner, or dental surgeon. Importantly, a new written referral is required for each occurrence. This code can be used without adhering to consultation frequency limits outlined in GP17. However, if payment requirements aren't met, payments may be adjusted to those for a general or specific assessment.

Virtual consultations are eligible to be billed under this code, specifically for video-based interactions, and should be billed as A626A. Note that telephone consultations are not included as eligible Comprehensive Virtual Care Services. For hospital in-patient services, C626 is the equivalent billing code.

4What Your Clinical Note Must Show

1New Written Request

A new written request is necessary for each repeat consultation.

  • Referring physician, nurse practitioner, or dental surgeon must provide a new request.
  • Ensure documentation is attached to the patient's file.
2Virtual Delivery

Eligibility for virtual billing of A626.

  • Must be conducted via video call.
  • Telephone consultations do not qualify.

5Weak vs. Strong Note Examples

The strong note is successful because it includes specific reasons for the repeat consultation, a reference to the new written request, and detailed clinical evaluations. The weak note fails as it lacks documentation of a new referral and detailed patient assessments.

Weak Note

Patient revisited for asthma management.

Consultation conducted based on previous request.

Strong Note

Patient revisited due to unsuccessful initial management of chronic urticaria.

New referral received from Dr. Smith.

Discussed new management approaches; evaluated reaction to previous treatment.

  • Attached new written referral from Dr. Smith.
  • Detailed evaluation of treatment response.

6Common Reasons This Code Is Missed

1
Lack of New Written Referral
Failure to obtain a new referral limits eligibility for billing A626.
2
Confusion with Frequency Limits
Mistaken application of consultation frequency limits may lead to missed billing opportunities.
3
Inadequate Documentation
Missing details in clinical notes or failure to attach necessary documentation might result in payment adjustments.
Document A626 correctly — every time
Empathia's templates automatically structure your notes to capture every required element for audit-proof billing.

8Frequently Asked Questions

What is the reimbursement rate for A626?
The A626 code provides a flat fee of CAD 105.25 for repeat consultations.
Is there a limit on how frequently A626 can be billed?
A626 is not subject to the consultation frequency limits outlined in GP17, provided there is a new referral each time.
What kind of patient cases typically require a repeat consultation in allergy and immunology?
Cases where an initial management plan for conditions like asthma or urticaria has failed, necessitating revised approaches.
Can A626 be billed for telephonic consultations as virtual care?
No, A626 can only be claimed for video consultations under virtual care services.
What patient scenarios justify using A626 over a standard consultation?
Patients requiring reassessment due to reactions to immunotherapy or ineffective initial treatment plans qualify for A626 billing.
Where should the new referral document be maintained?
The new written referral should be filed with the patient’s records to ensure compliance with A626 billing requirements.
How do you determine when A626 is more appropriate than a general assessment?
When a patient needs a reassessment for ongoing issues after an initial consultation has been performed, along with documentation of a new referral.
For inpatient services, what code corresponds to A626?
Use C626 for equivalent inpatient consultations in clinical immunology and allergy.
Disclaimer: This article is intended as a general educational resource for physicians and billing staff. It does not constitute billing advice or a definitive interpretation of the OHIP Schedule of Benefits. Always verify current billing codes, eligibility criteria, and documentation requirements directly against the official Schedule of Benefits or consult with a qualified medical billing specialist.
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