OHIP Billing Guide🩺 ServicePublished 2026
A545

A545 OHIP Billing Code: Efficient Gastroenterology Consultations

A545 is billed by gastroenterologists for limited consultations focusing on specific patient issues, providing targeted insights without a comprehensive workup.

For Ontario Physicians & Billing StaffOHIP Schedule of Benefits Reference106.90 CAD~4 min read

1What Is the A545 OHIP Code?

A limited consultation under the OHIP billing code A545 constitutes a focused evaluation by a gastroenterologist, typically addressing specific clinical questions. This might include evaluating whether abnormal liver enzymes merit further imaging or if a positive stool test necessitates a colonoscopy. Unlike a full consultation, a limited consultation requires substantially less time and is designed for cases where a narrowly focused assessment suffices, avoiding the need for broader diagnostic workups.

This consultation type is often utilized in outpatient clinics or physician offices, providing timely advice without requiring the depth of a full consultation. It's critical that referring physicians clearly specify the reason for consultation to ensure efficient use of this service. Failure to meet the specific requirements for a consultation could result in the service being billed at a lower assessment fee.

2Related Codes

CodeNameFrequencyDescription
A415ConsultationLimited to initial consultationsStandard gastroenterology consultation with a comprehensive evaluation.
A416Repeat consultationRepeat consultations for the same issueFollow-up gastroenterology consultation concerning the same diagnosis.
C415ConsultationLimited to initial consultationsConsultation for hospital in-patients requiring full evaluation.
C416Repeat consultationRepeat consultations for the same issueFollow-up hospital-based consultation concerning the same diagnosis.

3Eligibility Requirements

Eligibility for A545 Limited Consultation

To bill for the A545 limited consultation under OHIP, the service must be rendered following a written request from a referring physician, nurse practitioner, or dental surgeon (in connection with a hospital-based insured dental procedure). The consultation should address a specific question and be less time-consuming than a full consultation.

A545 can be provided virtually via video but cannot be billed if provided over the telephone. Physicians should ensure that the nature of the referral justifies the limited consultation, and all relevant documentation requirements are appropriately met. The frequency limit for billing A545 is one service per two consecutive 12-month periods for the same patient, physician, and diagnosis, or per 12 months for an unrelated diagnosis.

4What Your Clinical Note Must Show

1Consultation Request

Ensure a written request from the referring provider is documented.

  • Source of referral (physician, nurse practitioner, or dental surgeon)
  • Specific clinical question to be addressed
2Virtual Care Documentation

If billed as A545A, confirm that consultation was conducted via video.

  • Patient consent for virtual consultation
  • Secure and documented video platform used
3Clinical Findings

Document findings and decisions based on the focused assessment.

  • Specific clinical issue addressed
  • Any recommendations for further action or investigation

5Weak vs. Strong Note Examples

The strong note succeeds by specifying the referring provider, the issue addressed, and providing clear follow-up actions, whereas the weak note lacks detail and concrete recommendations.

Weak Note

Consultation done for elevated liver enzymes. Advised further tests if necessary.

Strong Note

Limited consultation addressing elevated liver enzymes on referral by Dr. Smith. Evaluated potential causes and advised liver ultrasound if enzymes remain elevated.

Recommend follow-up in 3 months with updated lab values.

  • Clear documentation of patient's presenting issue
  • Specific advice given based on consultation findings
  • Actionable recommendations and follow-up plan

6Common Reasons This Code Is Missed

1
Lack of Referral Documentation
Often missed due to insufficient paperwork confirming the consult request.
2
Misclassification of Consultation Complexity
Limited consultation is incorrectly billed as full consultation, leading to billing issues.
3
Failure to Adhere to Frequency Guidelines
Multiple limited consultations within prohibited timeframe due to oversight.
Document A545 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 fee for billing A545?
The fee for billing A545 under OHIP is CAD 106.90 as a flat fee.
Can A545 be billed multiple times in a year for the same diagnosis?
No, A545 can only be billed once per two consecutive 12-month periods for the same diagnosis.
What type of issues commonly require a limited gastroenterology consultation?
Common issues include evaluating abnormal liver enzymes or determining the necessity of a colonoscopy based on stool test results.
How does limited consultation differ for a gastroenterologist compared to a family doctor?
A gastroenterologist focuses on specific gastrointestinal issues, offering expertise on conditions like liver enzyme abnormalities, while family doctors may address more general issues.
What should be included in the referral for a limited consultation?
The referral must specify the clinical question or issue needing evaluation, such as assessment of abnormal lab results.
Can a limited consultation be billed virtually?
Yes, but it must be conducted via video and noted as A545A. Telephone consults do not qualify.
Is it necessary to document patient consent for virtual consultations?
Yes, patient consent should be documented when conducting virtual consultations billed as A545A.
How should follow-up actions be documented in a limited consultation?
Clearly state any recommended actions, tests, or follow-up appointments along with timelines.
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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