OHIP Billing Guide🩺 ServicePublished 2026
C745

C745 OHIP Billing Code: Optimizing Radiation Oncology Consultations

The C745 code is billed by radiation oncologists performing limited consultations for non-emergency in-patient settings. It provides focused opinions without a full treatment plan.

For Ontario Physicians & Billing StaffOHIP Schedule of Benefits Reference114.90 CAD~3 min read

1What Is the C745 OHIP Code?

What is the C745 Code?

The C745 OHIP billing code is used by radiation oncologists for limited consultations in non-emergency in-patient hospital settings. These consultations typically involve providing a concise expert opinion regarding the urgency and sequence of palliative radiotherapy for a patient, rather than conducting a comprehensive treatment-planning assessment.

This limited consultation is particularly beneficial in scenarios where patients require quick decisions or advice related to palliative care, making it a pivotal tool in hospital ward settings. The focus is on delivering essential insights with reduced demands on time compared to a full consultation.

Many practitioners might overlook using C745 if they aren't fully aware of its specific application in radiation oncology in-patient settings. Ensuring the correct coding can streamline reimbursement processes efficiently.

2Related Codes

CodeNameFrequencyDescription
A345ConsultationNo more than twice per diagnosis in two consecutive yearsFull consultation for a new or different set of problems.
A346Repeat consultationAs medically necessaryWhen further assessment is required beyond the initial consultation.
A745Out-patient Limited consultationSubject to the same frequency limits as in-patientLimited consultation conducted outside of a hospital setting.
C345ConsultationSame frequency rules as A345 but in-patientFull in-patient consultation for new or complex issues.

3Eligibility Requirements

Eligibility Requirements for C745

  • Setting: Must be a non-emergency in-patient service in a hospital.
  • Virtual Delivery: Eligible for video consultation only; code it as C745A. Telephone consultations do not qualify.
  • Consultation Requirements: A consultation must follow a written request from a referring physician, nurse practitioner, or dental surgeon related to a hospital dental procedure. The consultation is warranted due to the patient's complexity, seriousness, or at the patient or representative’s request.
  • Frequency Limits: Limited to one service per two consecutive 12-month periods for the same patient, physician, and diagnosis; however, it can be twice if related to in-patient care more than 12 months apart. For unrelated diagnoses, bill once every 12 months.

4What Your Clinical Note Must Show

1Documentation Requirements

Ensure the following are documented for C745 billing:

  • Written referral from the applicable healthcare provider.
  • Details of the clinical findings and suggested actions related to the consultation.
  • Notes on the consultation duration and relevance to palliative radiotherapy if applicable.

5Weak vs. Strong Note Examples

The strong note succeeds as it provides specific reasoning, referral details, and actionable outcomes, while the weak note lacks detail and context.

Weak Note

Patient referred for limited consultation. Provided opinion.

Strong Note

Consultation required for palliative radiotherapy urgency and sequencing. Patient referred by Dr. Smith. Recommendations were concise and focus pointed.

  • Detailed patient history review.
  • Discussion with referring physician regarding treatment options.

6Common Reasons This Code Is Missed

1
Lack of Awareness
Practitioners may not recognize when a consultation qualifies as 'limited' for C745 billing.
2
Documentation Gaps
Insufficient documentation can lead to not meeting the criteria outlined for C745.
3
Misunderstanding Virtual Eligibility
Assuming telephone consultations are eligible for C745 billing, whereas only video consultations qualify.
Document C745 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 maximum frequency for billing C745?
C745 can be billed once per two consecutive 12-month periods for the same patient and condition, with exceptions for unrelated diagnoses.
Can the C745 code be billed for phone consultations?
No, C745 is only eligible for video consultations, not phone.
How does C745 fit into palliative care?
It's used for timely assessments of palliative radiotherapy needs without full treatment planning in hospital settings.
What qualifies as a limited consultation in radiation oncology?
Consultations that provide essential advice on radiotherapy prioritization, avoiding full-scale assessments.
Who can refer a patient for a C745 consultation?
Referrals can be made by physicians, nurse practitioners, or dental surgeons for relevant in-patient needs.
What patient scenarios might justify using C745 over A345?
A patient with an existing diagnosis needing immediate guidance on radiotherapy scheduling in a hospital ward justifies C745.
Are there any additional fees for in-person vs. virtual C745 consultations?
Both in-person and eligible video calls bill the same, though documentation specifics differ.
What should be documented in the consultation note for eligibility?
Ensure a written referral, detailed patient interaction, recommendations, and rationale are documented.
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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