OHIP Billing Guide🩺 ServicePublished 2026
A345

A345 OHIP Billing Code: Comprehensive Consultations in Radiation Oncology

OHIP's A345 code enables Radiation Oncologists to bill for initial comprehensive consultations in Ontario for complex cases requiring assessment and treatment planning.

For Ontario Physicians & Billing StaffOHIP Schedule of Benefits Reference178.75 CAD~4 min read

1What Is the A345 OHIP Code?

What is A345?

A345 is the billing code for a comprehensive consultation service provided by Radiation Oncologists in Ontario, under the OHIP system. This service is typically utilized for newly diagnosed cancer patients to determine the appropriateness of radiotherapy, set intent, target, and fractionation before proceeding with treatment planning.
This code allows for the incorporation of a detailed assessment and enables the consulting physician to prepare a comprehensive report for the referring healthcare provider, addressing the complex needs of oncology patients. Given the necessity for a written referral request and comprehensive patient evaluation, A345 differs from more limited consultation codes.

2Related Codes

CodeNameFrequencyDescription
A346Repeat ConsultationUse for the same patient, same physician when consultation requirements are met again within the cycle.Used for repeated consultations where criteria for a consultation are satisfied again.
A745Limited ConsultationUse when the consultation scope does not meet comprehensive levels.Applicable for consultations that are less extensive than those billed under A345.
C345Consultation for In-patientsApplies to consultations for hospital in-patients.A345 equivalent for consultations provided within a hospital setting.
C346Repeat Consultation for In-patientsSimilar scenarios as A346 but for hospital in-patients.Repeated consultation code for use in hospitals similar to C345.

3Eligibility Requirements

Eligibility Requirements for Billing A345

To bill A345, the consultation must be rendered following a written request from a referring physician, nurse practitioner, or dental surgeon. The consultation should address a case of complexity, seriousness, or require another opinion. A written report summarizing the findings, opinions, and recommendations must be prepared for the referrer.
The consultation request must include:

  • Consultant name/specialty, referring professional’s name and billing number, and patient’s details (name, health number).
  • Specific services and information relevant to the referral.
  • A clearly defined unrelated diagnosis for consultations more frequent than once every 24 months, unless rendered to a hospital in-patient or an Emergency Department patient with the same diagnosis.

4What Your Clinical Note Must Show

1Consultation Request

Maintain a copy of the consultation request in the patient's record, except where common records exist in hospitals or LTCFs.

  • Request must be in writing from the referrer.
  • Include referring provider's name and billing number.
  • Identify the patient by name and health number.
  • Include relevant referral information.
2Documentation of Time

Time must be recorded in the patient’s medical record.

  • Start and end time of consultation must be recorded to ensure service is payable.
3Written Report

Prepare a comprehensive written report to the referring professional.

  • Include findings, opinions, recommendations.
  • Copy should be sent following consultation completion.

5Weak vs. Strong Note Examples

The strong note clearly demonstrates compliance with OHIP requirements by detailing the consultation process, providing a comprehensive report, and recording accurate time entries, unlike the vague weak note.

Weak Note

Consultation performed today. Report was generated and sent.

Strong Note

Consultation performed upon receipt of request from Dr. Smith, today's date. Discussed complexities of patient's new cancer diagnosis and treatment options.

Prepared detailed report including assessment findings, opinion on radiotherapy indication, and treatment recommendations. Report sent to Dr. Smith.

Consultation time started at 10:00 AM and ended at 11:30 AM.

  • Clear identification of referring physician and reason for consultation.
  • Detailed summary of assessment, findings, and recommendations.
  • Precise timing details included.

6Common Reasons This Code Is Missed

1
Lack of Written Referral
Failure to have a documented referral request often results in non-compliance and eligibility issues.
2
Insufficient Documentation
Omitting detailed report elements or failing to document the consultation timing can lead to reduced fees.
3
Overbilling Within Limitation Periods
Misunderstanding frequency limits may result in overbilling, leading to downgrading to an assessment fee.
4
Incorrect Use of Virtual Delivery Codes
Billing incorrectly for telephonic consultations which are not covered under A345 may lead to claim denials.
Document A345 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 A345?
The fee for A345 is CAD 178.75 per consultation.
How often can I bill A345 for the same patient?
A345 can typically be billed once per two consecutive 12-month periods per patient, unless specific conditions are met.
What type of cases in Radiation Oncology qualify for A345?
Newly diagnosed cancer cases that require complex evaluation, radiotherapy indication, and planning typically qualify under A345.
Can I provide A345 services virtually?
Yes, as long as the service is delivered via video call and listed as A345A, it can be billed virtually.
What determines a consultation necessity in a new oncology referral?
The complexity, seriousness, or obscurity of the case determines necessity, or if another professional opinion is specifically requested.
Are emergency department referrals eligible for a second A345 consultation?
Yes, if it is more than 12 but less than 24 months since the first one, and the patient was in an ER or inpatient setting.
Is a referral from a dental surgeon valid for A345?
Yes, provided the referral pertains to a complex dental procedure relevant for a hospital setting.
What happens if I bill A345 without a proper referral?
The consultation fee may be reduced to a lesser assessment fee if documentation requirements aren’t met.
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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