OHIP Billing Guide🩺 ServicePublished 2026
A460

A460 OHIP Billing Code: Comprehensive Infectious Disease Consultation

The A460 billing code covers a comprehensive infectious disease consultation, a service offered by specialists for complex cases requiring at least 75 minutes of patient contact.

For Ontario Physicians & Billing StaffOHIP Schedule of Benefits Reference342.25 CAD~3 min read

1What Is the A460 OHIP Code?

The A460 billing code in Ontario covers a comprehensive infectious disease consultation. This service is provided by infectious disease specialists and involves a detailed evaluation of complex cases, typically requiring a minimum of 75 minutes of direct patient interaction.

These consultations are commonly sought for cases such as prolonged fever of unknown origin or patients undergoing long-term suppressive therapy with multiple drug interactions.

A comprehensive consultation addresses the complexity, seriousness, or obscurity of the case, distinguishing it from limited consultations that are less time-intensive and comprehensive.

2Related Codes

CodeNameFrequencyDescription
A275Limited consultationVariableCovers limited consultations within the Infectious Disease listings.
A465ConsultationVariableStandard consultation for infectious disease cases, less comprehensive than A460.
A466Repeat consultationVariableFor repeat consultations under infectious disease listings.
C275Limited consultation (Hospital In-Patient)VariableLimited consultation applicable to hospital in-patients.

3Eligibility Requirements

To be eligible for billing under the A460 code, the consultant must satisfy the following criteria:

  • The consultation must follow a written request from a qualified referring provider, such as a physician, nurse practitioner, or dental surgeon in the context of a related hospital-based procedure.
  • A minimum of 75 minutes of direct patient contact is required, excluding any other billable service time.
  • The consultation must include all necessary elements and conclude with a written report containing findings, opinions, and recommendations.
  • Medical records must reflect precise start and end times for the consultation.
  • Frequency limits apply: one service per two consecutive 12-month periods for the same patient and diagnosis. An exception allows a second consultation if performed in a hospital or ER 12-24 months after the first.

4What Your Clinical Note Must Show

1Time Documentation

Accurate start and stop times are mandatory.

  • Ensure the recorded times are documented on the patient's permanent medical record.
2Written Consultation Request

A written request from a referring entity is essential.

  • Must include identification of the consulting physician and the referring entity by name and billing number.
  • The request should detail the service needed and the patient's pertinent information.
3Consultation Report

A comprehensive report is required post-consultation.

  • Include findings, opinions, and recommendations based on the consultation.
  • Submit the report to the referring entity.

5Weak vs. Strong Note Examples

The strong note includes specific start and stop times, a clear summary of the consultation, and comprehensive documentation of outcomes and recommendations. The weak note fails to provide specific details and does not document consultation times accurately.

Weak Note

Consultation completed. Duration around 75 minutes. Discussed the main health concerns.

Strong Note

Comprehensive infectious disease consultation conducted.

Start Time: 10:15 AM

End Time: 11:30 AM

Discussed differential diagnosis of prolonged fever and reviewed patient's current suppressive therapy, noting interactions. Detailed recommendations sent to Dr. Smith, the referring physician.

  • Recorded precise times with the consultation duration.
  • Documented discussion points and outcomes clearly.

6Common Reasons This Code Is Missed

1
Incomplete Time Documentation
Failure to record the precise start and stop times in the medical record.
2
Missing Written Referral
Absence of a properly documented referral request by an authorized provider.
3
Unmet Minimum Contact Time
Not having at least 75 minutes of direct patient interaction.
4
Exceeded Frequency Limits
Billing the same patient and physician for the same diagnosis more than allowed frequency.
5
Inadequate Documentation of Consultation Elements
Lack of a detailed consultation report with findings and recommendations.
Document A460 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 A460?
The fee for A460 is CAD 342.25, a flat rate for comprehensive infectious disease consultations.
How often can A460 be billed for the same patient and diagnosis?
A460 can be billed once every two consecutive 12-month periods, with specific exceptions for inpatient or ER cases.
What types of cases qualify for an A460 consultation?
Cases such as prolonged fever of unknown origin or patients with complex drug interactions on long-term therapy typically qualify.
What are typical referral sources for an A460 consultation?
Referrals typically come from physicians or nurse practitioners for complex infectious disease cases that exceed standard assessments.
Why might a patient be referred for a comprehensive consultation?
A comprehensive consultation may be needed for challenging cases requiring complex evaluation and expert opinion.
How does a comprehensive consultation benefit patients with prolonged fever?
The consultation provides a detailed evaluation and management plan, addressing specific complexities in the patient’s condition.
What must be included in the consultation report?
The report should include findings, opinions, and recommendations for the patient's case.
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.
@2026 Empathia AI, Inc. All rights reserved.