OHIP Billing Guide🩺 ServicePublished 2026
A340

A340 OHIP Billing Code: Ensuring Effective Follow-Up in Radiation Oncology

A340 allows radiation oncologists to conduct comprehensive follow-up assessments, particularly focusing on specific treatment-related complications.

For Ontario Physicians & Billing StaffOHIP Schedule of Benefits Reference72.00 CAD~3 min read

1What Is the A340 OHIP Code?

Understanding A340: Medical Specific Re-assessment

The A340 billing code applies to medical specific re-assessments provided by radiation oncologists. This situation typically involves a detailed follow-up of patients part-way through their radiotherapy sessions, focusing on complications such as skin reactions, mucositis, or pain flare-ups.

It's crucial for these re-assessments to concentrate on treatment-related issues rather than general health checks or disease restaging. Unfortunately, this code is often misapplied when the visits don't specifically address complications directly resulting from radiation therapy.

2Related Codes

CodeNameFrequencyDescription
A343Medical specific assessmentOnce per 12 monthsInitial comprehensive assessment.
C343Medical specific assessmentOnce per 12 monthsComprehensive assessment in a different setting.
A341Complex medical specific re-assessmentTwice per 12 monthsFor more complex radiotherapy-related complications.
C341Complex medical specific re-assessmentTwice per 12 monthsComplex re-assessment for hospital-based scenarios.

3Eligibility Requirements

Eligibility Requirements for A340

  • Service Scope: Must involve a complete and relevant history and physical examination of one or more systems pertaining to the treatment complication.
  • Billing Frequency: Limited to two instances per patient, per physician, per consecutive 12-month period, except when related to hospital admissions.
  • Documentation of Time: The physician must accurately record the start and end time of the service in the patient's permanent medical record or chart.
  • Virtual Care: Eligible to be billed as A340A if provided through video or telephone consultations.

4What Your Clinical Note Must Show

1Documentation Requirements for A340

Accurate documentation is crucial for the A340 billing code.

  • Comprehensive patient history and relevant physical examination details.
  • Explicitly record start and end times of the consultation.
  • Present a focus on specific treatment-related issues.

5Weak vs. Strong Note Examples

The strong note specifically documents the issue related to treatment and includes critical elements like start/end times, whereas the weak note lacks specificity and fails to capture necessary treatment-related information.

Weak Note

Follow-up visit for radiotherapy patient.

General check-up with no specific focus on treatment complications was documented.

Strong Note

The patient returned for a follow-up due to a significant skin reaction from ongoing radiotherapy.

A detailed history was taken regarding the timeline and severity of the skin reaction.

A physical examination was performed focusing on the affected dermal areas.

  • Documented the start and end times of the visit.
  • Healthcare advice provided specifically for managing radiotherapy-induced dermal complications.

6Common Reasons This Code Is Missed

1
Lack of Specific Focus
Providers often fail to document that the visit was specifically to address a radiotherapy-related issue.
2
Missing Time Entry
Omissions on start and end times lead to claim rejections.
3
Exceeding Frequency Limit
Billing this code more than allowed in a 12-month period without hospital admission context.
Document A340 correctly — every time
Empathia's templates automatically structure your notes to capture every required element for audit-proof billing.

8Frequently Asked Questions

How often can A340 be billed per patient?
A340 can be billed twice per patient per physician every 12 months, except for hospital admissions.
What constitutes a radiotherapy-induced issue in radiation oncology?
Skin reactions, mucositis, or pain flare-ups are examples of complications from radiotherapy that warrant billing under A340.
Is A340 eligible for virtual visits?
Yes, A340 can be billed as A340A for video or telephone consultations.
Can a patient be examined for their general health under A340?
No, A340 is meant for assessing specific treatment-related complications only.
What must be included in the patient's medical record for A340?
A comprehensive history, treatment-related physical exam details, and start/end times of the visit.
What is the fee associated with the A340 billing code?
The fee for A340 is CAD 72.00.
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.