C343 OHIP Billing Code: Radiation Oncology Assessment

1What Is the C343 OHIP Code?

C343 is an OHIP billing code used by radiation oncologists for conducting a medical specific assessment on a hospitalized patient. This typically involves an in-depth evaluation of a patient admitted with a symptomatic metastatic site, focusing on assessing the need and applicability of radiotherapy.

Radiation oncologists use this code to document comprehensive assessments, including a full history of the presenting complaint and a detailed examination of relevant body systems. These assessments are critical in guiding treatment decisions, ensuring that patients receive the most appropriate care.

This code is often missed due to oversight in recording the necessary detailed documentation or misunderstanding the specific criteria under which the C343 code can be billed.

2Related Codes

Code	Name	Frequency	Description
A343	Medical specific assessment	Once per 12 months	Out-patient equivalent of C343 in Radiation Oncology.
A340	Medical specific re-assessment	As clinically necessary	Re-evaluation involving further review in Radiation Oncology.
A341	Complex medical specific re-assessment	As clinically necessary	Involves comprehensive re-assessment due to case complexity.
C341	Complex medical specific re-assessment	As clinically necessary	In-patient complex re-evaluation in Radiation Oncology.

3Eligibility Requirements

C343 is eligible for billing when a radiation oncologist performs a medical specific assessment on a non-emergency hospital in-patient. This service is limited to once per 12-month period per patient per physician unless the patient returns with a different, unrelated diagnosis or if at least 90 days have passed and this is a hospital admission assessment.

Virtual Delivery: C343 can be billed for virtual consultations as C343A when conducted via video. Telephone consultations do not qualify.

For further procedural eligibility and comprehensive guidelines, refer to General Preamble sections GP40 to GP48 and GP65 to GP78 for emergencies and special visits.

4What Your Clinical Note Must Show

1Time Recording and Documentation

The service is not payable without proper time documentation.

Record the start and end times of the service in the patient's permanent medical record.

5Weak vs. Strong Note Examples

The strong note succeeds by explicitly detailing the patient's condition, assessment process, and recording start-end times, ensuring compliance and justification for billing.

❌ Weak Note

Patient seen. Brief assessment conducted. Next steps to be determined.

✓ Strong Note

Conducted a comprehensive assessment for a patient admitted with symptomatic metastatic disease.

Took a detailed history, including symptom onset, progression, and previous treatments.

Performed a targeted physical examination of the affected regions and discussed potential radiotherapy options.

Assessment Date: MM/DD/YYYY
Start Time: HH:MM
End Time: HH:MM

6Common Reasons This Code Is Missed

Incomplete Documentation

Lack of detailed patient history or examination findings leads to non-compliance with billing requirements.

Eligibility Criteria Overlooked

Forgetting the specific in-patient and time frame requirements can result in billing errors.

Misinterpreting Virtual Care Eligibility

Billing the code for telephone assessment despite it being eligible only for video consultations.

Document C343 correctly — every time

Empathia's templates automatically structure your notes to capture every required element for audit-proof billing.

Try Free Template Book a Demo

8Frequently Asked Questions

What is the fee for the C343 assessment?

The flat fee for the C343 assessment is CAD 95.95.

How often can I bill C343 for a patient?

C343 can be billed once per patient per 12-month period unless specific conditions are met for a second assessment.

What types of in-patient cases usually qualify for C343 in Radiation Oncology?

Cases typically involve symptomatic metastatic sites where assessing the applicability of radiotherapy is needed.

What differentiates a C343 assessment in Radiation Oncology from other specialties?

The focus on determining radiotherapy's applicability for metastatic sites in hospitalized patients distinguishes it.

What patient scenario might necessitate a second C343 assessment?

A new, unrelated diagnosis or hospital admission with 90 days since the last assessment may require a second assessment.

Can a referral from an ER directly lead to a C343 assessment?

Yes, if the patient becomes a hospital in-patient requiring specific radiotherapy evaluation.

Are telephone consultations eligible for C343 billing?

No, only video consultations are eligible for virtual C343 billing.

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.

C343 OHIP Billing Code: Efficient In-Patient Assessments by Radiation Oncologists

1What Is the C343 OHIP Code?

2Related Codes

3Eligibility Requirements

4What Your Clinical Note Must Show

5Weak vs. Strong Note Examples

6Common Reasons This Code Is Missed

8Frequently Asked Questions