OHIP Billing Guide🩺 ServicePublished 2026
C344

C344 OHIP Billing Code: Maximizing Radiation Oncology Re-assessments

The C344 code is used by radiation oncologists for medical-specific re-assessments of hospital in-patients mid-treatment.

For Ontario Physicians & Billing StaffOHIP Schedule of Benefits Reference72.00 CAD~4 min read

1What Is the C344 OHIP Code?

The C344 billing code refers to a medical specific re-assessment within the field of radiation oncology for hospital in-patients. This service typically involves re-assessing patients partway through palliative radiotherapy. In common scenarios, the oncologist evaluates treatment-related reactions like skin irritation, mucositis, or pain flares. Unlike initial assessments, re-assessments focus more narrowly on conditions tracked by the oncology team during ongoing treatment rather than reevaluating or staging the broader disease.

C344 is crucial as it allows radiation oncologists to document and refine treatment plans according to the specific progress or complications a patient encounters during therapy. Missing to properly document such re-assessments can lead to underutilization of comprehensive treatment tracking, possibly affecting patient outcomes.

2Related Codes

CodeNameFrequencyDescription
A343Medical specific assessmentonce per hospital admission or new diseaseInitial assessment for comprehensive management in radiation oncology.
C343Medical specific assessmentonce per hospital admission or new diseaseNon-emergency initial assessment in a hospital setting.
A340Medical specific re-assessmenttwo per patient per yearRe-assessment under outpatient conditions.
A341Complex medical specific re-assessmentwhen complexity dictatesHigher complexity assessment, addressing multiple interrelated factors.

3Eligibility Requirements

To be eligible for billing code C344 under OHIP, the service must be provided by a specialist in a non-emergency hospital in-patient setting. Specific and medical specific re-assessments are allowed twice per patient per physician every 12 months unless rendered for hospital admissions, which are exceptions.

Additionally, C344 services may be provided virtually via video calls but not by telephone as per Appendix J, Section 1. Each assessment must include a comprehensive and relevant history and physical examination of one or more systems and must be thoroughly documented in the patient's medical records, including start and end times.

4What Your Clinical Note Must Show

1Timing Documentation

The service must be documented with precise start and end times for the assessment to be billable.

  • Record start time of re-assessment in patient's medical record.
  • Record end time of re-assessment in patient's medical record.
2Comprehensive Patient Record

Maintain a detailed account of the re-assessment that includes history and physical examination of relevant systems.

  • Document the patient's relevant history related to re-assessment.
  • Conduct and document a physical exam of one or more systems.
3Frequency Limitation Observance

Ensure not to exceed the maximum allowable frequency for this code per patient.

  • Check prior utilization of C344 for the patient within the past 12 months.

5Weak vs. Strong Note Examples

The strong note succeeds by providing a comprehensive examination tailored to the patient's ongoing issues, detailing findings and time documentation, while the weak note lacks specificity and completeness.

Weak Note

Patient seen with pain complaints. Assessed skin and mucositis.

Strong Note

Patient assessed for skin reaction and mucositis arising due to ongoing palliative radiotherapy. Skin shows mild erythema consistent with radiotherapy exposure. Mucositis noted in oral cavity, with specific recommendations provided for symptom management. Assessment began at 10:00 AM and concluded at 10:30 AM.

  • Detailed history relevant to the re-assessment provided.
  • Specific findings and detailed recommendations documented.
  • Exact time of assessment recorded in medical record.

6Common Reasons This Code Is Missed

1
Inadequate Documentation
Failure to record the start and end times or upload detailed notes of the re-assessment.
2
Exceeding Frequency Limits
Billing more than the allowed two re-assessments per patient per year inadvertently.
3
Misinterpretation of Virtual Delivery Eligibility
Billing for telephone rather than permissible video-based virtual assessments.
4
Failure to Meet Comprehensive Physical Examination
Neglecting to perform or document a full and relevant physical examination of the necessary systems.
Document C344 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 billing C344 under OHIP?
The fee for billing C344 is CAD 72.00, acting as a flat rate for medical-specific re-assessments.
What is the frequency limit for billing C344?
The C344 code can be billed up to twice per patient per physician each year, except for hospital admission scenarios.
In radiation oncology, what makes a re-assessment complex enough to bill C341 instead of C344?
Use C341 if the re-assessment is due to complex patient needs, involving multiple interrelated factors and systems.
Why might a radiation oncologist choose a specific re-assessment (C344) over an initial assessment (C343)?
C344 is chosen when focusing on treatment management during therapy, whereas C343 is for initial comprehensive evaluations.
When could a skin reaction during radiotherapy justify billing C344?
A skin reaction occurring during treatment necessitating re-evaluation of care aligns for a C344 re-assessment billing.
How should I bill for a virtual re-assessment in radiation oncology?
Ensure the service is delivered via video, not phone, then bill under C344 for eligible virtual encounters.
Can C344 be used for new secondary complications due to radiotherapy?
Yes, C344 can address new complications arising from ongoing therapy, focusing on emerging issues.
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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