OHIP Billing Guide🩺 ServicePublished 2026
C051

C051 OHIP Billing Code: Ensure Comprehensive In-Patient Re-Assessments

C051 is used by Preventive Medicine physicians for complex medical re-assessments of non-emergency in-patients, covering serious conditions.

For Ontario Physicians & Billing StaffOHIP Schedule of Benefits Reference74.45 CAD~3 min read

1What Is the C051 OHIP Code?

A complex medical specific re-assessment (C051) is designed for non-emergency hospital in-patients with complex, obscure, or serious medical conditions requiring comprehensive evaluation. In the specialty of Preventive Medicine, this typically involves patients at the center of communicable disease investigations, where detailed understanding of the illness, isolation requirements, and control measures is essential.

Unlike standard assessments, C051 captures the nuanced needs of these patients to ensure their management aligns with public health priorities. The depth of such evaluations often makes the code overlooked, particularly if the full complexity is not documented.

2Related Codes

CodeNameFrequencyDescription
A053Medical specific assessmentStandard limited to four per 12 months per patientUsed for typical assessments in community medicine.
C053Complex medical specific assessmentStandard limited to four per 12 months per patientUsed for initial complex in-depth assessments.
W054General re-assessment of a patient in nursing homeNot specified beyond context limitationFor reassessment under the Nursing Homes Act.
A051Complex medical specific re-assessment (out-patient)Linked frequency with C051, limited to four per 12 months per patientOut-patient equivalent of C051.

3Eligibility Requirements

To be eligible for the C051 billing code under OHIP, the service must be provided as a non-emergency hospital in-patient service within the Community Medicine listing.

  • Only physicians in the Preventive Medicine specialty can bill this code.
  • The service is limited to four complex medical specific re-assessments per patient per physician within a 12-month period, combining with other assessments to this same limit.
  • Services rendered must include a time recording, outlining when the service started and ended, as part of the patient's medical record.
  • Although C051 can be provided via video conferencing, it cannot be conducted over the phone per the OHIP eligibility criteria.

4What Your Clinical Note Must Show

1Time Documentation

Accurate time recording is vital for billing compliance for C051.

  • Start and end times must be recorded on the patient's medical record.
  • Ensure date and duration are clearly documented.

5Weak vs. Strong Note Examples

The strong note is detailed, covering specific clinical activities and public health coordination with precise time documentation, whereas the weak note lacks comprehensiveness and time details.

Weak Note

Assessed patient's condition. Discussed infectious control measures. Plan for follow-up visit.

Strong Note

Evaluated patient for ongoing fever and cough. Suspected communicable infection post travel. Implemented isolation per CHU guidelines, examined infection vectors via contact tracing, and coordinated with public health for containment strategies.

  • Start time: 10:00 AM
  • End Time: 10:45 AM

6Common Reasons This Code Is Missed

1
Failure to Record Times
Missing start and end times for the re-assessment in medical records disqualifies the service from billing.
2
Overlooking Complexity Documentation
When the complex nature of a condition is not thoroughly documented, eligibility for the code is compromised.
3
Exceeding Frequency Limits
Billing beyond the four permissible re-assessments yearly per patient is frequently overlooked, resulting in denied claims.
4
Attempted Telephone Billing
Misunderstanding virtual delivery criteria leads to erroneous billing of C051 for services rendered by telephone.
5
Inadequate Public Health Detailing
Neglecting to document the public health implications and actions compromises the claim’s validity.
Document C051 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 C051 billing code?
The fee for C051 is $74.45.
How often can C051 be billed per patient?
C051 can be billed up to four times per patient, per physician, per year.
What types of cases in Preventive Medicine qualify for C051?
Cases involving communicable disease investigations requiring isolation measures typically qualify.
In a communicable disease case, how should patient isolation be documented?
Detail all isolation actions and collaboration with public health authorities in the patient's record.
What patient scenarios best justify using C051?
Patients requiring complex evaluations for infection control, particularly those presenting with travel-related diseases.
Why would a reassessment of an admitted patient not qualify for C051?
The reassessment may not meet the required complexity criteria or lack thorough documentation.
Can a C051 be billed for services rendered via phone call?
No, C051 can only be billed for in-person or eligible video conferencing re-assessments.
What is crucial for documenting a communication with public health regarding patient care?
Include time, summary of discussion, and actions agreed upon to manage the health implications.
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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