OHIP Billing Guide🩺 ServicePublished 2026
C270

C270 OHIP Billing Code: Complex Infectious Disease Assessment for In-Patients

C270 allows infectious disease specialists to conduct complex assessments on non-emergency hospital in-patients, vital for managing intricate cases like persistent bacteraemia.

For Ontario Physicians & Billing StaffOHIP Schedule of Benefits Reference95.05 CAD~3 min read

1What Is the C270 OHIP Code?

C270 is an OHIP billing code used by infectious disease specialists to deliver complex infectious disease assessments in non-emergency hospital in-patient settings. This code is particularly relevant for patients with intricate medical needs, such as those with complex prosthetic device infections or persistent bacteraemia, where ongoing infectious disease management is essential.

Given its application, C270 often involves comprehensive evaluation and decision-making processes to address challenging infectious conditions that require a deeper understanding of patient history and treatment impacts.

Physicians can occasionally overlook this billing code when a complex assessment is performed, either due to a lack of clarity on its applicability or due to miscommunication about the required documentation, such as the exact times of service delivery needed for billing compliance.

2Related Codes

CodeNameFrequencyDescription
A270A270 Complex infectious disease assessmentSubject to the same conditions as C270The corresponding outpatient code for complex infectious disease assessments.
A275A275 Limited consultationUnlimited within infectious disease specialty rulesFor less intensive consultations within infectious disease.
A460A460 Comprehensive infectious disease consultationUnlimited within infectious disease specialty rulesUsed for comprehensive consultations requiring significant resources.
A465A465 ConsultationUnlimited within infectious disease specialty rulesGeneral consultation for infectious disease cases.

3Eligibility Requirements

The C270 code is applicable for non-emergency hospital in-patient services under the infectious disease specialty. Physicians are limited under this code to a maximum of six assessments per patient, per physician, over a 12-month period. Any services exceeding this limit will be adjusted to a lesser assessment fee. Specifically, C270 must include all the elements of a specific assessment; otherwise, fees will be adjusted accordingly. Importantly, start and stop times must be recorded in the patient's permanent medical record for the service to be billable.

In virtual care settings, C270 can only be billed through video consultations, coded as C270A. Telephone consultations are not eligible under this code for virtual delivery. For further details, refer to General Preamble sections GP40 to GP48 and GP65 to GP78.

4What Your Clinical Note Must Show

1Time Recording

The precise times when the service started and ended must be recorded in the patient's permanent medical record.

  • Ensure both start and stop times are documented clearly.
  • Use a consistent format for recording times for every patient.

5Weak vs. Strong Note Examples

The strong note provides detailed documentation of the assessment's duration and specific findings, aligning with OHIP's documentation requirements, unlike the weak note.

Weak Note

Conducted assessment for complex infection.

Discussed treatment options; will monitor progress.

Strong Note

Initiated complex infectious disease assessment at 09:00, concluded at 10:00.

Reviewed patient's history of prosthetic device infections.

Conducted thorough evaluation revealing persistent bacteraemia.

  • Detailed examination of treatment responses.
  • Outlined specific next steps in patient management plan.

6Common Reasons This Code Is Missed

1
Start/Stop Time Not Recorded
Physicians sometimes overlook the necessity of recording start and stop times for eligibility.
2
Exceeding Frequency Limit
Complex assessments exceeding the six-per-year limit per patient result in downgraded reimbursements.
3
Misidentifying Service Setting
Confusion between in-patient and out-patient settings may lead to incorrect billing, using the wrong code.
Document C270 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 C270?
The fee for C270 is CAD 95.05 as per the OHIP schedule.
How many C270 assessments can a physician bill per patient annually?
Physicians can bill up to six complex assessments per patient, per 12-month period.
What types of cases typically require a complex infectious disease assessment?
Cases such as complex prosthetic device infections or persistent bacteraemia may require such assessments.
Can C270 be billed for telephone consultations?
No, C270 can only be billed for video consultations in virtual settings.
What scenarios justify the use of C270 over a less complex code?
In intricate infectious disease cases that necessitate comprehensive evaluation and management.
Is a referral needed for billing C270?
Typically, complex cases come through specialist referrals due to the high complexity involved.
Should the assessment always include a management plan after evaluation?
Yes, a detailed management plan often follows from the complex assessment findings.
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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