OHIP Billing Guide🩺 ServicePublished 2026
C411

C411 OHIP Billing Code: Enhance Gastroenterology Patient Care

C411 enables gastroenterologists to provide complex medical re-assessments in non-emergency hospital settings, ensuring comprehensive patient care.

For Ontario Physicians & Billing StaffOHIP Schedule of Benefits Reference83.40 CAD~3 min read

1What Is the C411 OHIP Code?

C411 is an OHIP billing code for complex medical specific re-assessments, particularly relevant in gastroenterology for hospital in-patients. Such assessments are critical for conditions like variceal bleeding or decompensated liver disease during an admission.

These assessments involve reconsidering the patient's medical history, current illness status, and treatment progress, focusing on the seriousness and complexity of the condition. C411 captures instances where a deeper and more nuanced review is essential.

Frequently missed due its specificity, C411 requires a detailed approach to patient reassessment, making documentation and understanding of the eligibility criteria crucial.

2Related Codes

CodeNameFrequencyDescription
A413Medical specific assessmentN/AUsed for standard assessments in gastroenterology.
C413Medical specific assessmentN/AUsed for specific assessments within the hospital.
A411Complex medical specific re-assessmentN/ASimilar to C411 but rendered outside hospital settings.
A414Medical specific re-assessmentN/AStandard re-assessment, less intensive than C411.

3Eligibility Requirements

To bill for C411, a gastroenterologist must conduct the assessment on a non-emergency hospital in-patient. This reassessment is due to the complexity or seriousness of the underlying condition. Eligible diagnostic codes include 263, 555, 556, 571, and 579.

The procedure can also be rendered virtually as C411A with video-only consultations being eligible. Note that such reassessments are limited to four occurrences per patient per physician annually. Accurate recording of the start and end times is mandatory to receive payment.

4What Your Clinical Note Must Show

1Time Recording

Mandatory recording on the patient's permanent medical record.

  • Record start and end time of the assessment.
2Diagnostic Codes

Ensure selected diagnostic codes align with complexity requirements.

  • Use eligible codes: 263, 555, 556, 571, 579.
3Virtual Claims

For virtual consultation, use C411A code.

  • Must be video-based, telephone is not eligible.

5Weak vs. Strong Note Examples

The strong note succeeds because it includes comprehensive details about the clinical findings, the reassessment process, and planned interventions, providing a clear rationale for the code's use.

Weak Note

Reviewed patient's condition and prescribed medication.

Strong Note

Completed a detailed reassessment of patient presenting with acute variceal bleeding.

Reviewed changes in liver function tests and adjusted treatment plan accordingly.

Considered potential complications, planned follow-up interventions.

  • Observed significant portal hypertension development.

6Common Reasons This Code Is Missed

1
Incorrect Setting
C411 can only be billed for non-emergency in-patient settings.
2
Documentation Errors
Omissions in recording time or diagnostic codes can lead to claim denials.
3
Frequency Limitations
Exceeding the four times per patient per year limit without justification leads to fee adjustments.
4
Virtual Service Misbilling
Billing for virtual assessments incorrectly can result in nonpayment.
5
Misclassification of Complexity
Failing to identify the required complexity in reassessment often causes rejection.
Document C411 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 C411 be billed per patient?
C411 can be billed a maximum of four times per patient per physician every 12 months.
What distinguishes a complex re-assessment in gastroenterology?
Diseases like severe acute colitis requiring ongoing assessment and intervention plans qualify under C411.
Can C411 be rendered virtually?
Yes, C411 can be rendered virtually via video conferencing and billed as C411A.
What cases in gastroenterology justify a complex re-assessment?
Cases involving complications from variceal bleeding or decompensated liver disease during hospitalization are appropriate.
How are virtual C411 services identified?
Virtual services for C411 need to be conducted via video and documented as C411A.
What are common patient scenarios for billing C411?
If a patient is admitted for decompensated liver disease requiring frequent assessment, C411 is applicable.
What documentation is required for virtual reassessments under C411?
Record the video consultation details, ensuring complexity and assessment details are thoroughly documented.
If only telephone consultation is possible, can it be billed under C411?
No, telephone consultations do not qualify for C411 or C411A 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.
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