OHIP Billing Guide🩺 ServicePublished 2026
C435

C435 OHIP Billing Code: Efficient Limited Consultations for In-Patients

Learn about billing the C435 code for limited consultations in internal medicine. Ideal for quick assessments of in-patient needs.

For Ontario Physicians & Billing StaffOHIP Schedule of Benefits Reference123.10 CAD~3 min read

1What Is the C435 OHIP Code?

The C435 billing code is used for limited consultations in the internal medicine setting, especially for in-patients. It typically covers scenarios where a physician addresses a narrow clinical question, such as interpreting an abnormal test result or determining the resumption of chronic medications post-surgery, without a full internal medicine assessment.

This code is often missed when the patient's condition requires a comprehensive assessment instead. In cases requiring a more in-depth evaluation, it may be more appropriate to bill code C135.

2Related Codes

CodeNameFrequencyDescription
A130Comprehensive internal medicine consultationOne per 12-month period per patientInvolves a comprehensive assessment of the patient by internal medicine specialists.
A135ConsultationAs clinically requiredFor situations demanding a detailed evaluation in internal medicine.
A136Repeat consultationOne per patient per 12-month period after the initial consultationCovers subsequent consultations following the comprehensive one within the year.
A435Limited consultationAs per C435 guidelines, outside hospital settingsEquivalent service rendered outside hospital settings.

3Eligibility Requirements

C435 may be rendered virtually and billed as C435A, but only under the "VIDEO ONLY" category. Telephone consultations are not eligible under this code. This service applies to in-patients and has an out-patient equivalent of A435.

The billing frequency for C435 is limited to one service per physician, patient, and diagnosis combination every two consecutive 12-month periods. Furthermore, the service is eligible once every 12 months for clearly defined unrelated diagnoses.

4What Your Clinical Note Must Show

1Documentation for C435

Ensure the documentation captures key elements for in-patient limited consultations.

  • Patient's name and OHIP number
  • Date and time of service
  • Narrow clinical question addressed
  • Physician's assessment and plan
  • Reason for not providing a comprehensive consultation

5Weak vs. Strong Note Examples

The strong note succeeds because it provides specific details about the clinical question and outlines the physician's decision-making process. The weak note lacks detail and specificity.

Weak Note

Consulted for abnormal lab result.

Advised no change in current management.

Strong Note

Patient presented with a newly identified elevated liver enzyme, ALT.

Reviewed patient's chart and medications post-cholecystectomy.

Concluded the elevation likely transient post-surgical change, no immediate intervention required.

  • Outlined rationale for no change in medication.
  • Documented communication with surgical team.

6Common Reasons This Code Is Missed

1
Confusing with Repeat Consultation
Physicians may mistakenly bill C435 when a repeat consultation (C136) is appropriate, particularly if a full review is warranted within a short period.
2
Full Assessment Required
Misuse occurs if a situation demands a comprehensive internal medicine evaluation, which should instead be billed under C135.
3
Eligibility Misunderstanding
Practitioners might overlook that telephone consultations are not eligible, leading to incorrect billing for virtual services.
Document C435 correctly — every time
Empathia's templates automatically structure your notes to capture every required element for audit-proof billing.

8Frequently Asked Questions

Can C435 be billed more than once in 12 months for the same diagnosis?
No, it can only be billed once per two consecutive 12-month periods for the same diagnosis by the same physician.
Is telephone consultation eligible for C435 billing?
No, only video consultations qualify under C435 for virtual care.
How does a limited consultation differ in complex diagnostic conditions in internal medicine?
It's typically used for straightforward cases requiring brief intervention or advice based on specific questions, not complex assessments.
In what scenarios would a comprehensive consultation be billed instead?
If a full internal assessment or multiple issues need evaluation, a comprehensive consultation code such as A130 would apply.
When might a limited consultation be sufficient for a post-surgical patient?
When answering if chronic medications can resume post-surgery or interpreting a specific abnormal result.
Can a specialist consult from another area trigger a C435 consultation?
Yes, if the query is narrow, such as interpreting specific lab results, even from inter-department consultations.
How quickly should the limited consultation be documented?
Documentation should follow promptly to capture the specific inquiry and decision-making process clearly.
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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