OHIP Billing Guide🩺 ServicePublished 2026
C606

C606 OHIP Billing Code: Maximize Patient Care with Repeat Consultations

C606 is billed by cardiologists for repeat consultations of in-hospital patients based on new written requests. Certain eligibility criteria must be met for billing.

For Ontario Physicians & Billing StaffOHIP Schedule of Benefits Reference105.25 CAD~3 min read

1What Is the C606 OHIP Code?

C606 is the OHIP billing code used by cardiologists for a repeat consultation in the context of a hospital in-patient setting. This code is appropriate when the cardiologist has previously consulted on the patient and is requested again due to new clinical developments such as recurring chest pain, a significant troponin rise, or a notable change in rhythm.

These consultations are crucial for providing continuous, quality care and ensuring optimal management of the patient's cardiac condition. A repeated consultation requires a fresh, written request from the referring physician to qualify for billing under this code. Unfortunately, it is common for this requirement to be overlooked, resulting in missed billing opportunities or insufficient documentation to support the claim.

2Related Codes

CodeNameFrequencyDescription
A600Comprehensive cardiology consultationInitialA comprehensive cardiology evaluation.
A605ConsultationInitialStandard cardiology consultation.
A606Repeat consultationOutside HospitalRepeat consultation code for out-patient settings.
A675Limited consultationInitialBrief consultative service.

3Eligibility Requirements

To bill C606, the physician must adhere to the following eligibility criteria:

  • Repeat Consultation Criteria: This code is applicable only for repeat consultations of in-patient services.
  • Written Request: A new written request from the referring physician, nurse practitioner, or dental surgeon is mandatory.
  • Virtual Services: C606 can be billed as C606A if rendered virtually via video, but telephone consultations are not permissible under this code.
  • Out-Patient Consideration: For services rendered outside hospital in-patient settings, use the corresponding code A606.

4What Your Clinical Note Must Show

1Written Request Documentation

Every repeat consultation under C606 must have a documented written request.

  • Ensure request is dated.
  • Include referring practitioner's details.
  • Retain a copy in the patient's record.
2Clinical Follow-Up Notes

Document the clinical reasons for the repeat consultation, detailing any new developments.

  • Include new symptoms or test results.
  • Summarize findings and recommendations.
3Virtual Consultation Criteria

For virtual consultations, document the mode of communication.

  • Indicate that video was used.
  • Record platform details and technical feasibility.

5Weak vs. Strong Note Examples

The strong note succeeds by clearly documenting the reason for the repeat consultation, acknowledging the written request, and detailing comprehensive clinical observations and recommendations, while the weak note lacks specific details and supporting documentation.

Weak Note

Reviewed patient's chart and symptoms. Repeat consultation conducted. Recommendations made orally to the team.

Strong Note

Received a written request from Dr. Smith due to patient's elevated troponin level and recurrent chest pain. Conducted a thorough evaluation, noting changes in patient's rhythm and clinical picture. Recommendations for medication adjustment provided. Documented video consultation via secure platform with family present.

  • Detail specific new findings related to the patient's symptoms.
  • Include the written request acknowledgment.
  • Document virtual consultation specifics.

6Common Reasons This Code Is Missed

1
Lack of Written Request
Failure to secure and document a new written request from the referring physician.
2
Inadequate Documentation
Poor or insufficient details in the consultation note can lead to claim rejections.
3
Confusion with Virtual Eligibility
Misunderstanding that C606 can only be billed for video, not telephone consultations, might result in ineligible claims.
4
Failure to Differentiate from Initial Consult
Mistaking a repeat consultation for an initial consultation or vice versa can result in incorrect billing.
Document C606 correctly — every time
Empathia's templates automatically structure your notes to capture every required element for audit-proof billing.

8Frequently Asked Questions

Can C606 be billed alongside other codes on the same day?
Yes, it can be billed alongside other services if each has distinct and documented reasons.
What is the fee for C606?
The standard fee for C606 is CAD 105.25.
What conditions often lead to a repeat cardiology consultation?
Conditions like recurring chest pain, rhythm changes, or elevated troponin levels necessitate repeat consultations in cardiology.
Why is a repeat consultation necessary for an in-patient?
Repeat consultations address new developments or complications in a patient's condition requiring updated evaluation and management.
What justifies billing C606 instead of other codes like A600 or A605?
C606 is billed when a follow-up consultation is required due to changes in the patient's clinical condition, separate from initial comprehensive evaluations.
How should a written request be documented in the patient's record?
The request must clearly state the reason for the repeat consultation and be signed and dated by the referring physician.
Is a virtual consultation billed under C606 eligible if delivered via telephone?
No, virtual consultations billed under C606 must be conducted via video, not telephone.
What diagnoses are typically coded when billing C606 for cardiology services?
Diagnoses like heart failure (code 428) or myocardial infarction are typical under this code.
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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