Remittance Advice · Payment-time (remittance)
OHIP explanatory code C4
Consultation not allowed with this service-paid as assessment
What C4 means
The Ministry of Health’s official wording for C4 is: “Consultation not allowed with this service-paid as assessment.”
This code appears as an explanatory code on your monthly Remittance Advice (RA). It means the claim was adjudicated — paid, reduced, or refused — for the reason below. A claim already on your RA generally shouldn't be blindly resubmitted; follow the suggested action.
How to fix C4
This explains a payment adjustment. If you believe the claim was billed correctly, file a Remittance Advice Inquiry within the deadline; otherwise no resubmission is needed.
Payment-time codes appear on the monthly Remittance Advice after adjudication. Some are informational, some explain a reduced or refused payment. Where you disagree with the outcome, the usual route is a Remittance Advice Inquiry or written inquiry — not resubmitting the same claim, which can create a duplicate.
Related codes
- B8Service Not Eligible for Payment Virtually
- C1Allowed as repeat/limited consultation/midwife-requested emergency assessment
- C2Allowed at re-assessment fee
- C3Allowed at minor assessment fee
- C5Allowed as multiple systems assessment
- C6Allowed as Type 2 admission assessment
- C7An admission assessment (C003A) or general re-assessment (C004A) may not be claimed by any physician within 30 days following a pre- dental/pre-operative assessment
- C8Payment reduced to geriatric consultation fee-maximum number of comprehensive geriatric consultations has been reached
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Code meaning per Ontario Ministry of Health — Remittance Advice Explanatory Codes / Messages (March 2026). The suggested action is general information for Ontario physicians, not billing, legal, or tax advice — codes and rules change, so verify against the current Ministry of Health documents before relying on a claim.