Remittance Advice · Payment-time (remittance)
OHIP explanatory code L5
Not allowed in addition to other procedure paid to another laboratory
What L5 means
The Ministry of Health’s official wording for L5 is: “Not allowed in addition to other procedure paid to another laboratory.”
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 L5
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
- L1This service paid to another laboratory
- L2Not allowed to medical Laboratory Director
- L3Not allowed in addition to other laboratory procedure(s)
- L4Not allowed to attending physicians
- L6Procedure paid previously to another laboratory, not allowed in addition this procedure-fee adjusted to pay the difference
- L7Not allowed-referred specimen
- L8Not to be claimed with prenatal/fetal assessment
- L9Laboratory services for hospital in-patients or out-patients are not payable on a fee-for-service basis-included in the hospital global budget
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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.