Remittance Advice · Payment-time (remittance)
OHIP explanatory code DD
Not allowed as diagnostic code is unrelated to original eye exam
What DD means
The Ministry of Health’s official wording for DD is: “Not allowed as diagnostic code is unrelated to original eye exam.”
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 DD
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
- D9Not allowed to a hospital department
- DAMaximum for this procedure reached - paid as repeat/chronic procedure
- DBOther dialysis procedure already paid
- DCProcedure paid previously not allowed in addition to this procedure- fee adjusted to pay the difference
- DELab tests already paid-visit fee adjusted
- DFCorresponding fee code was not billed or paid at zero
- DGDiagnostic/Miscellaneous services for hospital patients are not payable on a fee-for-service basis in the Hospital Global budget.
- DHVentilatory support allowed with Haemodialysis
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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.