Remittance Advice · Payment-time (remittance)
OHIP explanatory code DX
Diagnostic code not eligible with Fee Schedule Code
What DX means
The Ministry of Health’s official wording for DX is: “Diagnostic code not eligible with Fee Schedule Code.”
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 DX
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
- DRSelf-Referred Diagnostic Services Payable at 50%
- DTIn-patient technical fee not allowed
- DVService is included in Monthly Management Fee for Long-Term Care (LTC) patients
- DWProcedure paid previously not allowed in addition to monthly management. For long-term care patients-fee adjusted to pay the difference.
- E1Service date prior to start of eligibility
- E2Incorrect version code for service date
- E3Version Code not on File for HN (Health Number)
- E4Service date after the eligibility termination date
Tired of decoding rejections by hand?
MedConcierge explains every rejection on your reports and helps you fix and resubmit in clicks. OHIP billing built by physicians, for physicians.
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.