Error report · Service, fee & diagnosis
OHIP error code AD5
Procedure allowed previously
What AD5 means
The Ministry of Health’s official wording for AD5 is: “Procedure allowed previously.”
This code appears on your Claims Error Report (downloaded through MCEDT). It means the claim was rejected at submission and was never adjudicated for payment — fix the issue below and resubmit the claim.
How to fix AD5
This procedure was already billed for the patient - confirm it isn't a duplicate before resubmitting.
These codes relate to the fee schedule code, diagnosis code, fee amount, or service limits in the Schedule of Benefits. The fix usually starts with re-reading the code's payment rules — effective dates, age/sex limits, maximums, and combinations — for the date of service.
Related codes
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 — Error Report Rejection Conditions / Error Codes (December 2022). 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.