Error report · Service, fee & diagnosis
OHIP error code AC1
Maximum reached-resubmit alternate Fee Schedule Code (FSC)
What AC1 means
The Ministry of Health’s official wording for AC1 is: “Maximum reached-resubmit alternate Fee Schedule Code (FSC).”
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 AC1
Resubmit using the correct alternate Fee Schedule Code, or confirm the frequency limit hasn't been reached.
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
- A34Multiple duplicate claims
- A3HMaximum Number Services per the Fee Schedule Master (FSM)
- A3IX-Ray Code - Maximum Number Services per the Fee Schedule Master (FSM)
- A3LOther New Patient Fee Already Paid
- AD3Not allowed with visit
- AD5Procedure allowed previously
- AD8Not allowed alone
- AD9Premium not allowed alone
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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.