Error report · Service, fee & diagnosis
OHIP error code AM1
Service Limit Exceeded
What AM1 means
The Ministry of Health’s official wording for AM1 is: “Service Limit Exceeded.”
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 AM1
The service limit for this code has been exceeded - confirm the cap; only resubmit if a service was genuinely missed.
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
- AD9Premium not allowed alone
- ADFCorresponding Procedure Invalid, Omitted or Paid at zero
- ADHCannot be billed together
- AH8Invalid Admission Date and/or Hospital number.
- AHFConcurrent or Supportive Care Same Period
- AMSMultiple Procedures
- AO2Previous Obstetrical Service
- AO3Most Responsible Physician (MRP) Visit Already Paid
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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.