M59Remark Code (RARC)Active
Effective 01/01/1997 · Updated 02/28/2003

M59 Remark Code - Missing/Invalid 'To' Date

The M59 remark code indicates that the claim has missing, incomplete, or invalid 'to' date(s) of service. This remark supplements an adjustment reason code that points to issues with the dates provided for services rendered, suggesting that the payer requires accurate date information to process the claim correctly.

How It Relates to the Denial

The M59 remark code typically accompanies adjustment reason codes related to claim denials or reductions due to date discrepancies. This combination signals that the payer cannot fully evaluate the claim due to the date issues specified in the accompanying reason code.

Common Scenarios

1A claim for a physical therapy session was submitted with a service date of 01/01/2023, but the remittance shows the M59 remark code.
→ In this case, the M59 remark suggests that the claim is missing the 'to' date for the therapy services, which is necessary for the payer to determine the service duration and appropriateness.
2A hospital billed for a series of outpatient services but received a remittance that included the M59 remark code alongside a denial for incomplete information.
→ The M59 indicates that one or more of the billed services lack a valid 'to' date, meaning the payer needs this information to assess the claim correctly.
3A claim for a surgical procedure was submitted with an incorrect 'to' date, and the remittance returned includes the M59 remark code indicating the issue.
→ The M59 remark code indicates that the provided 'to' date is either missing or invalid, which is preventing the payer from processing the claim.

What to Do

  1. Verify the 'to' date(s) of service on the claim and ensure they are accurate and complete.
  2. Correct any missing or invalid 'to' dates and prepare to resubmit the claim if necessary.
  3. Include clear documentation that supports the correct dates if appealing the denial.

What to Check

  • Review the claim form for the 'to' date of service field to confirm accuracy.
  • Check the service documentation to ensure that all dates of service are correctly recorded.
  • Consult the payer's policy for any specific requirements regarding date formatting or submission.