N818Remark Code (RARC)Active
N818 Remark Code - Claims Dates of Service Mismatch
The N818 remark code indicates that the dates of service on the claim do not align with the records in the Electronic Visit Verification (EVV) system. This discrepancy may lead to denials or adjustments based on the payer's review of the claim.
How It Relates to the Denial
The N818 remark typically accompanies adjustment reason codes related to date discrepancies, particularly those affecting home health services or similar types of care requiring verification through an EVV system. This combination signals that the payer has identified a mismatch between the claimed service dates and the documented dates in their electronic records.
Common Scenarios
1A home health agency submits a claim for services provided from January 1 to January 5, 2023, but receives an N818 remark on the remittance advice.
→ The N818 remark suggests that the EVV system has different dates recorded for the services rendered, indicating a need to verify the dates against the documentation in the EVV.
2A provider bills for a series of visits that occurred over a week but receives an adjustment with an N818 remark indicating a date mismatch.
→ In this case, the N818 indicates that the payer's EVV system has conflicting information regarding the dates of service, which must be clarified to resolve the claim.
3A claim for physical therapy services is submitted, but the remittance advice includes an N818 remark due to a mismatch with the EVV dates.
→ The N818 remark points to a need for the provider to check the EVV records, as the payer is citing inconsistencies between what was billed and what is documented in their system.
What to Do
- Verify the dates of service in the claim against the records in the Electronic Visit Verification system.
- If discrepancies exist, correct the claim with the accurate dates and resubmit it to the payer.
What to Check
- The claim form submitted for accuracy in the dates of service.
- The Electronic Visit Verification system records for the same service dates.
- Any communication from the payer regarding their electronic verification processes.