Healthcare Error Code
Healthcare Insurance / Medical Billing
Remittance Advice Remark Codes (RARC)
N151 | Missing documentation
Industry
Healthcare
Canonical
/healthcare/error-codes/n151/
Last Updated
Feb 25, 2026
Summary
This code indicates that required documentation was not submitted or was incomplete for claim processing.
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What This Code Means
N151 is used when the payer determines that supporting documentation necessary for adjudication is missing. This is an administrative requirement related to claim review. The code does not indicate that the service is non-covered. It reflects that the payer cannot complete processing without additional records. Documentation standards vary by payer and service type.
Where Users Usually See This Code
- Remittance advice remarks
- Explanation of Benefits (EOB)
- Documentation request notices
Why This Code Appears
- Required documents were not included
- Submitted documentation was incomplete
- Documentation did not meet payer criteria
What Typically Happens Next
- Claim processing is delayed or denied
- Additional review may be required
- Payment is not finalized
What This Code Is Not
- It is not a coverage denial
- It is not a billing format error
- It is not patient responsibility
Troubleshooting Checklist
- □ Review documentation requirements
- □ Confirm completeness of records
- □ Monitor claim status
Notes And Edge Cases
Documentation requests may occur during prepayment or post-payment review. Timing of submission can affect outcomes.
Related Codes
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