Healthcare Error Code
Healthcare Insurance / Medical Billing
Remittance Advice Remark Codes (RARC)
N503 | Incorrect billing
Industry
Healthcare
Canonical
/healthcare/error-codes/n503/
Last Updated
Feb 25, 2026
Summary
This code indicates that billing information was incorrect according to payer rules.
Advertisement after-summary
Ad Space
What This Code Means
N503 is used when billing data does not conform to payer requirements. This is a general billing validation remark. It does not specify the exact issue and typically supports other adjustment codes. The code does not imply coverage denial or service issues.
Where Users Usually See This Code
- Remittance advice remarks
- Claim adjustment notices
- Billing error summaries
Why This Code Appears
- Incorrect billing details submitted
- Coding or formatting errors
- Payer billing rules enforced
What Typically Happens Next
- Claim is denied or adjusted
- Reprocessing may be required
- Payment is delayed
What This Code Is Not
- It is not a coverage exclusion
- It is not patient responsibility
- It is not a contractual adjustment
Troubleshooting Checklist
- □ Review billing data accuracy
- □ Confirm payer billing standards
- □ Monitor resubmission requirements
Notes And Edge Cases
Incorrect billing remarks often accompany more specific error indicators. Automated edits commonly trigger this code.
Related Codes
8 links
Advertisement near-bottom
Ad Space