Reason Code 4 | Remark Code N519

Code Description
Reason Code: 4 The procedure code is inconsistent with the modifier used or a required modifier is missing.
Remark Code: N519 Invalid combination of HCPCS modifiers.


Common Reasons for Denial

  • HCPCS code is inconsistent with modifier used or required modifier is missing

Next Step

  • Correct claim line with appropriate required modifier and resubmit claim

How to Avoid Future Denials


Last Updated Dec 09 , 2023