Reason Code 4 | Remark Code N519

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

Common Reasons for Denial

  • Modifier used is inconsistent with HCPCS code.
  • Modifier may be incorrect modifier for date of service on claim.
  • May be incorrect capped rental modifier for date of service being billed.
  • Modifier not required for HCPCS billed.

Next Step

  • Correct claim line with appropriate required modifier(s) and resubmit claim

How to Avoid Future Denials

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