For details on known specific payer denials see this article.
| Denial Remark Code | Description |
| 29 | The time limit for filing has expired |
| M115 | This item is denied when provided to this patient by a non-contract or non-demonstration supplier. |
| M130 | Missing invoice or statement certifying the actual cost of the lens, less discounts, and/or the type of intraocular lens used. |
| M49 | Missing/incomplete/invalid value code(s) or amount(s). |
| M50 | Missing/incomplete/invalid revenue code(s). |
| M51 | Missing/incomplete/invalid procedure code(s). |
| M53 | Missing/incomplete/invalid days or units of service. |
| M62 | Missing/incomplete/invalid treatment authorization code. |
| M86 | Service denied because payment already made for same/similar procedure within set time frame. |
| M97 | Not paid to practitioner when provided to patient in this place of service. Payment included in the reimbursement issued the facility. |
| MA04 | Secondary payment cannot be considered without the identity of or payment information from the primary payer. The information was either not reported or was illegible. |
| MA30 | Missing/incomplete/invalid type of bill. |
| MA39 | Missing/incomplete/invalid gender. |
| MA43 | Missing/incomplete/invalid patient status. |
| MA46 | Alert: The new information was considered but additional payment will not be issued.' |
| MA61 | Missing/incomplete/invalid social security number. |
| MA67 | Alert: Correction to a prior claim.' |
| MA74 | Alert: This payment replaces an earlier payment for this claim that was either lost, damaged or returned.' |
| MA130 | Your claim contains incomplete and/or invalid information, and no appeal rights are afforded because the claim is unprocessable. Please submit a new claim with the complete/correct information. |
| N522 | Duplicate of a claim processed, or to be processed, as a crossover claim. |
| N122 | Add-on code cannot be billed by itself. |
| N130 | Consult plan benefit documents/guidelines for information about restrictions for this service. |
| N161 | This drug/service/supply is covered only when the associated service is covered. |
| N192 | Patient is a Medicaid/Qualified Medicare Beneficiary. |
| N199 | Additional payment/recoupment approved based on payer-initiated review/audit. |
| N20 | Service not payable with other service rendered on the same date. |
| N216 | We do not offer coverage for this type of service or the patient is not enrolled in this portion of our benefit package. |
| N23 | Alert: Patient liability may be affected due to coordination of benefits with other carriers and/or maximum benefit provisions.' |
| N255 | Missing/incomplete/invalid billing provider taxonomy. |
| N257 | Missing/incomplete/invalid billing provider/supplier primary identifier. |
| N271 | Missing/incomplete/invalid other provider secondary identifier. |
| N274 | Missing/incomplete/invalid other payer other provider identifier. |
| N290 | Missing/incomplete/invalid rendering provider primary identifier. |
| N292 | Missing/incomplete/invalid service facility name. |
| N30 | Patient ineligible for this service. |
| N302 | Missing/incomplete/invalid other procedure date(s). |
| N34 | Incorrect claim form/format for this service. |
| N340 | Missing/incomplete/invalid subscriber birth date. |
| N362 | The number of Days or Units of Service exceeds our acceptable maximum. |
| N377 | Payment based on a processed replacement claim. |
| N380 | The original claim has been processed, submit a corrected claim. |
| N381 | Alert: Consult our contractual agreement for restrictions/billing/payment information related to these charges.' |
| N383 | Not covered when deemed cosmetic. |
| N4 | Missing/Incomplete/Invalid prior Insurance Carrier(s) EOB. |
| N418 | Misrouted claim. See the payer's claim submission instructions. |
| N420 | Claim payment was the result of a payer's retroactive adjustment due to a Coordination of Benefits or Third Party Liability Recovery. |
| N425 | Statutorily excluded service(s). |
| N428 | Not covered when performed in this place of service. |
| N431 | Not covered with this procedure. |
| N432 | Alert: Adjustment based on a Recovery Audit.' |
| N433 | Resubmit this claim using only your National Provider Identifier (NPI). |
| N448 | This drug/service/supply is not included in the fee schedule or contracted/legislated fee arrangement. |
| N471 | Missing/incomplete/invalid HIPPS Rate Code. |
| N479 | Missing Explanation of Benefits (Coordination of Benefits or Medicare Secondary Payer) |
| N52 | Patient not enrolled in the billing provider's managed care plan on the date of service. |
| N521 | Mismatch between the submitted provider information and the provider information stored in our system. |
| N522 | Duplicate of a claim processed, or to be processed, as a crossover claim. |
| N525 | These services are not covered when performed within the global period of another service. |
| N547 | A refund request (Frequency Type Code 8) was processed previously. |
| N56 | Procedure code billed is not correct/valid for the services billed or the date of service billed. |
| N569 | Not covered when performed for the reported diagnosis. |
| N640 | Exceeds number/frequency approved/allowed within time period. |
| N650 | This policy was not in effect for this date of loss. No coverage is available. |
| N657 | This should be billed with the appropriate code for these services. |
| N760 | This facility is not authorized to receive payment for the service(s). |
| N95 | This provider type/provider specialty may not bill this service. |