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Dental denial code lookup
The 30 CARC codes that hide most of the money on dental remittances. What each one means, whether it is worth appealing, and exactly how.
Procedure code inconsistent with the modifier used, or a required modifier is missing
The payer could not adjudicate the claim because the modifier does not match the procedure code, or a required modifier was left off. On dental claims this usually points to tooth, surface, quadrant, or arch reporting problems rather than true modifier disputes.
How to appeal itProcedure/revenue code inconsistent with the patient's age
The procedure billed conflicts with the patient's age on file, either because the plan limits the service to an age band or because the wrong code variant was billed for the patient's age.
How to appeal itThe diagnosis is inconsistent with the procedure
The payer's edits found that the diagnosis code does not support the procedure billed. On dental claims this is most common when billing medical payers or dental plans that require ICD-10 codes on the 837D.
How to appeal itThe authorization number is missing, invalid, or does not apply to the billed services or provider
An authorization exists somewhere in the process, but the number on the claim is missing, wrong, expired, or tied to a different service or provider than the one billed.
How to appeal itClaim/service lacks information or has submission/billing error(s)
The claim is missing information the payer needs to adjudicate it, or contains a submission error. The accompanying remittance advice remark codes specify exactly what is missing.
How to appeal itExact duplicate claim/service
The payer believes this claim or service line exactly duplicates one already received. Sometimes it truly does; on dental claims it is often two legitimate services that look identical to the payer's automated edits.
How to appeal itThis care may be covered by another payer per coordination of benefits
The payer believes another plan is primary for this patient and will not pay until the other payer's adjudication is on file. The dollars are usually recoverable, but only after the coordination of benefits chain is untangled.
How to appeal itThe impact of prior payer(s) adjudication, including payments and/or adjustments
This code reports how much of the billed amount was already accounted for by a prior payer's payment and adjustments. It appears with group code OA on secondary claims and is informational accounting rather than a true denial.
How to appeal itExpenses incurred prior to coverage
The payer's records show the date of service falls before the patient's coverage became effective, so the plan is refusing the entire charge.
How to appeal itExpenses incurred after coverage terminated
The payer shows the patient's coverage ended before the date of service. This clusters around job changes and is especially painful on multi-visit dental work completed after the termination date.
How to appeal itThe time limit for filing has expired
The claim arrived after the payer's filing deadline, which on dental plans commonly ranges from 90 days to one year from the date of service.
How to appeal itPatient cannot be identified as our insured
The payer cannot match the patient on the claim to a covered member. This is usually a data problem: wrong subscriber ID, misspelled name, wrong date of birth, or the wrong payer entirely.
How to appeal itCharge exceeds fee schedule/maximum allowable or contracted/legislated fee arrangement
The difference between your billed fee and the plan's allowed amount. For in-network dentists this is the contractual write-off: not money the patient owes, and usually not money anyone can recover.
How to appeal itNon-covered services: not deemed a medical necessity by the payer
The payer's reviewer decided the documentation does not establish that the service was necessary. On dental claims this is a documentation fight far more often than a genuine clinical dispute.
How to appeal itProcedure/treatment/device deemed experimental or investigational by the payer
The plan classifies the procedure as experimental or investigational and excludes it on that basis, regardless of the clinical result.
How to appeal itNon-covered charge(s)
The plan does not cover this service, and the accompanying remark codes name the specific exclusion. Recovery depends on whether the exclusion actually applies to the facts, not on persuading the payer to change the plan.
How to appeal itBenefit included in the payment/allowance for another service already adjudicated
The payer bundled this service into another procedure's payment. Sometimes that is correct under coding rules; on dental claims it frequently overreaches when the services were genuinely distinct.
How to appeal itClaim/service not covered by this payer/contractor; you must send the claim to the correct payer
You billed a payer that does not hold responsibility for this member or service. The fix is redirection, and speed matters because the correct payer's filing clock has been running the whole time.
How to appeal itBenefit maximum for this time period or occurrence has been reached
The plan has paid out the member's annual or lifetime maximum, so the balance shifts to the patient. It is correct much of the time, but worth checking because accumulator math and plan-year assignments are frequently wrong.
How to appeal itClaim specific negotiated discount
An adjustment reflecting a discount negotiated for this specific claim, most often seen on out-of-network dental claims routed through third-party repricing or negotiation vendors.
How to appeal itPayment adjusted because the information submitted does not support this many/frequency of services
The payer says the quantity or frequency billed exceeds what the plan allows or what the documentation supports. Dental plans are dense with frequency limits, so this code does heavy lifting on dental remittances.
How to appeal itThis (these) diagnosis(es) is (are) not covered
The plan does not cover services for the diagnosis reported. On dental claims this appears mostly on medically billed dentistry and on plans that require diagnosis codes for specific procedures.
How to appeal itPayment is denied when performed/billed by this type of provider
The plan will not pay this provider type for this service. On dental claims this surfaces around hygienists, new associates, and dentists billing medical plans for services the plan reserves for physicians.
How to appeal itPrecertification/authorization/notification/pre-treatment absent
The payer required prior authorization, precertification, or a pre-treatment review before the service and has no record of one. This is among the most appealable denials in dentistry, because retroactive authorization is widely available when clinical necessity is documented.
How to appeal itThis service/equipment/drug is not covered under the patient's current benefit plan
The member's specific plan design does not include this service. It differs from a general non-covered denial in that it points at the current plan's benefit package rather than a blanket exclusion.
How to appeal itInformation requested from the billing/rendering provider was not provided or was insufficient/incomplete
The payer asked your office for information, most often records or a questionnaire, and either received nothing or judged the response incomplete, then denied the claim.
How to appeal itThis procedure is not paid separately
The payer treats this procedure as part of another service and never pays it on its own line. The accompanying remark code indicates the payer's reasoning.
How to appeal itAn attachment/other documentation is required to adjudicate this claim/service
The payer will not decide the claim until it receives supporting documentation such as radiographs, charting, or a narrative. It is not a judgment on the merits, just a demand for evidence.
How to appeal itThis provider was not certified/eligible to be paid for this procedure/service on this date of service
The payer's records show the rendering provider was not credentialed, enrolled, or otherwise eligible for payment on the date of service. This is common with new associates whose credentialing lagged their start date.
How to appeal itDeductible amount
The amount applied to the member's deductible, assigned to patient responsibility. It is not a denial and is not recoverable from the payer; the work is accurate posting and clean patient collection.
How to appeal it