Pharmacy reference

Pharmacy reject codes: meanings and next checks.

Search by code or message. Read the payer’s additional response before changing claim data.

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01M/I BIN NumberBIN field needs review
Next check

Compare the submitted BIN with the current card or eligibility response.

Published definition

Medi-Cal Rx Appendix D · April 1, 2026. The code description is published here; program-specific values and comments apply to Medi-Cal Rx, not every payer. The next check is a verification step, not an override instruction.

02Claim version needs reviewMissing or invalid field
What to verify

Check the transaction version configured in the pharmacy software against the payer sheet.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

03Transaction type needs reviewMissing or invalid field
What to verify

Check whether the intended action is billing, reversal, rebilling or eligibility, and compare the transmitted transaction type.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

04M/I Processor Control NumberPCN field needs review
Next check

Check the exact PCN, including leading zeros and casing, against the current payer route.

Published definition

Medi-Cal Rx Appendix D · April 1, 2026. The code description is published here; program-specific values and comments apply to Medi-Cal Rx, not every payer. The next check is a verification step, not an override instruction.

05Pharmacy identifier needs reviewMissing or invalid field
What to verify

Compare the submitted service-provider identifier with the payer sheet; Medi-Cal Rx specifies the pharmacy NPI.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

06M/I Group IDGroup field needs review
Next check

Check the current member group and the payer’s group-field requirements.

Published definition

Medi-Cal Rx Appendix D · April 1, 2026. The code description is published here; program-specific values and comments apply to Medi-Cal Rx, not every payer. The next check is a verification step, not an override instruction.

07M/I Cardholder IDMember field missing or invalid
Likely issue

The submitted member ID is blank, malformed, or does not match the plan's record.

Next check

Compare the value and any alpha prefix with the current card, then recheck eligibility before resubmitting.

08Person code needs reviewMissing or invalid field
What to verify

Compare the person code with the current member record, especially when several family members share a policy.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

09Birth-date field needs reviewMissing or invalid field
What to verify

Check the recorded date and transmitted format against the patient and eligibility records.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

10Patient gender field needs reviewMissing or invalid field
What to verify

Check the submitted field against the payer’s eligibility record and accepted values; do not change patient information simply to clear a reject.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

11Relationship field needs reviewMissing or invalid field
What to verify

Verify the patient’s relationship to the cardholder and the payer’s accepted relationship values.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

13M/I Other Coverage CodeOther-coverage result missing or invalid
Likely issue

The submitted Other Coverage Code is blank, invalid, or inconsistent with the other payer's result.

Next check

Review the primary payer response, then use the secondary payer's current OCC and COB instructions for that result.

15Service date needs reviewMissing or invalid field
What to verify

Check the actual service date and how the software transmitted it.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

16Prescription reference needs reviewMissing or invalid field
What to verify

Check the prescription/service reference number on the transaction and the intended prescription record.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

17Fill number needs reviewMissing or invalid field
What to verify

Compare the fill number with the prescription’s fill history; do not change it merely to bypass a refill restriction.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

19M/I Days SupplyDays-supply field missing or invalid
Likely issue

The submitted days supply is missing or fails the payer's edit, including a mismatch with quantity or directions.

Next check

Recompute it from the dispensed quantity and maximum use permitted by the directions, then follow the payer's rounding rule.

20Compound indicator needs reviewMissing or invalid field
What to verify

Verify that the compound indicator describes the preparation being billed.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

21M/I Product/Service IDProduct identifier missing or invalid
Likely issue

The product or service identifier is absent or invalid for the submitted claim.

Next check

Verify the reimbursement-format NDC and its padding against the package actually dispensed.

22M/I DAW/Product Selection CodeProduct-selection field missing or invalid
Likely issue

The payer reported field 408-D8 as missing or invalid under its claim rules.

Next check

Use the code that documents the actual selection decision, then follow the payer's additional message and current instructions.

23Ingredient-cost field needs reviewMissing or invalid field
What to verify

Review the transmitted ingredient-cost value and the applicable payer billing instructions.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

25M/I Prescriber IDPrescriber identifier missing or invalid
Likely issue

The prescriber identifier or qualifier is absent, malformed, inactive, or not the identifier the payer expects.

Next check

Validate the prescriber's current individual NPI and the submitted qualifier against the payer's instructions.

26Unit-of-measure field needs reviewMissing or invalid field
What to verify

Compare the submitted unit with the product and quantity being billed. Keep units distinct from package size.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

28Written-date field needs reviewMissing or invalid field
What to verify

Compare the date written with the original prescription documentation.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

29Authorized-refills field needs reviewMissing or invalid field
What to verify

Check the authorized refill count against the prescription record, separately from the number already dispensed.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

34Clarification field needs reviewMissing or invalid field
What to verify

Check the submitted clarification code against the documented circumstance and the payer sheet. This reject does not tell you which replacement code to use.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

39M/I Diagnosis CodeDiagnosis field missing or invalid
Likely issue

The submitted diagnosis code is blank, malformed, or not accepted for the claim as submitted.

Next check

Confirm whether the payer requires a diagnosis and submit only a code supported by the prescription or prescriber documentation.

40Pharmacy Not Contracted With Plan On Date Of ServiceNetwork participation not established
Likely issue

The processor does not recognize the pharmacy as contracted for this plan on the submitted date of service.

Next check

Confirm the intended benefit and date of service, then verify the pharmacy's current network or enrollment status with the processor.

41Submit Bill To Other Processor Or Primary PayerOther coverage pays first
Likely issue

The response indicates that another payer must adjudicate the claim first.

Next check

Bill the primary payer, then use the secondary payer's current OCC and COB instructions with the primary response.

50Non-Matched Pharmacy NumberSubmitted pharmacy identifier did not match
Likely issue

The processor cannot match the submitted pharmacy service-provider identifier to its records for this transaction.

Next check

Verify the submitted pharmacy identifier and qualifier, then confirm enrollment or routing with the processor before resubmitting.

51Non-Matched Group IDGroup does not match
Next check

Compare the submitted group with the member’s current plan record.

Published definition

Medi-Cal Rx Appendix D · April 1, 2026. The code description is published here; program-specific values and comments apply to Medi-Cal Rx, not every payer. The next check is a verification step, not an override instruction.

52Non-Matched Cardholder IDMember identifier does not match
Next check

Check the member identifier against the current card and eligibility response.

Published definition

Medi-Cal Rx Appendix D · April 1, 2026. The code description is published here; program-specific values and comments apply to Medi-Cal Rx, not every payer. The next check is a verification step, not an override instruction.

54Non-Matched Product/Service ID NumberSubmitted product did not match
Likely issue

The processor cannot match the submitted product or service identifier.

Next check

Compare the NDC with the dispensed package and the payer's response or current product data.

559Pharmacy sanction reportedCoverage, eligibility or processing check
What to verify

Verify the submitted pharmacy identifier and ask the payer to clarify the sanction record. Do not switch identifiers to evade the restriction.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

56Prescriber identifier did not matchCoverage, eligibility or processing check
What to verify

Compare the transmitted prescriber identifier and qualifier with the documented prescriber and payer requirements; distinguish this from a coverage restriction under 71.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

569Provide Notice: Medicare Prescription Drug Coverage and Your RightsMedicare Part D pharmacy notice
What the code points to

Caremark’s December 1, 2022 reject list, page 18, publishes this notice-related description. It does not identify the underlying coverage issue by itself.

Next check

Read the accompanying reject and current plan instructions. CMS publishes the Medicare Drug Coverage and Your Rights notice (CMS-10147) and instructions. Use those instructions for the notice workflow; this code is not an override or a coverage approval.

60Age-related product restrictionCoverage, eligibility or processing check
What to verify

Verify the patient’s date of birth, product and service date, then read the plan’s age-specific coverage message.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

606Brand or labeler restrictionCoverage, eligibility or processing check
What to verify

Check the exact product/NDC requested by the payer and the prescription’s selection requirements. This code does not itself authorize substitution or a different DAW value.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

61Gender-related product restrictionCoverage, eligibility or processing check
What to verify

Check the submitted patient field and exact product against the response. Resolve a record discrepancy with the payer rather than changing accurate information to obtain coverage.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

62Patient/Card Holder ID Name MismatchName and identifier do not match
Next check

Compare the submitted name and member identifier with the payer’s eligibility record.

Published definition

Medi-Cal Rx Appendix D · April 1, 2026. The code description is published here; program-specific values and comments apply to Medi-Cal Rx, not every payer. The next check is a verification step, not an override instruction.

620Possible Part D benefit routeCoverage, eligibility or processing check
What to verify

Check the member’s Part D coverage and the accompanying routing message. “May be covered” is not confirmation of payment.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

63Institutional-setting restrictionCoverage, eligibility or processing check
What to verify

Check the recorded patient setting and the benefit’s instructions for that setting.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

64Claim Submitted Does Not Match Prior AuthorizationClaim and authorization differ
Next check

Compare the claim with the approved authorization and its dates and conditions.

Published definition

Medi-Cal Rx Appendix D · April 1, 2026. The code description is published here; program-specific values and comments apply to Medi-Cal Rx, not every payer. The next check is a verification step, not an override instruction.

645Repackaged product restrictionCoverage, eligibility or processing check
What to verify

Verify the package NDC actually dispensed and the payer’s contract-specific product restriction.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

65Patient Is Not CoveredCurrent eligibility not established
Likely issue

The member data does not establish active coverage for this claim.

Next check

Verify current eligibility and plan information before changing or resubmitting the claim.

66Maximum-age restrictionCoverage, eligibility or processing check
What to verify

Verify the date of birth and date of service, then identify the applicable age limit in the plan’s response.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

67Filled Before Coverage EffectiveService date precedes coverage
Next check

Check the actual service date and the plan’s coverage start date.

Published definition

Medi-Cal Rx Appendix D · April 1, 2026. The code description is published here; program-specific values and comments apply to Medi-Cal Rx, not every payer. The next check is a verification step, not an override instruction.

68Filled After Coverage ExpiredService date follows expiration
Next check

Check coverage for the actual service date; do not change a date merely to obtain payment.

Published definition

Medi-Cal Rx Appendix D · April 1, 2026. The code description is published here; program-specific values and comments apply to Medi-Cal Rx, not every payer. The next check is a verification step, not an override instruction.

69Filled After Coverage TerminatedFill date follows plan termination
Likely issue

The date of service falls after the coverage termination date in the payer's record.

Next check

Confirm whether the patient has a current plan and bill the coverage active for the fill date.

6EM/I Other Payer Reject CodePrimary-payer reject detail missing or invalid
Likely issue

The other payer's reject code is absent, invalid, or inconsistent with the submitted COB detail.

Next check

Compare the primary response with the secondary payer's required other-payer fields and submit only the returned reject information it accepts.

6ZProvider eligibility restrictionCoverage, eligibility or processing check
What to verify

Check which provider identifier the response concerns and the payer’s eligibility requirements for this service or product.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

70Product/Service Not CoveredSubmitted product or service is not covered
Likely issue

The current benefit does not cover the submitted product or service in this context.

Next check

Use the payer's message to determine whether a covered NDC, alternative, exception, or authorization path exists.

71Prescriber coverage restrictionCoverage, eligibility or processing check
What to verify

Verify the prescriber identifier and ask the payer to distinguish an identifier problem from an enrollment or coverage restriction.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

73Refill coverage restrictionCoverage, eligibility or processing check
What to verify

Compare the fill history and submitted fill number, then review the benefit’s refill restriction.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

75Prior Authorization RequiredCoverage requires payer review
Likely issue

The plan requires authorization review before it may cover the drug.

Next check

Follow the plan's authorization process and coordinate required information with the prescriber. Approval is not guaranteed.

76Plan Limitations ExceededClaim exceeds a benefit limit
Likely issue

The claim exceeds a quantity, days-supply, network, or other limit applied by the plan.

Next check

Determine which limit fired and whether the payer permits another dispensing path, clarification, or authorization.

77Discontinued Product/Service ID NumberSubmitted identifier is discontinued
Likely issue

The submitted NDC is no longer active in the processor's product data.

Next check

Confirm the NDC on the stock actually dispensed and use the payer's current product instructions.

78Cost limit reachedCoverage, eligibility or processing check
What to verify

Review the transmitted cost fields and the specific limit named by the payer; do not alter an accurate amount solely to pass the edit.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

79Refill Too SoonPlan says insufficient time has elapsed
Likely issue

The plan's refill threshold has not been reached, sometimes because the prior fill carried an incorrect days supply.

Next check

Verify the prior fill first. If it is correct, follow the payer's documented override, help-desk, clarification-code, or waiting process.

7YCompound coverage restrictionCoverage, eligibility or processing check
What to verify

Check whether the benefit covers the preparation and whether the payer offers a documented review path.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

7ZCompound ingredient count too lowCoverage, eligibility or processing check
What to verify

Compare the transmitted ingredient count and ingredient records with the actual preparation.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

80Diagnosis does not meet coverage criteriaCoverage, eligibility or processing check
What to verify

Compare the documented diagnosis with the payer’s clinical criteria. Unlike 39, this response concerns coverage criteria, not simply a missing or invalid field. Do not select a different diagnosis to obtain payment.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

81Timely Filing ExceededSubmission is outside the filing window
Next check

Check the service date and the payer’s filing or exception process.

Published definition

Medi-Cal Rx Appendix D · April 1, 2026. The code description is published here; program-specific values and comments apply to Medi-Cal Rx, not every payer. The next check is a verification step, not an override instruction.

816Excluded from pharmacy benefitCoverage, eligibility or processing check
What to verify

Identify the excluded benefit and the payer’s next instruction. Medi-Cal Rx’s note addresses physician-administered drugs under the medical benefit; do not generalize that instruction to every payer or product.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

82Claim Is Post-DatedClaim carries a future service date
Next check

Verify the actual service date and correct a genuine entry error.

Published definition

Medi-Cal Rx Appendix D · April 1, 2026. The code description is published here; program-specific values and comments apply to Medi-Cal Rx, not every payer. The next check is a verification step, not an override instruction.

83Duplicate Paid/Captured ClaimA matching transaction may already be paid
Likely issue

The processor found a previously paid or captured claim that matches the submitted transaction.

Next check

Check claim history for the same patient, product, prescription, refill, and date of service before retransmitting or reversing anything.

84Claim Has Not Been Paid/CapturedNo paid or captured claim found
Next check

Check the original transaction’s final status before attempting another transaction.

Published definition

Medi-Cal Rx Appendix D · April 1, 2026. The code description is published here; program-specific values and comments apply to Medi-Cal Rx, not every payer. The next check is a verification step, not an override instruction.

85Transaction was not processedCoverage, eligibility or processing check
What to verify

Retain the full response and establish the claim’s status with the processor before deciding whether to resubmit.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

87Reversal Not ProcessedRequested reversal did not complete
Next check

Match the reversal to the original paid claim and confirm its status before retrying.

Published definition

Medi-Cal Rx Appendix D · April 1, 2026. The code description is published here; program-specific values and comments apply to Medi-Cal Rx, not every payer. The next check is a verification step, not an override instruction.

88DUR Reject ErrorClinical utilization edit returned
Likely issue

The response identifies a DUR edit, with the detailed conflict supplied in the accompanying response fields.

Next check

Evaluate and document the clinical issue, then submit only the intervention and outcome values the payer accepts when warranted.

890State Medicaid enrollment issueCoverage, eligibility or processing check
What to verify

Verify the pharmacy identifier and enrollment for the named state program and service date.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

8HProduct requires compound billingCoverage, eligibility or processing check
What to verify

Verify whether the product was used in a compound and whether the transmitted claim represents the actual preparation.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

90Processor ended the connectionCoverage, eligibility or processing check
What to verify

Check the software’s transaction status and processor response before retrying; the interruption alone does not establish whether another submission is appropriate.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

91Processor response could not be handledCoverage, eligibility or processing check
What to verify

Retain the response and have the software vendor or processor review the transaction; separate this from a coverage denial.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

92Processor unavailableCoverage, eligibility or processing check
What to verify

Check the processor’s availability and the transaction status before following its retry instructions.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

99Host Processing ErrorProcessor could not complete the transaction
Likely issue

The processor reported an internal host error rather than a specific claim-field or coverage edit.

Next check

Confirm whether the original transaction reached a final status before resubmitting, then follow the processor's outage or help-desk instructions.

9GQuantity Dispensed Exceeds Maximum AllowedSubmitted quantity exceeds the payer limit
Likely issue

The dispensed quantity is above the maximum the payer applies to this product or claim.

Next check

Verify quantity and days supply, then determine whether the payer permits a smaller covered fill, an exception, or authorization.

9KCompound ingredient count too highCoverage, eligibility or processing check
What to verify

Compare the transmitted ingredient count with the payer’s supported limit. Medi-Cal Rx names a 25-ingredient limit; other payer requirements need their own source.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

9QAdministration-route restrictionCoverage, eligibility or processing check
What to verify

Check the product and submitted route against the prescription and the payer’s coverage message.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

9TAuthorization-type restrictionCoverage, eligibility or processing check
What to verify

Compare the submitted authorization type with the payer’s instructions and the authorization actually issued.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

A1Prescriber sanction reportedCoverage, eligibility or processing check
What to verify

Verify the prescriber identifier and have the payer clarify the sanction record; do not substitute another prescriber’s identifier.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

A2Prescriber record marked deceasedCoverage, eligibility or processing check
What to verify

Check the submitted identifier for a mismatch and have the payer resolve the record discrepancy before further billing.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

A5Part D statutory exclusion reportedCoverage, eligibility or processing check
What to verify

Read the exact exclusion and current plan instructions. Distinguish this response from a formulary restriction or a missing authorization.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

A6Possible Part B benefit routeCoverage, eligibility or processing check
What to verify

Verify the product, documented use and applicable benefit requirements. This response does not guarantee Part B coverage.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

AASpenddown requirement unresolvedCoverage, eligibility or processing check
What to verify

Check the member’s eligibility and spenddown status with the applicable program; the code alone does not establish the amount still owed.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

AFManaged-care enrollment reportedCoverage, eligibility or processing check
What to verify

Verify the member’s managed-care plan and date-specific pharmacy routing rather than assuming the fee-for-service route applies.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

B2Pharmacy identifier qualifier needs reviewMissing or invalid field
What to verify

Check that the qualifier matches the type of pharmacy identifier submitted and the payer sheet.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

DO1Payment-plan participation not foundMedicare Prescription Payment Plan · letter O
What to verify

Verify enrollment in the Medicare Prescription Payment Plan and the sponsor receiving the secondary claim.

Source and scope

NCPDP Medicare Part D FAQ · August 2026, section 3.8. These codes concern the payment-plan secondary claim response. They are not general drug-coverage rejects. The verification prompt is an editorial checklist.

DO2Matching Part D claim not foundMedicare Prescription Payment Plan · letter O
What to verify

Check that the corresponding Part D transaction exists and matches the payment-plan submission.

Source and scope

NCPDP Medicare Part D FAQ · August 2026, section 3.8. These codes concern the payment-plan secondary claim response. They are not general drug-coverage rejects. The verification prompt is an editorial checklist.

DO3Claim ineligible for the payment planMedicare Prescription Payment Plan · letter O
What to verify

Read the eligibility response for this claim and the plan’s instructions. Payment-plan eligibility is a separate question from Part D drug coverage.

Source and scope

NCPDP Medicare Part D FAQ · August 2026, section 3.8. These codes concern the payment-plan secondary claim response. They are not general drug-coverage rejects. The verification prompt is an editorial checklist.

DXPatient-paid amount needs reviewMissing or invalid field
What to verify

Review the transmitted patient-paid amount and the payer’s definition of that field; do not confuse it with another payment or responsibility amount.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

M1Aid-category coverage restrictionCoverage, eligibility or processing check
What to verify

Verify the member’s eligibility category and the program’s coverage for the service date.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

M4Prescription reference or time limit issueCoverage, eligibility or processing check
What to verify

Read the additional message to distinguish a prescription-reference issue from the applicable time limit.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

MRProduct Not on FormularyDrug is outside the current formulary
Likely issue

The submitted product is not on the plan's formulary for this claim.

Next check

Use the payer's message to identify a covered alternative, formulary exception, or authorization path; do not substitute without appropriate authorization.

N1Patient record not foundCoverage, eligibility or processing check
What to verify

Compare the submitted patient identifiers and demographics with the current eligibility record.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

PZProduct and unit do not matchCoverage, eligibility or processing check
What to verify

Check the unit against the exact product and quantity. Distinguish a mismatch from a missing or invalid unit under 26.

Source and scope

Medi-Cal Rx Appendix D · April 1, 2026. The heading summarizes the published code meaning. The verification prompt is an editorial checklist, not a payer-approved resolution or override.

New entries use plain-language headings and cite their dated sources; verification prompts are editorial checks. Original published text is checked against the Medi-Cal Rx and Missouri state code lists, with Caremark’s dated source cited separately for 569. The expanded workflow notes are directional, not universal: the July 2026 Medi-Cal Rx Provider Manual and New York Medicaid's product-rejection guidance illustrate why the additional message and payer instructions control the actual resolution.

Some codes overlap without being interchangeable. MR (Product Not on Formulary) and 70 both signal coverage issues, but the payer's response message and current instructions determine the next step. A refill-too-soon condition can surface as either 79 or a DUR edit under 88, depending on the plan; the published Medi-Cal list explicitly cross-references the two.

Coverage and diagnosis follow-up

For 70, 75, 76 or MR, open the formulary directory to find the right plan’s drug list and the payer-document directory for its instructions. For a diagnosis-field question, compare the documented value with the ICD-10-CM reference; never choose a diagnosis just to clear a reject.

Similar rejects, different questions

39 versus 80
39 concerns the diagnosis field; 80 concerns whether the submitted diagnosis meets drug coverage criteria. Check the documented condition and the payer’s message. Diagnosis reference.
75 versus 76
75 points to authorization; 76 points to a plan limit. The response determines whether an authorization request, a limit review or another action is needed.
79 versus 88
79 names refill timing; 88 identifies a DUR rejection. Medi-Cal Rx cross-references refill timing to DUR, but the underlying DUR detail and payer instructions still matter.
70 versus MR
70 is a broader product/service coverage response; MR identifies a formulary issue. Check the exact product and benefit before treating either as a substitution instruction.

Code distinctions are based on Medi-Cal Rx Appendix D · April 2026. They are not universal resolution instructions.

How to read a pharmacy claim reject

Pharmacy claim adjudication is a real-time transaction. When you submit a claim, the pharmacy management system packages it in the NCPDP Telecommunication Standard (the messaging format the industry runs on) and sends it to a claims processor. The processor answers in seconds while the patient is still at the counter.

The BIN or IIN and PCN route the claim to a processor and plan or line of business; Group may further identify the employer or benefit group. Incorrect routing or member data can send the claim to the wrong benefit and produce a rejection. For the broader context, see what prescription data entry actually involves.

The processor then runs the claim against the plan's rules, including eligibility, coverage, quantity, and refill timing, and returns an adjudication response. A paid response carries pricing information; a rejected response carries one or more codes explaining the issue. Those codes come from a standard list maintained by the National Council for Prescription Drug Programs (NCPDP). The full list is licensed, but state Medicaid programs publish working subsets, and the listed codes are drawn from those publications.

One convention in the code list: a code that starts with M/I means Missing or Invalid. The plan isn't saying the value is wrong in the world. It's saying the field is blank, malformed, or doesn't match what the plan expects in that position. The payer's additional message and current instructions remain authoritative.

About this code list

This selected NCPDP reject-code list brings together published code descriptions and checks for different pharmacy workflows. They are not a nationwide frequency ranking: the Louisiana Medicaid SFY 2023 denied-claims appendix is one state-program example, not evidence of uniform frequency across payers. Each entry keeps the published text and payer-bounded next checks together.

Which pharmacy rejects point to data-entry issues?

Several codes in the directory can trace back to prescription, patient, product, or claim data. The codes map to the work this way:

  • 07 (Cardholder ID), 13/6E (other-payer detail), 41 (other processor), and 65/69 (not covered / terminated) point first to member or insurance information. A new card is a data-entry event, not a filing one: a transposed member ID or a stale card in the profile can be the difference between paid and rejected.
  • 19 (Days Supply), 76 (Plan Limitations Exceeded), and 9G (quantity exceeds maximum) are the quantity-and-days-supply group. The submitted values may be internally inconsistent or may exceed a payer limit even when entered correctly.
  • 21/54 (Product/Service ID) and 22 (DAW) are the drug field. A malformed NDC, a code for the wrong package, or a DAW that doesn't match who chose the brand all reject here.
  • 25 (Prescriber ID) and 39 (Diagnosis Code) point to prescriber or clinical claim data. Verify the documented value and payer requirement rather than supplying one by inference.
  • 50 (Pharmacy Number) points to the submitting pharmacy's identifier, qualifier, enrollment, or routing rather than patient data.

The instructive one is 79, refill too soon. It can look like a timing problem today but trace back to days supply on the last fill: a 30 keyed where the insulin math said 37 starts the plan's refill clock early, and the reject lands weeks later on a claim that was entered correctly. The claim that rejects is not necessarily the one with the original entry problem. Each field and its failure mode is walked through in what prescription data entry actually is. When one of these codes returns, the next move may be correcting the earlier field rather than resubmitting the same claim.

Which pharmacy rejects come from plan rules?

Codes 70, 75, 76, 9G, MR, and some instances of 79 can reflect the plan's coverage rules rather than a pharmacy error. The claim may be clean and the answer may still be no, or not yet. These rejects usually need a conversation with the patient or prescriber, not another trip through data entry.

75, prior authorization required. The plan requires authorization review before it may cover the drug. Follow the plan's process, coordinate the required information with the prescriber, and explain the current status to the patient. Approval and timing are payer-specific.

76, plan limitations exceeded. A claim can exceed a quantity, days-supply, network, or other plan limit even when the prescription is valid. Determine whether the plan permits a covered partial quantity, mail-order or network option, exception, or authorization, and whether changing the dispense requires prescriber clarification.

70 (and MR), product not covered / not on formulary. Check whether the issue applies to the drug, the submitted NDC, or the benefit. The available path may be a covered alternative, another covered package, a formulary exception, prior authorization, or no covered option under the current plan.

79, refill too soon. Verify the previous fill's date and days supply first. If they are correct, use the payer's documented process for the specific reason, which may involve an authorized override, a Submission Clarification Code, a help-desk call, or waiting until the eligible date.

First identify whether a rejection reflects incorrect claim data or a benefit rule. Correct data errors; route benefit issues through the payer, prescriber, or other process the current instructions require.

Sources9 linked sources
Reference status9 linked sources
Sources checked

95 selected entries, including all 91 codes in Medi-Cal Rx’s April 2026 appendix and a separately sourced Medicare notice code and three payment-plan codes. Public-source coverage is not the complete current NCPDP code set. Payer messages and current instructions govern resolution.

FAQ

Questions worth asking.

What does pharmacy reject code 70 mean?

Reject code 70 is "Product/Service Not Covered." It says the submitted product or service is not covered under the response's benefit rules. Check the accompanying message to see whether it points to the product, NDC, or benefit; do not infer that another product will be covered.

What does NCPDP reject code 75 mean?

Reject code 75 is "Prior Authorization Required." The plan requires authorization review before it may cover the drug. Follow the plan's process and coordinate the required information with the prescriber. Approval and timing are payer-specific.

Why do pharmacy claims get rejected?

Pharmacy claims can reject for eligibility, formulary and coverage, quantity and days-supply limits, refill timing, prior authorization, coordination of benefits, or field-level mismatches. The returned code and additional message show whether the first check belongs in claim data or in the payer's coverage process.

What is the difference between reject code 76 and 79?

Code 76, "Plan Limitations Exceeded," means the claim exceeds a quantity, days-supply, network, or other plan limit. Code 79, "Refill Too Soon," means not enough of the last fill's days supply has elapsed by the plan's threshold. For 76, confirm whether the plan permits a covered partial quantity or another path and whether clarification is required. For 79, verify the prior fill and follow the payer's permitted override, clarification-code, help-desk, or waiting process.

Does M/I mean the value is wrong on an NCPDP reject?

M/I stands for "Missing or Invalid." It means the field is blank, malformed, or doesn't match what the plan expects in that position. It does not necessarily mean the value is wrong in the world. For example, code 25 (M/I Prescriber ID) often fires because a group NPI was sent where the plan wanted the individual prescriber's NPI, not because the number is fake.

What is a DUR reject error in pharmacy?

Reject code 88 is "DUR Reject Error." It indicates that a drug-utilization review edit returned, with the conflict details supplied in the accompanying response fields. Evaluate and document the issue, then use only the intervention and outcome values the payer accepts; the code alone does not identify the clinical resolution.