CO-140CO group · Administrative

CO-140 denial code: patient/insured health ID number and name do not match

CO-140 is one of the most fixable denials there is — it's a data-match failure, not a coverage decision. The whole job is reconciling four fields against the payer's record.

CO-140 means the member identification number and the patient's name on the claim don't match what the payer has on file. It is an administrative, returned-to-provider denial that resolves with a corrected claim once the demographics are reconciled. It is only an appeal in the rare case where your data is correct and the payer's record is wrong.

What CO-140 means

Payers match each claim to a member on ID number plus name (and often date of birth). Any inconsistency — a typo, a maiden vs. married name, a dependent billed under the subscriber — fails the match and denies as CO-140.

Why CO-140 fires

  • A typo in the member ID or a transposed digit.
  • Name format differs from the card — maiden vs. married name, suffix, or hyphenation.
  • A dependent's service was billed under the subscriber's ID, or vice versa.
  • The payer's enrollment record itself contains the error.

Is CO-140 worth appealing?

Rarely an appeal — usually a fix

Almost always a correction, not an appeal: verify the member ID, full name, and date of birth against the insurance card and the payer's eligibility record, then resubmit. Appeal only when your submitted data is provably correct and the payer's record is the one in error.

How to resolve or appeal CO-140

  1. 1

    Reconcile against the card

    Match the member ID, name exactly as printed, and date of birth to the insurance card. Correct any difference and resubmit.

  2. 2

    Confirm subscriber vs. dependent

    Make sure a dependent's claim carries the correct member ID and the relationship is coded properly.

  3. 3

    Escalate a payer record error

    If your data matches the card and eligibility but the claim still denies, appeal with the eligibility verification showing the match.

CO-140 — frequently asked

Do I appeal or correct a CO-140?
Correct it. Reconcile the ID and name with the card and resubmit. An appeal only makes sense when your data is right and the payer's record is wrong.
Why does the name have to match exactly?
Payers auto-match claims to members on ID plus name (and usually DOB). A formatting difference — maiden name, suffix, hyphen — can fail the match even when it's the right person.

Related guides

CO-16 · AdministrativeCO-109 · EligibilityCO-22 · Coordination of benefits

Sources

Reason-code meanings are paraphrased from the X12 Claim Adjustment Reason Code list for plain-language reference; they are not reproduced verbatim. This is general information, not legal, coding, or medical advice — always confirm against the payer's remittance and policy.

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