Is Mastercard code 4863 still in use?

No. Mastercard retired 4863 as part of its dispute consolidation, and unrecognized-transaction claims are now filed under 4837 (No Cardholder Authorization). You may still see 4863 referenced in older reports or legacy processor systems.

What replaced 4863 for transactions a customer simply does not recognize?

Code 4837 absorbed these disputes. That matters because a charge the customer merely failed to recognize now carries the same fraud weight as a stolen-card claim, counting toward fraud monitoring programs. Preventing descriptor confusion is therefore more valuable than it was under the old code.

Mastercard · Fraud

Reason code 4863: Cardholder Does Not Recognize - Potential Fraud

Historically, code 4863 covered claims where a cardholder did not recognize a transaction on their statement and suspected fraud without outright asserting the card was stolen. Mastercard has retired this code and consolidated unrecognized-transaction disputes into 4837 (No Cardholder Authorization). You may still encounter 4863 on older chargeback reports and in legacy processor documentation, which is why it remains worth understanding.

Issuer filing window

typically 120 days from the central site business date

Merchant response window

typically 45 days to respond via second presentment

Why 4863 chargebacks happen

Your billing descriptor did not match your storefront brand, so the cardholder failed to connect the statement line to their purchase.
A trial offer converted to a paid charge weeks after signup, and the cardholder no longer associated the amount with your product.
The charge posted under a parent company or fulfillment partner name the customer had never seen.
A shared or corporate card was used by another authorized user, and the statement reviewer did not recognize the purchase.

How to fight a 4863 chargeback

Because these disputes now arrive under 4837, respond with the same evidence package: AVS and CVC2 results, device data, and any 3DS authentication records.
Provide the order confirmation email, IP address, and account details showing the cardholder's own information was used at checkout.
Attach proof of delivery or digital access logs demonstrating the cardholder received and used what they paid for.
Include a screenshot of your checkout and receipt showing the descriptor disclosure, which supports the argument that the charge was identifiable.

How to prevent 4863 chargebacks

Align your billing descriptor with the brand name customers actually see at checkout, and include a support phone number in the descriptor.
Send a post-purchase email that explicitly states how the charge will appear on the card statement.
For delayed or trial-conversion billing, send a reminder notification before the charge posts so the transaction is expected.
Register your descriptors with Verifi Order Insight and Ethoca Consumer Clarity so issuers can show cardholders transaction details in their banking app before a dispute is filed.

Frequently asked questions

Is Mastercard code 4863 still in use?: No. Mastercard retired 4863 as part of its dispute consolidation, and unrecognized-transaction claims are now filed under 4837 (No Cardholder Authorization). You may still see 4863 referenced in older reports or legacy processor systems.
What replaced 4863 for transactions a customer simply does not recognize?: Code 4837 absorbed these disputes. That matters because a charge the customer merely failed to recognize now carries the same fraud weight as a stolen-card claim, counting toward fraud monitoring programs. Preventing descriptor confusion is therefore more valuable than it was under the old code.

Related Mastercard codes