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CO-263 Code: Pharmaceutical Shipping Cost Adjustment

CO-263 is an adjustment for shipping cost, restricted to pharmaceuticals. The payer reduced or declined the shipping charge for a drug, such as carrier fees for mail-order or temperature-controlled shipments.

Code: CO-263 (CARC 263)
Status: Active In use since November 1, 2014; last modified July 1, 2017.
Code set: Claim Adjustment Reason Codes (CARC)
Group codes: CO (Contractual Obligation): The shipping amount not paid is absorbed by the pharmacy or provider under the contract and generally cannot be passed to the patient.
PR (Patient Responsibility): Applies when the plan treats expedited or optional shipping as a member expense.
Official description: Adjustment for shipping cost. Usage: To be used for pharmaceuticals only.
X12 Claim Adjustment Reason Codes, retrieved September 25, 2026
Last verified: September 24, 2026 against the official X12 list.

What CO-263 means

CARC 263 reads adjustment for shipping cost, with the usage restriction to be used for pharmaceuticals only. It tells you the payer adjusted what was billed to ship a medication.

Mail-order and specialty pharmacies often ship drugs by commercial carrier, sometimes overnight and with temperature control. Those costs can be significant. Whether a plan pays them depends on the pharmacy agreement: many build shipping into the dispensing fee or the ingredient reimbursement, and some pay a separate amount under certain conditions. When the payer does not pay what was billed for shipping, it reports the difference as CARC 263.

It is one of five related codes. Keeping them apart helps you see which cost component a payer is cutting: shipping here, delivery under CO-262, postage under CO-264, and administrative cost under CO-265.

Typical scenarios

A mail-order pharmacy bills overnight carrier shipping that the plan considers part of the dispensing fee.
A specialty pharmacy bills cold-chain packaging and shipping above the contracted amount.
Expedited shipping requested by the member is billed to a plan that only covers standard shipping.
Shipping billed for a network or plan that pays no separate shipping at all.

Shipping costs also vary by package. A refrigerated specialty drug shipped overnight in insulated packaging costs far more to send than a standard mail-order refill, yet many contracts pay the same dispensing fee for both. Documenting the actual shipping cost for high-cost shipments gives you evidence if you later negotiate separate reimbursement.

How to respond

Read the agreement to see whether shipping is reimbursed separately and at what rate.
Compare the paid amount with the contract. If it is lower than agreed, request reprocessing with the contract term.
If shipping is included in other reimbursement, post the adjustment and stop billing it separately.
If the member asked for expedited service and the plan reports it as PR, charge the member only in line with your disclosures.

How to prevent problems

Map every shipping method you use to each payer’s reimbursement rules.
Tell members about any out-of-pocket charge for expedited shipping before sending.
Review adjustments on remittances monthly; an ERA Analyzer can total shipping adjustments by payer to support contract negotiations.

Remark codes that may appear with CO-263

N381 (Alert: Consult our contractual agreement for restrictions/billing/payment information related to these charges.): Points to the contract section covering shipping reimbursement.

CO-262 (Adjustment for delivery cost.): Delivery cost, typically local courier or staff delivery rather than carrier shipping.
CO-264 (Adjustment for postage cost.): Postage cost, used for mailing through postal services.
CO-265 (Adjustment for administrative cost.): Administrative cost for pharmaceuticals.

CO-263 FAQ

How is shipping different from delivery or postage?

Payers use CARC 263 for shipping, 262 for delivery, and 264 for postage. In practice, shipping usually means a commercial carrier shipment, while postage refers to postal mailing costs. The payer's contract defines which it reimburses.

Do payers cover cold-chain shipping?

Some specialty pharmacy contracts include cold-chain packaging and shipping in the dispensing fee, and some reimburse it separately. Check your agreement.

Can a physician practice receive CO-263?

Rarely. It is limited to pharmaceuticals and mostly affects pharmacies and suppliers that ship drugs to patients.

Does CO-263 apply to DME shipping?

Its usage limits it to pharmaceuticals. Shipping adjustments on durable medical equipment would be reported with other codes under the payer's DME policies.

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