CO 44 denial code

Claim adjustment reason code 44. Often reported as CO 44.

Prompt payment discount

Unofficial reference. This is our own plain-English explanation, not the official code text. Payer rules differ. Verify with the payer and the official X12 code list. AlphaPrefix is not affiliated with X12, CMS or any payer. Data last updated Nov 11, 2026.

What 44 means

The payment was reduced because the provider's contract gives the payer a discount for paying quickly.

Some contracts let a payer take a small discount if it pays within an agreed time. This code reports that discount.

It is a contractual reduction, usually under CO, and should match the discount terms in the contract. It is rare in most practices.

Group codes seen with 44

On a remittance, 44 comes after a group code. These are the ones it is most often reported with:

• CO 44 (Contractual Obligation): The provider's side of the ledger. The reduction comes from the payer contract or a rule the provider has to follow, and the patient normally cannot be billed for it.

The payer chooses the group code for each adjustment, so the same reason code can appear with another group code on your remittance. Read the two together. More about group codes.

Common causes

• The contract with the payer or network includes a prompt payment discount clause.
• The payer applied a discount from a rental network contract the provider participates in.
• The discount was applied even though the payment was not made within the agreed time.

What to do next

1. Check the contract for a prompt payment discount and its terms.
2. Confirm the payment was issued within the time the contract allows for the discount.
3. Post the discount as a contractual adjustment if it matches the contract.
4. Dispute the discount with the payer if the payment was late or no such clause exists.

Related codes

• 45 (reason code) Charge exceeds the allowed amount
• 24 (reason code) Covered under capitation or managed care
• 23 (reason code) Prior payer payment affected this claim