PR-203: Discontinued or Reduced Service

What Does PR-203 Mean?

PR-203 appears when the patient is responsible for charges related to a service that was discontinued or reduced. This may occur when the patient voluntarily elected to stop treatment midway through, or when the reduced scope of service resulted in a patient cost-sharing amount.

CARC 203 fires when a payer determines that a service was either discontinued partway through or reduced from the original plan, and the claim does not properly reflect this change. The payer is saying that the billed amount does not align with what was actually delivered — either the provider billed for a full service when only a partial service was rendered, or the claim lacks the modifiers needed to indicate the reduced scope.

This denial is common in surgical settings where a procedure is started but discontinued due to patient complications, adverse reactions, or intraoperative findings that change the surgical plan. It also appears in therapy settings where a planned session is cut short, diagnostic procedures that are aborted midway, and infusion services that are interrupted. In each case, the payer expects the claim to reflect the actual service delivered, not the originally planned service.

The key to resolving CARC 203 is proper modifier usage. Modifier 52 (Reduced Services) signals that a service was partially completed by the physician's choice, while modifier 53 (Discontinued Procedure) indicates the procedure was terminated due to patient safety concerns after anesthesia was administered. Without these modifiers, the payer cannot properly adjudicate the claim and will deny it. Some payers also require adjusted charges that reflect the reduced scope rather than the full procedure fee.

Common Causes

How to Resolve

Verify that the claim accurately reflects the service delivered, apply appropriate modifiers, adjust charges if needed, and resubmit.

1. Confirm patient's decision to discontinue Verify that the patient's choice to stop or reduce the service is documented in the medical record. This protects the practice if the patient later disputes the charge.
2. Generate a patient statement Bill the patient for the service that was actually rendered, with a clear explanation of what was delivered versus what was originally planned.
3. Address patient questions If the patient questions why they owe for a partial service, explain that charges are based on the work performed regardless of whether the full service was completed.

How to Prevent PR-203

• Discuss financial implications with patients before they elect to discontinue or reduce a planned service
• Document the patient's decision and acknowledgment of financial responsibility for partial services
• Provide upfront cost estimates that include scenarios for both full and partial service delivery

General Prevention

• Document the patient's decision to discontinue or reduce treatment and have them acknowledge financial responsibility for services already rendered

Also Filed As

The same CARC 203 may appear with different Group Codes:

Related Denial Codes