OA-P3: Workers' Compensation Case Settled — Patient Responsibility

What Does OA-P3 Mean?

OA-P3 is uncommon but may appear when the settlement terms involve a redirect to another payer or arrangement beyond the patient's direct responsibility. This could occur in coordination-of-benefits situations where the settlement specifies that a secondary payer should cover certain costs.

CARC P3 appears when a workers' compensation case has reached a settlement and the patient has assumed responsibility for future medical costs related to the work injury. This code is exclusively for workers' compensation claims and is always paired with Group Code PR, because the settled WC case shifts the financial obligation directly to the patient.

The most common scenario behind P3 involves a Workers' Compensation Medicare Set-Aside Arrangement (WCMSA). When a WC case settles, a portion of the settlement may be allocated to cover future injury-related medical expenses. The patient must exhaust those WCMSA funds on qualifying medical services before Medicare or other payers step in. If the WCMSA funds are available, the provider should coordinate billing through the WCMSA administrator rather than billing the patient directly out of pocket.

P3 can catch providers off guard if they are unaware the patient's WC case has been settled. The carrier may have been paying claims for months or years before the settlement, and the transition from carrier-paid to patient-paid can happen abruptly. Providers who treat WC patients long-term should establish workflows to check WC case status at every visit. Once a P3 appears, the provider needs to understand the settlement terms — particularly whether a WCMSA exists, how much remains in the fund, and what services are covered — before determining the correct billing path.

How to Resolve

Review the settlement documentation, determine whether WCMSA funds are available, and collect the patient's share.

1. Review settlement terms for payer direction Examine the settlement agreement to identify which payer or arrangement should receive the claim based on the settlement terms.
2. Submit to the directed payer Redirect the claim to the payer specified in the settlement terms and include the settlement documentation as supporting evidence.
3. Follow up on claim status Track the redirected claim and follow up to ensure it is processed by the new payer according to the settlement terms.

How to Prevent OA-P3

• Maintain detailed records of all WC settlement terms for each patient
• Establish a checklist for WC settlements that includes identifying all responsible payers

Also Filed As

The same CARC P3 may appear with different Group Codes:

Related Denial Codes