This post will look into thirdparty subrogation under the Pennsylvania Workers' Compensation Act. The right of the medical insurance company to collect payment for these bills is called subrogation.Select a value from the Reason Code drop-down box. Enter the amount of the adjustment for this claim in the Amount box at the end of the Adjustment 1 row. Subrogation for health plans. Identify, investigate, recover and prevent inaccurate payments linked to accident-related medical and disability expenses. In the Highmark Provider Manual, information about the coordination of billing and payment benefits is provided. Subrogation can be hard to understand. Our personal injury team explains what subrogation means when it comes to an injury lawsuit. Or, fill out our online contact form to schedule a free injury consultation.