Subrogation: "Stepping into the shoes" of another party to assert that party's rights. What is subrogation?Why am I being asked to waive it? If you are to recover money from a third party in a personal injury claim and the health insurance company has paid for your care they're entitled to be reimbursed. Gov for a printable version. The tone of a Subrogation Letter should be professional, firm, and clear, but not overly aggressive. A small claims case is filed in the clerk of superior court's office in the appropriate county. The forms may be printed and completed in advance. The State Health Plan has the right of subrogation upon its injured members' right to recover from any other liable party. Subrogation (sometimes shortened to "subro") is a way to protect you and your insurance company from paying for a car accident that wasn't your fault.