House and Senate Republicans are diving deeper into the consequences of the Biden administration’s Medicare Part D Premium demonstration, asking the Congressional Budget Office to provide a detailed breakdown of the cost of the Biden administration’s last-minute bid to avert expected Part D premium hikes in 2025 along with the average projected payout to individual prescription drug plan sponsors. The move comes after bicameral Republican leaders asked the Government Accountability Office to weigh in on the legality of CMS’ demonstration,...