Governor Peter Shumlin and other senior state officials are going ahead with plans to ask for changes to federal rules in order to create a new system for paying health care providers. The state is asking for changes to federal Medicaid and Medicare rules to enable it to institute an "all-payer model." The aim is to get away from health providers being paid for individual visits and procedures, and instead give them a set budget with the goal of keeping a certain population healthy. Shumlin and other officials say they think they can stop health care costs from outpacing growth in the general economy.