The White House Office of Management and Budget is looking at a proposed rule that would make changes to the accountable care organization program, including a transition to performance-based risk, more waivers and policies CMS says will make the ACO program sustainable, according to the office's website. OMB began reviewing the rule on the Medicare Shared Savings Program Tuesday (May 1). Lobbyists say they have been expecting ACO changes. “[W]e’re hoping to see CMS continue to make edits to the...