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The U.S. Supreme Court on Tuesday dealt a blow to the ability of Colorado and other states to put together databases of health-care costs at various health systems, ruling that self-insured health plans do not have to give information to governments on the amounts that they pay for certain claims.
After considering a lawsuit filed by an insurer against the state of Vermont, the court ruled in a 6-2 decision that states that attempt to collect such data impose an undue burden on the federally regulated…