On December 2, 2013, CMS published a proposed rule that would establish 2015 payment parameters and oversight provisions for federally-facilitated Health Insurance Exchanges under the ACA. The rule specifically addresses risk adjustment, reinsurance, and risk corridors programs; cost-sharing parameters and cost-sharing reductions; and user fees for federally-facilitated Exchanges. It also proposes additional standards for composite rating, privacy and security of personally-identifiable information, the annual open enrollment period for 2015, the actuarial value calculator, cost sharing for dental plans, the meaningful difference standard for qualified health plans offered through a federally-facilitated Exchange, patient safety standards for issuers of qualified health plans, and the Small Business Health Options Program. Comments will be accepted until December 26, 2013.