In an opinion of significant importance to the administration of the Medicare program, the US Supreme Court issued a 7–1 decision requiring the Centers for Medicare & Medicaid Services (CMS) to follow notice and comment rulemaking when adopting a “statement of policy” that establishes or changes a “substantive legal standard.” The near unanimous Court upheld the DC Circuit Court’s decision in Allina Health Services v. Price, 863 F.3d 937, 939 (DC Cir. 2017), which highlighted an important distinction between Medicare Act and Administrative Procedure Act (APA) rulemaking requirements.
The APA establishes a statutory exemption from notice and comment rulemaking procedures in the case of “interpretive rules, general statements of policy . . . or agency . . . practice.” 5 USC § 553(b)(A) (emphasis added). CMS relied on an assumption that this “interpretive rule exception” applied to the policy it adopted in order to include Medicare Part C patient days in the Medicare fraction of the payment formula used to calculate the qualification for, and amount of, the Medicare disproportionate share hospital (DSH) payment adjustment. The policy resulted in the reduction of Medicare DSH payments for hospitals until 2013, when the agency furnished notice and comment. Like the DC Circuit, the Supreme Court rejected the government’s argument that the Medicare Act rulemaking requirement in 42 USC § 1395hh(a)(2) implicitly incorporated a similar interpretive rule exception permitting such a policy.