Whenever the Secretary publishes a general notice of proposed rulemaking for any rule or regulation proposed under subchapter XVIII, subchapter XIX, or part B of this subchapter that may have a significant impact on the operations of a substantial number of small rural hospitals, the Secretary shall prepare and make available for public comment an initial regulatory impact analysis. Such analysis shall describe the impact of the proposed rule or regulation on such hospitals and shall set forth, with respect to small rural hospitals, the matters required under
section 603 of title 5 to be set forth with respect to small entities. The initial regulatory impact analysis (or a summary) shall be published in the Federal Register at the time of the publication of general notice of proposed rulemaking for the rule or regulation.