A policy opinion piece in the November 30, 2023 NEJM, by Kadakia et al., provides a fairly detailed overview of coverage problems at CMS, and the historically unsuccessful attempts to navigate them with either Parallel Review or with CED (Coverage with Evidence Development).
The authors describe the Trump administration MCIT proposal, its collision (and sinking) with Biden policymakers, and the still-in-progress CMS proposal to create "TCET," temporary coverage for emerging technologies. A table compares MCIT and TCET. (Below, click to enlarge).
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While having a somewhat guarded view of TCET - it relies on CED and strongly mirrors the Parallel Review flop in terms of the proposed process - the authors seem to conclude that at least CMS is moving forward with something (TCET).
NEJM includes a 9 minute podcast interview with coauthor Robert Yeh. Yeh is director of the Center for Outcomes at Beth Israel.