Preliminary 2020 Medicare clinical laboratory fee schedule (CLFS) payment determinations for new and reconsidered clinical lab test codes are now available for review.  For each code, the Centers for Medicare & Medicaid Services (CMS) announces whether it intends to use crosswalking or gapfilling to establish the payment rate, along with the agency’s rationale for its decision.  CMS will accept public comments on these preliminary determinations through October 27, 2019, and final determinations will be announced in November.