Many things will change with PDGM’s implementation Jan. 1, but some things will stay the same. For example: “Medicare Administrative Contractors (MACs) typically hold claims for a brief period each quarter when they implement system releases,” the Centers for Medicare & Medicaid Services notes in a message to providers. “This January, home health Requests for Anticipated Payment (RAPs) are affected by implementation of the Home Health Patient-Driven Groupings Model. MACs will hold RAPs with From Dates on or after January 1, 2020, and process them once the updates are complete.” How long completion of those updates will take may depend on any glitches resulting from the PDGM changes.