CMS has published in the federal register:

• A Rule for the Medicare Program: Prior Authorization Process for Certain Durable Medical Equipment, Prosthetics, Orthotics, and Supplies Items; Update to the Master List of Items Frequently Subject to Unnecessary Utilization
• A Rule for the Medicare Program: Update to the Required Prior Authorization List of Durable Medical Equipment, Prosthetics, Orthotics, and Supplies Items That Require Prior Authorization as a Condition of Payment