The global COVID-19 crisis has led to many changes in health care rules, including in the Medicare program. Most of the Medicare changes are slated to be temporary, but advocates will need to watch which provisions do and do not remain after the crisis. While many of the changes affect health care providers, including payment and waivers of certain requirements, our Advocates Guide, Updated November 9, 2021, focuses on Medicare COVID changes that relate to beneficiaries and their access to covered care. Note: This Advocates Guide describes, but does not analyze or critique these changes.