Per a December 2024 post in the Social Security Update Archive, as of January 6, 2025, Social Security "will require customers to schedule an appointment for service in our local offices, including requests for Social Security cards."

This 10 days requirement is specific to people who believe their initial IRMAA amounts are factually incorrect. You have 10 days to contact Social Security to correct the initial IRMAA amounts. But what does this mean for appealing IRMAA amounts?