The law requires the Centers for Medicare & Medicaid Services (CMS) to remove Social Security numbers (SSNs) from all Medicare cards by April 2019. A new, unique Medicare number will replace the current Health Insurance Claim Number (HICN) on the new Medicare cards. We're taking this step to protect people with Medicare from fraudulent use of SSNs, which can lead to identity theft and illegal use of Medicare benefits.
CMS will begin mailing new cards in April 2018 and will meet the statutory deadline for replacing all Medicare cards by April 2019. Your patients who are new to the Medicare program starting in April 2018 and later will only have a card with the new Medicare number.