Some Medicare ... flex cards may only be offered to people living in certain states or people with certain chronic health conditions, according to the National Council on Aging. For example ...

But know that using the old card could lead to denial of claims and plan applications. Note that this step applies to those who have Original Medicare, with or without a Medicare supplement.

If you have Original Medicare (Parts A and B), then you should take your card with you when you're away from home and you should show your card to your doctor or hospital upon arrival to access ...