My card is brand new and it gives the model # and serial number. It has my audiologist phone number on it. On the back it says to not put the headpiece in carry on or cargo as X-rays might damage them. So I will follow advice already given and tell TSA to hand check my spare headpiece. Not worth it's getting damages by X-rays.

I was told by my doctor that it's doubtful that an MRI would go over 5 and it would be safe to have a cat scan. Regardless these techs have the knowledge to check for a CI. My card says nothing about cat scans. Good question if one was incapacited.