Sad thing is, some people even get billed twice for the same service too and might not even be paying attention fully to notice either. Someone I know almost mistakenly paid twice because of a double billing error. Then I seen on a TV commercial, some college has an entire degree on medical coding and billing... Not sure why tech isn't being used to help, seems insane you have to go to college just to learn how to bill people properly and then probably still end up making mistakes.