Depending on your situation, if non emergency and you were able to ask the cash price beforehand you might be surprised that you can get the same CT scan for less than what insurance ultimately paid. At least that’s my experience ($450 vs $1200). You may have to ask at a diagnostic imaging place, not the hospital since the hospitals can never tell you what anything costs they aren’t set up for it. (Of course I went through insurance since I didn’t want to pay out of pocket, but it was an interesting lesson in one of the reasons why healthcare is unnecessarily expensive in the US.)