I need to order supplemental nutrition for my son. I usually just pay out of pocket, but I contacted a company that can deliver the product and have it billed t

I need to order supplemental nutrition for my son. I usually just pay out of pocket, but I contacted a company that can deliver the product and have it billed though my insurance. It would end up costing me about the same but would at least count towards my deductible. They delivered monthly. After the second delivery I got the first bill. It was much higher than they said the per unit cost was. After a lot of Byzantine exploration of billing codes, I discovered they were billing a daily charge for infusion. A lot of angry phone calls just reached the conclusion that they add this charge because they are allowed to by the insurance. I'm guessing this is a similar thing. They can keep charging a daily charge so long as they are able to control that the device is active.