Update part 2: just got a call from the vision therapy clinic. NOT from the vision therapist who was supposed to have called last Friday but from her assistant. I spelled out everything just as I did here. In the strongest possible terms. (I'm no shrinking violet in case you haven't noticed...) She went from snarky to professional to a bit scared to apologetic and trying to figure out "is there a way to make this right?" Billing person called DH a few minutes later and he explained that they had used the wrong code and what needed to be done to resubmit the claim. His call ended with "Dr. _____ is not in the office today" so we assume she will be informed of the problem tomorrow. I expect her to call, DH does not.

So onward. I am quite certain that I made my point. What I am not sure of is their willingness to alter their practice. I guess we will see what happens...