Thanks alot, DMK and rdmoore.
The amount they offered is 65% of what we billed so, yes, it's better or equal to what some private insurance companies pay but not 80-100%, which we would naturally prefer. I looked for the fee schedule for CT as you suggested and it appears that it was updated in July and can only be purchased through its exclusive publisher for $125 (the CD, as opposed to the book option, says 'call' so maybe it is cheaper). What a pain. Perhaps if I keep searching I can find some info re: the codes we bill for, though. And, yes, I believe that either we have a pre auth or the patient is allowed to chose his doctor, or both. I'll have to check with the doctor, but they ins. has not denied our claim so this doesn't seem to be an issue.
Thanks again, very helpful.