I code for an ASC. We do the injection portion of a disco or CPT code 62290/62291. I was recently audited and was told by the auditor that in addition to these codes I should be billing a 72285/72295. Since I A) do not employ a radiologist and B) do not have a CT machine, I totally disagree. The definition for these codes are the radiologist interpretation of the CT post disco. She is telling me that the AMA says, blah blah blah. I need proof that she is wrong, or I am wrong. Can someone please help.