There are so many things wrong with the billed codes - and that's just looking at the code combinations.
CPT® 20660 is included in all spine procedures - you have to stabilize the head in order to operate on the spine so you should not bill for it. CPT® 20660 says "(separate procedure)" anyway.
CPT® 76000 is included in all open spine codes and should not be billed.
CPT® 20934 doesn't exist.
CPT® 20926 is probably inappropriate - why was a separate fat graft used for spine surgery? If to plug an incidental durotomy, then it's not billable. If obtained through the same incision, it's not billable.
CPT® 63045/63048 should not be billed with 22210/22216 - they are mutually exclusive codes.
Sounds like spine procedure coding education would be of help. We can help or look at your specialty society (such as AANS, AAOS) for coding courses.
Kim Pollock, RN, MBA, CPC
KarenZupko & Associates, Inc.