Below is from AMA CPT Changes 2000, which is good description of what the procedure entails. 76005 has been updated to 77003
Rationale
As part of the comprehensive revisions to the spinal injection section of CPT 2000, new code 72275 was added to describe the work involved in the radiologic supervision and interpretation services associated with epidurography. Epidurography includes a diagnostic imaging evaluation following an injection of contrast material into the epidural space under direct fluoroscopic visualization. This allows for evaluation of the epidural space around the target nerve roots or spinal nerves. Visualization of the free flow (or lack thereof) of contrast material in the epidural space assists in identifying focal scarring, areas of moderate to severe narrowing in the diameter of the nerve/nerve root, moderate to severe swelling of other parts of the nerve/nerve root, and the shape and size of the target nerves. Based on the epidurographic findings, potential treatment options can be evaluated.
Code 72275 differs from code 76005 in that it represents a formal recorded and reported contrast study that includes fluoroscopy. Code 72275 includes the use of fluoroscopy. Therefore, it is not appropriate to report code 76005 in addition to code 72275. Other examples of formal contrast studies are myelography and/or arthrography.
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Below you can write NCCI and see if they can have clarification of this edit, I didn't receive any specification information that I could see the justification of use of modifier 59.
http://www.cms.gov/Medicare/Coding/NationalCorrectCodInitEd/index.html
National Correct Coding Initiative
Correct Coding Solutions LLC
P.O. Box 907
Carmel, IN 46082-0907
Attention: Niles R. Rosen, M.D., Medical Director and Linda S. Dietz, RHIA, CCS, CCS-P, Coding Specialist
Fax #: 317-571-1745