I bill for a radiologist and we removed a central venous catheter using flouroscopic guidance. We submitted codes 36589 and 77001/26 to Medicare. The 36589 was paid but the 77001/26 denied as "primary procedure not billed." The description of 77001 is Fluoroscopic guidance for central venous access device placement, replacement, or removal. I contacted the carrier and they state that the 36589 is not an acceptable primary code per CMS. I asked for guidance in locating a policy and have been unsuccessful. Does anyone know what the acceptable primary procedure codes for CMS are and where I can find this information? Has anyone else experienced this with their Medicare contractor? There is a discrepancy between the code description and the policy. Thanks for help.