Question: Which is the correct code for a laparoscopic retroperitoneal lymph node dissection (periaortic and interaortocaval lymph nodes)? Texas Subscriber Answer: You should report CPT 38589 (Unlisted laparoscopic procedure, lymphatic system) as there is no specific CPT® code for this laparoscopic procedure. When you submit an unlisted code you should always include a cover letter with your claim explaining that you have searched the 2012 active CPT® manual and found no specific code for the procedure your urologist performed, and therefore, you chose an unlisted procedure code. Use simple, straightforward language to explain exactly what the urologist did, and why an unlisted code fits best. Documentation tip: The Medicare Physician Fee Schedule does not include unlisted procedure codes, so the codes do not have assigned fees or global periods. When you submit an unlisted code, suggest a fee by comparing the procedure your surgeon completed to a similar procedure with a "real" CPT code and an established reimbursement value. In this case, benchmark with 38780 (Retroperitoneal transabdominal lymphadenectomy, extensive, including pelvic, aortic, and renal nodes [separate procedure]), an open retroperitoneal node resection. Best bet: