C (RATIONALE: Look in the CPT® Index for Angiography/Renal Artery, you are directed to 36251-36254. Code 36252 includes selective catheter placement (first-order) of the main renal artery and any accessory arteries, including arterial puncture, catheter placement(s), fluoroscopy, con-trast injection(s), image postprocessing, permanent recording of images, and radiological supervision and interpretation, including pressure gradient measurements when performed, and flush aortogram when performed, bilaterally. The selective catheterization code for the SMA is found in the CPT® Index under Artery/Abdomen/Catheterization 36245-36248. The SMA is considered a visceral artery. Look in Appendix L and you will see the SMA is a first order vessel. The radiology code is found in the CPT® Index under Angiography/Abdomen. You are referred to 74174, 74175, 74185, 75635, and 75726. The correct code is 75726. Modifier 26 denotes the professional service.)