Question: I have a note that states: “Following this an IVUS catheter was placed under fluoro guidance to the level of the infra-renal vena cava and measurements were taken at this level and below.” The levels indicated in the report are infra-renal vena cava, proximal common iliac vein, mid. common iliac vein, dist common iliac vein, prox external iliac vein, mid external iliac vein and dis. external iliac vein. Which code(s) should I use to code the report? Kentucky Subscriber Answer: In addition to the primary procedure, which is not listed, you will report CPT® code +37252 (Intravascular ultrasound (noncoronary vessel) during diagnostic evaluation and/or therapeutic intervention, including radiological supervision and interpretation; initial noncoronary vessel…) for the infra-renal vena cava. For the iliac veins indicated in the report, you will report +37253 (Intravascular ultrasound (noncoronary vessel) during diagnostic evaluation and/or therapeutic intervention, including radiological supervision and interpretation; each additional noncoronary vessel..). You should indicate if the procedure is bilateral by appending modifier 50 (Bilateral procedure). Important: When coding an intravascular ultrasound procedure on arteries and veins, you will code per vessel to ensure proper reporting.