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The images ran consecutively from 0921 – 0934, renal arterial and venous flow, followed by 0935 – 1015 for mesenteric arterial flow. They consistently report 93975 X two units. As the mesenteric study does not include and venous outflow information, should we report this as one unit 93975 for the renal study and one unit of 93976 for the mesenteric study? Or since the imaging is back-to-back organs of the abdomen, is it one unit 93976 because there are no mesenteric venous outflow results?