Ask Dr. Z

Patient was referred for diagnostic right renal angiography with pressure gradients and possible renal artery stent for fibromuscular dysplasia of renal artery, after having a CT scan showing "The right renal artery stents are widely patent even the 1 in the branch vessel. However there is a subtle abnormality just proximal to the most proximal right renal artery stent that could represent an underlying severe stenosis or web from FMD."

Per procedure report, "the catheter was placed in the abdominal aorta via right common femoral artery with injection. Patent arterial vessels without significant disease: abdominal aorta, left renal, left common iliac, right renal and right common iliac. The catheter was placed in right renal artery via right common femoral artery with hemodynamics. No pressure gradient on pull back from inferior branch of right renal artery into the aorta. No renal artery hypertension." What is the appropriate coding for this diagnostic case?