Ask Dr. Z

Does the catheter have to be moved to add 37185? Say they catheterize the RLL pulmonary artery (36015-RT), then they perform 37184-RT, then he says persistent defect noted in the right main PA on angio and performs thrombectomy on the right main PA without mentioning catheter movement? Can 37185 be added?

Also, is it considered pullback if after the right side procedure then he selects the LLL PA (36015) and does thrombectomy 37184-LT, then he states he slightly retracts the flowtriever to the Left Main PA & another aspiration is performed (37185-LT)? is that 36015-59LT again or 36014-? What would the cath placements codes also be?