When we code for EKOS the codes we use are 37211 for Arterial or 37212 for Venous and 37252 for Non Coronary Intravascular Ultrasound.
37211 Transcatheter therapy, arterial infusion for thrombolysis other than coronary or intracranial, any method, including radiological supervision and interpretation, initial treatment day
37212 Transcatheter therapy, venous infusion for thrombolysis other than coronary or intracranial, any method, including radiological supervision and interpretation, initial treatment day
37252 IVUS (non-coronary vessel) during diagnostic eval/therapeutic intervention including radiological supervision and interpretation, initial non-coronary vessel.
for the bilateral use modifier 50. We have been paid without any issues. Most of the time this is an arterial procedure.