CPT® Code 37213

Transcatheter therapy, arterial or venous infusion for thrombolysis other than coronary, any method, including radiological supervision and interpretation, continued treatment on subsequent day during course of thrombolytic therapy, including follow-up catheter contrast injection, position change, or exchange, when performed;

Transcatheter therapy for thrombolysis, as described by CPT® Code 37213, involves the infusion of thrombolytic agents through a catheter into an arterial or venous vessel that is not a coronary vessel. This procedure is typically initiated on a specific day, which is reported separately, and may continue for one or more subsequent days as necessary to achieve complete thrombolysis. The primary goal of this therapy is to dissolve blood clots (thrombi) that obstruct blood flow, thereby restoring circulation. During the continued treatment phase, follow-up diagnostic angiography is performed using contrast material to assess the effectiveness of the thrombolytic therapy. If the catheter's position needs adjustment to optimize the infusion site, a guidewire is utilized to facilitate this process. The existing catheter can either be repositioned or replaced with a new catheter to ensure that the thrombolytic agent is delivered effectively to the thrombus site. The infusion continues until the desired therapeutic outcome is reached, which is characterized by the complete lysis of the thrombus and restoration of normal blood flow. Once the treatment is concluded, the thrombolytic catheter is removed, and appropriate measures are taken to ensure vessel closure, which may involve the use of a closure device or manual compression to achieve hemostasis. This code specifically captures the ongoing management of thrombolytic therapy beyond the initial treatment day.