The provider introduces a needle and/or catheter under fluoroscopic guidance (live X–rays that can be viewed on a monitor) and injects contrast material into the dialysis access point to visualize and record images of the entire dialysis circuit; he finds an obstructed segment and passes an intravascular stent or stents through the catheter into the vessel lumen to keep it open. Radiological supervision and interpretation for both components of the procedure and image capture and report for the angiography are included in this code.
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