Ask Dr. Z

Do you still recommend using code 37246 for lower extremity PTA for treatment of a thrombus? The physician documents a thrombus causing an 80% stenosis of the popliteal artery.

"There was separate thrombus resulting in 80% stenosis of the native distal (P3) popliteal artery and the tibioperoneal trunk. An additional 3000 the lesions were administered corresponding to a total of 100 units/kg. The lesion was angioplastied with a 3 x 200 mm followed by a 4 x 150 mm and a 4 x 60 mm Armada balloons. The final angiogram showed good results with less than 20% residual stenosis and only a minute amount of residual thrombus. The heparin effect was reversed with protamine.

Conclusion: This is a patient with acute thrombus of the native distal (P3) popliteal artery and tibioperoneal trunk treated with balloon angioplasty."