Ask Dr. Z

"Stenting of the restrictive atrial sepal communication was next performed. We attempted to upsize the 5F short sheath in the right femoral vein to a 7F Mullins sheath. However, resistance was encountered with advancing the Mullins sheath a short distance into the body. A hand injection of contrast through the sheath into the RFV showed significant upstream stenosis of the right external/internal iliac veins. 3 mm x 2 cm Evercross balloon was advanced into the Mullins sheath, and inflated a total of 3 times across the right external/internal iliac veins and then repeated w/4 mm x 2 cm balloon due to difficulty passing sheath. Following angioplasty, and over this wire, the 7F Mullins sheath was able to be advanced past the area of stenosis to the RA. Genesis stent was positioned across the atrial septum."

Can intervention of iliac stenosis be billed with TIS (33745) when being treated to advance a shunt?