peripheral coding

My question is when billing Medicare for a diagnostoc left heart catheterization and selective lower extremity angiography with runoff to ankle what modifier should I use for the vascular access point for ex. 36245? i billed 93458 2659;36245;75625 2659;75716 2659. everything was paid except for 36245?

re: peripheral coding

(During heart cath, the medical necessity needs to be documented and the imaging of the legs should be to the popliteals or lower). 93458-26 Catheter placement in coronary artery(s) for coronary angiography, including intraprocedural injection(s) for coronary angiography, imaging supervision and interpretation; with left heart catheterization including intraprocedural injection(s) for left ventriculography, when performed. And code 75716-59-26. You do not code access point.