IV push with ESWL

One urology chart says, "...proceeded to give the pt. 100 mL of Optiray and IVP was performed. We confirmed that indeed the stone is lying at the lower pole of kidney....We proceeded with ESWL...."

-- Here, I am coding 50590 for ESWL. But do I require to code 96374 also [with mod 59], for Optiray (Optiray (ioversol injection) formulations are sterile, nonpyrogenic, aqueous solutions intended for intravascular administration as diagnostic radiopaque media) usage? This chart is for surgery coding.