We have a Interventional Cardiologist who is being called in to do a intravascualr ultrasound after another cardiologist has already performed the heart cath. The only code I seen to be able to find that fit the IVUS-92978, which states; performed by the same phys as the prim proc. Our interventional cardiologist has not performed the prim proc. Does anyone have idea what other code i could look at for either the primary code or the IVUS?