New coder at cardiology. Please help give me guidelines when a lt hc is done with any of the following:renal angio uni or bi lateral 36245 , arch aorta 93567 and/or abd arotography 36200 with or w/o run off. Can these be billed together with mod? I know you will tell me it depends on t he circumstances, but at this ponit I just need the basics. Please advise.I have info that 36200 is a component of 93458-lt hc and no mod allowed.HELP with any info, thanks.