We have a new physician that does peripheral interventions and has done them during a cath. My question is since he is already doing the cath are the catheter placement codes for the intervention billable? I don't want to be missing services but I don't want to be billing for things im not supposed to either. Example our Dr. did a lhc, cors,lv gram then selective angiography of the left subclavian which led to a stent in the left subclavian. What is the correct way to code this? Any help would be greatly appreciated. I am going to an advanced cardiology coding seminar but it's not till December. Help?