C9605 HCPCS - PERCUTANEOUS TRANSLUMINAL REVASCULARIZATION OF OR THROUGH CORONARY ARTERY BYPASS GRAFT (INTERNAL MAMMARY, FREE ARTERIAL, VENOUS), ANY COMBINATION OF DRUG-ELUTING INTRACORONARY STENT, ATHERECTOMY AND ANGIOPLASTY, INCLUDING DISTAL PROTECTION WHEN PERFORMED; EACH ADDITIONAL BRANCH SUBTENDED BY THE BYPASS GRAFT (LIST SEPARATELY IN ADDITION TO CODE FOR PRIMARY PROCEDURE)