I am just learning Cardiology Procedures, and UHC Dual Medicare denied the modifier LC on CPT code 33533, and the RC for the CPT code 33518. Also Humana Medicare denied the LD modifier on CPT code 33511. For the CABG's can you use these modifiers, and where can I also find this information, because I tried to google it, and couldn't find anything? Any help would be so appreciated.