| Term | Definition |
| Cerebrovasular Disease 430 - 438 | insuff. blood supply to brain |
| 434.91 Cerbral artery occlusion, unspec w/ cerebral infarction | stroke, cerebrovascular or cerebrovascular accident/CVA |
| DVT 453.4 | Venous embolism and thrombosis of deep vessels of lower ext. |
| VTE Venous thromboembolism | occlusion within the venous system |
| Cardiac Catherizations 37.21 - 37.23 | right or left, tests intracardiac condition |
| Cardiac Angiography | right or left, detects pericarditis and lesions |
| PTCA 00.66 | Percutaneous transluminal coronary angioplasty, widens |
| Cardiopulmonary bypass 39.61 | heart-lung machine, extracorporeal circulation |
| Balloon angioplasty | 00.66 PTCA or coronary atherectomy |
| CABG | Coronary artery bypass graft 36.1 |
| cardiac pacemakers 37.80-3 / 37.704 | insertion, replacement, removal pacemaker device/ lead |
| AICD 37.94 | Automatic implantable cardioverter/defibrillator |