International classification of diseases, 9th revision (ICD-9) codes used to define inpatient diseases and related procedures
| Disease | Diagnosis or procedure | ICD-9 code |
|---|---|---|
| * Considered in the exclusion of patients within the 36 month period before study entry but not used to define the cohort with giant cell arteritis. | ||
| Giant cell arteritis | Giant cell arteritis | 446.5 |
| Polymyalgia rheumatica* | 725 | |
| Osteoarthritis | Osteoarthritis | 715 |
| Coronary artery disease | Angina | 413, 414.0 |
| Myocardial infarction | 410, 411 | |
| Coronary angioplasty or coronary stent insertion or coronary artery bypass grafting | 36.0, 36.1, 36.2, 36.3 | |
| Stroke | Stroke | 433, 434, 437.0, 437.1 |
| Cerebrovascular accident and atherosclerosis | 437.0, 437.1 | |
| Carotid endarterectomy | 38.11, 38.12 | |
| Peripheral arterial disease | Peripheral vascular bypass or peripheral artery endarterectomy | 38.18, 38.48, 39.24, 39.25, 39.26, 39.29, 39.5 |
| Atherosclerosis of aorta | 440.0 | |
| Atherosclerosis of peripheral arteries | 440.2 | |
| Arterial embolism and thrombosis | 444 | |
| Aortic aneurysm or dissection | Aortic aneurysm or dissection | 441 |
| Peripheral vascular disease, unspecified | 443.9 | |
| Repair of aortic aneurysm | 38.44, 38.45, 39.54 | |