International classification of diseases, 9th revision (ICD-9) codes used to define inpatient diseases and related procedures

DiseaseDiagnosis or procedureICD-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 arteritisGiant cell arteritis446.5
Polymyalgia rheumatica*725
Coronary artery diseaseAngina413, 414.0
Myocardial infarction410, 411
Coronary angioplasty or coronary stent insertion or coronary artery bypass grafting36.0, 36.1, 36.2, 36.3
StrokeStroke433, 434, 437.0, 437.1
Cerebrovascular accident and atherosclerosis437.0, 437.1
Carotid endarterectomy38.11, 38.12
Peripheral arterial diseasePeripheral vascular bypass or peripheral artery endarterectomy38.18, 38.48, 39.24, 39.25, 39.26, 39.29, 39.5
Atherosclerosis of aorta440.0
Atherosclerosis of peripheral arteries440.2
Arterial embolism and thrombosis444
Aortic aneurysm or dissectionAortic aneurysm or dissection441
Peripheral vascular disease, unspecified443.9
Repair of aortic aneurysm38.44, 38.45, 39.54