Appendix.

Codes used to define comorbid conditions, cardiac evaluations, and coronary revascularization procedures

	Codes
Comorbid conditions
Diabetes	ICD-9-CM diagnosis codes: 250, 357.2, 362.0x, 366.41
Cerebrovascular disease	ICD-9-CM diagnosis codes: 430–432, 434, 436, 435
Congestive heart failure	ICD-9-CM diagnosis codes: 398.91, 422, 425, 428, 402.x1, 404.x1, 404.x3, V42.1
Dyslipidemia	ICD-9-CM diagnosis codes: 272.0–272.5
Ischemic heart disease	ICD-9-CM diagnosis codes: 410–414
ICD-9-CM procedure codes: 36.01, 36.02, 36.03, 36.05, 36.06, 36.07, 36.09, 36.1x CPT codes: 92980–92982, 92984, 92995, 92996
Peripheral vascular disease	ICD-9-CM diagnosis codes: 440–444, 447, 451–453, 557
ICD-9-CM procedure codes: 84.0x, excluding 84.01–84.02; 84.1x, excluding 84.11 CPT codes: 23900, 23920, 24900, 24920, 25900, 25905, 25920, 25927, 27295, 27590, 27591, 27592, 27598, 27880, 27881, 27882, 27888, 27889, 28800, 28805
Smoking	ICD-9-CM diagnosis codes: 305.1, 649.0x, V15.82
Cardiac evaluations
Noninvasive stress testa	ICD-9-CM procedure codes: 89.41–89.44
Stress electrocardiogram	CPT codes: 93015–93018
Stress echocardiogram	CPT codes: 93350
Nuclear myocardial imaging	CPT codes: 78459, 78460, 78461, 78464, 78465, 78469, 78472, 78473, 78478, 78480, 78481, 78483, 78491, 78492
Coronary angiography	ICD-9-CM procedure codes: 37.22, 37.23, 88.53–88.57 CPT codes: 93508, 93510, 93511, 93524, 93526, 93527, 93529, 93531–93533, 93539, 93540, 93543, 93545, 93555
Revascularization procedures
Percutaneous coronary angioplasty and/or stenting	ICD-9-CM procedure codes: 36.01, 36.02, 36.03, 36.05, 36.06, 36.07, 36.09
CPT codes: 92980–92982, 92984, 92995, 92996
Coronary artery bypass grafting	ICD-9-CM procedure codes: 36.1x

^aIncludes exercise-induced and pharmacologic stress.