Table 2.

Primary Diagnoses and Comorbid Conditions for Incident PAD Hospitalizations: ARIC Study, 2002–2010 (n=213)

Primary Discharge Diagnosis Grouped by ICD‐9‐CM Chapter	Inpatient Incident PAD
	n	%
Diseases of the circulatory system (390–459)	81	38.0%
PAD‐related code in primary position	37	17.4%
Non–circulatory system disorders (001–389, 580–999, V01–V89, E800–E999; procedures 00–99)	132	62.0%
Comorbid conditions and proceduresa (ICD‐9‐CM code[s])
Ischemic heart disease	83	39.0%
Myocardial infarction	7	3.3%
Atrial fibrillation	26	12.2%
Heart failure	36	16.9%
Stroke	13	6.1%
Chronic kidney disease	37	17.4%
Diabetes mellitus	51	23.9%

ARIC indicates Atherosclerosis Risk in Communities; ICD‐9‐CM, International Classification of Diseases, Ninth Revision, Clinical Modification; PAD, peripheral artery disease.

^a ICD‐9‐CM codes for each condition and procedure are listed in Table S3.