Comorbidity	ICD-9-CM Code
Anxiety	300.x
Cerebrovascular disease	362.34, 430.x-438.x
Congestive heart failure	398.91, 402.01, 402.11, 402.91, 404.01, 404.03, 404.11, 404.13, 404.91, 404.93, 425.4-425.9, 428.x
Coronary atherosclerosis	414.x
Chronic pulmonary disease	416.8, 416.9, 490.X-505.X, 506.4, 508.1, 508.8
Depression	311.x, 296.2x, 296.3x, 300.4x
Diabetes	250.0-250.3, 250.8, 250.9, 250.4-250.7
Dyslipidemia	272.0-272.4, 272.9
Hypertension	401.x, 405.x, 642.lx
Myocardial infarction	410.x, 412.x
Mild liver disease	070.22, 070.23, 070.32, 070.33, 070.44, 070.54, 070.6, 070.9, 570.x, 571.x, 573.3, 573.4, 573.8, 573.9, V42.7
Moderate or severe liver disease	456.0-456.2, 572.2-572.8
Obesity	278.00, 278.01, 278.02, 278.03
Psoriatic arthritis	696.0
Renal disease	403.01, 403.11, 403.91, 404.02, 404.03, 404.12, 404.13, 404.92, 404.93, 582.x, 583.0-583.7, 585.x, 586.x, 588.0, V42.0, V45.1, V56.x
Transient ischemic attack/stroke	433.xx, 434.xx, 436, 435.9
Unstable angina	411.1

ICD-9-CM = International Classification of Diseases, Ninth Revision, Clinical Modification.