Patient-level predictors of temporal regularity of primary care visits

Table 1 Diagnosis codes used to define chronic health conditions

Physical Health Conditions	ICD-9 Codes
Atrial Fibrillation	427.3x
Cancer	140–239, BUT NOT: 173, 290.40–209.9x, 210–224, 226–229, 232
Chronic Lung Disease^a	491.x, 492.x, 494.x, 495.x, 496.x, 500–505
Coronary Artery Disease, Angina	413.x
Coronary Artery Disease, History of Myocardial Infarction	412.x
Dementia or Pre-Dementia	331.x
Diabetes Mellitus^a	250.x, 357.2, 362.0, 366.41
Epilepsy	345.x
Heart Failure^a	398.91, 402.01, 402.11, 402.91, 404.01, 404.03, 404.11, 404.13, 404.91, 404.93, 425.x, 428.x
Hypertension	401.x, 402.x, 403.x, 404.x, 405.x
Inflammatory Bowel Diseases	555.x, 556.x
Osteoporosis	733.0x
Peripheral Arterial Disease	440.x, 441–442, 443.89, 443.9
Rheumatoid Arthritis	714.0
Sleep Disorders	327.x BUT NOT 327.35
History of Stroke	438.x
Venous Thromboembolism	415.x, 453.x
Mental Health Conditions	ICD-10 Codes
Alcohol Misuse	F10.x BUT NOT F10.11, F10.21
Anxiety Disorders	F41.x
Attention Deficit Hyperactivity Disorder	F90.x
Bipolar Disorder	F31.x
Depression	F32.x, F33.x
Post Traumatic Stress Disorder	F43.1
Schizophrenia	F20.x, F25.x

^aHaving at least one of these conditions was an inclusion criterion for being in the study
ICD-9 International Classification of Diseases Code, Clinical Modification, Version 9, ICD-10 International Classification of Diseases Code, Clinical Modification, Version 10

ISSN: 1472-6963