Table 1.

Comorbidities	ICD-9	ICD-10	Physician visit requirement	Hospital discharge requirement
Asthma	493	J45-46	2 visits or more within any 2-year period during study for asthma	1 discharge during study with asthma in any diagnostic field
Diabetes	250	E10–E14	2 visits or more within any 2-year period during study for diabetes	1 discharge during study with diabetes in any diagnostic field
Hypertension	401–405	I10–I13, I15	2 visits or more within any 2-year period during study for hypertension	1 discharge during study with hypertension in any diagnostic field
Chronic heart diseases	428	I50	2 visits or more within any 1-year period during study for chronic heart disease	1 discharge during study with chronic heart disease in any diagnostic field
Ischemic heart diseases	410–414	I20–I25	2 visits or more within any 1-year period during study for ischemic heart disease	1 discharge with any diagnostic field or 1 treatment code1 for ischemic heart disease during study
Osteoporosis	733	M80-M81	1 visit during the study for osteoporosis ever	1 discharge with osteoporosis in any diagnostic field ever
Mood or anxiety disorder	296, 300, 311	F30–F39, F40–F48, F68	1 visit during the study for mood disorder or anxiety disorder in one year (has to requalify every year)	1 discharge during the study for mood disorder or anxiety disorder in any diagnostic field in one year (has to requalify every year)

¹CCADTC: 48.02, 48.03, 48.11–48.19/CCI: 1.IJ.50, 1.IJ.57.GQ, 1.IJ.54, 1.IJ.76.