Antidiabetic treatment patterns and specialty care utilization among patients with type 2 diabetes and cardiovascular disease

Table 4 A complete list of all ICD-9/ICD-10 codes for atherosclerotic CVD included in our analysis/definition of established CVD

ADA class	ICD-9		ICD-10
ADA class	430–438	Cerebrovascular disease	I60–I69	Cerebrovascular diseases
Stroke	430	Subarachnoid hemorrhage	I60	Nontraumatic subarachnoid hemorrhage
Stroke	431	Intracerebral hemorrhage	I61	Nontraumatic intracerebral hemorrhage
Stroke	432	Other and unspecified intracranial hemorrhage	I62	Other and unspecified nontraumatic intracranial hemorrhage
Stroke	433	Occlusion and stenosis of precerebral arteries	I63	Cerebral infarction
Stroke	434	Occlusion of cerebral arteries	I65	Occlusion and stenosis of precerebral arteries, not resulting in cerebral infarction
TIA	435	Transient cerebral ischemia
Stroke	436	Acute, but ill-defined, cerebrovascular disease	I66	Occlusion and stenosis of cerebral arteries, not resulting in cerebral infarction
Stroke	437.0	Cerebral atherosclerosis	I67.2	Cerebral atherosclerosis
Stroke	437.1	Other generalized ischemic cerebrovascular disease	I67.81	Acute cerebrovascular insufficiency
			I67.82	Cerebral ischemia
			I67.83	Posterior reversible encephalopathy syndrome
			I67.84	Cerebral vasospasm and vasoconstriction
Stroke	438	Late effects of cerebrovascular disease	I69	Sequelae of cerebrovascular disease
Stroke			R29.7	National Institutes of Health Stroke Scale (NIHSS) score Exclude R29.700

ADA class	410–414	Ischemic heart disease	I20–I25	Ischemic heart diseases
MI	410	Acute myocardial infarction	I21	ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction
MI			I22	Subsequent ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction
ACS	411	Other acute and subacute forms of ischemic heart disease	I24	Other acute ischemic heart diseases
MI	412	Old myocardial infarction	I23	Certain current complications following ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction (within the 28 day period)
Angina	413	Angina pectoris	I20	Angina pectoris
ACS	414	Other forms of chronic ischemic heart disease Exclude 414.1	I25	Chronic ischemic heart disease Exclude I25.3 and I25.4
ACS	V71.7	Observation for suspected cardiovascular disease

ADA class	440–449	Diseases of arteries, arterioles, and capillaries	I70–I79	Diseases of arteries, arterioles, and capillaries
PAD	440	Atherosclerosis	I70	Atherosclerosis
PAD	443.8	Other specified peripheral vascular diseases
PAD	443.9	Peripheral vascular disease, unspecified	I73.9	Peripheral vascular disease, unspecified
PAD	444	Arterial embolism and thrombosis	I74	Arterial embolism and thrombosis
PAD	445	Atheroembolism	I75	Atheroembolism

ADA class		Other CV-related		Other CV-related
MI	429.7	Certain sequelae of myocardial infarction, not elsewhere classified
TIA			G45	Transient cerebral ischemic attacks and related syndromes
PAD	459.8	Other specified disorders of circulatory system	I99	Other and unspecified disorders of circulatory system
PAD	459.9	Unspecified circulatory system disorder	I99	Other and unspecified disorders of circulatory system
PAD	V12.5	Personal history of diseases of circulatory system	Z86.7	Personal history of diseases of the circulatory system
Revascularization^a	V45.81	Aortocoronary bypass status	Z95.1	Presence of of aortocoronary bypass graft
Revascularization^a	V45.82	Percutaneous transluminal coronary angioplasty status	Z98.6	Angioplasty status
Revascularization^a	V15.1	Personal history of surgery to heart and great vessels, presenting hazards to health	Z95.5	Presence of coronary angioplasty implant and graft
Revascularization^a			Z95.8	Presence of other cardiac and vascular implants and grafts
Revascularization^a			Z95.9	Presence of cardiac and vascular implant and graft, unspecified

Per the ADA 2017 guidelines, atherosclerotic CVD was defined as follows: acute coronary syndrome, history of myocardial infarction, stable or unstable angina, coronary or other arterial revascularization, stroke, transient ischemic attack, or peripheral arterial disease presumed to be of atherosclerotic origin
ACS acute coronary syndrome, PAD peripheral arterial disease, MI history of myocardial infarction, TIA transient ischemic attack
^aRevascularization: coronary or other arterial revascularization