Chapter 9: Diseases of the circulatory system (I00–I99)

1,065 diagnoses listed as covered by Medicare billing and coding articles for HCPCS Level II codes. All chapters.

I01: Rheumatic fever with heart involvement

I02: Rheumatic chorea

I05: Rheumatic mitral valve diseases

I06: Rheumatic aortic valve diseases

I07: Rheumatic tricuspid valve diseases

I08: Multiple valve diseases

I09: Other rheumatic heart diseases

I10: Essential (primary) hypertension

I11: Hypertensive heart disease

I12: Hypertensive chronic kidney disease

I13: Hypertensive heart and chronic kidney disease

I15: Secondary hypertension

I16: Hypertensive crisis

I1A: Other hypertension

I20: Angina pectoris

I21: Acute myocardial infarction

I22: Subsequent ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction

I23: Certain current complications following ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction (within the 28 day period)

I24: Other acute ischemic heart diseases

I25: Chronic ischemic heart disease

I26: Pulmonary embolism

I27: Other pulmonary heart diseases

I28: Other diseases of pulmonary vessels

I30: Acute pericarditis

I31: Other diseases of pericardium

I32: Pericarditis in diseases classified elsewhere

I33: Acute and subacute endocarditis

I34: Nonrheumatic mitral valve disorders

I35: Nonrheumatic aortic valve disorders

I36: Nonrheumatic tricuspid valve disorders

I37: Nonrheumatic pulmonary valve disorders

I38: Endocarditis, valve unspecified

I39: Endocarditis and heart valve disorders in diseases classified elsewhere

I40: Acute myocarditis

I41: Myocarditis in diseases classified elsewhere

I42: Cardiomyopathy

I43: Cardiomyopathy in diseases classified elsewhere

I44: Atrioventricular and left bundle-branch block

I45: Other conduction disorders

I46: Cardiac arrest

I47: Paroxysmal tachycardia

I48: Atrial fibrillation and flutter

I49: Other cardiac arrhythmias

I50: Heart failure

I51: Complications and ill-defined descriptions of heart disease

I52: Other heart disorders in diseases classified elsewhere

I60: Nontraumatic subarachnoid hemorrhage

I61: Nontraumatic intracerebral hemorrhage

I62: Other and unspecified nontraumatic intracranial hemorrhage

I63: Cerebral infarction

I65: Occlusion and stenosis of precerebral arteries, not resulting in cerebral infarction

I66: Occlusion and stenosis of cerebral arteries, not resulting in cerebral infarction

I67: Other cerebrovascular diseases

I68: Cerebrovascular disorders in diseases classified elsewhere

I69: Sequelae of cerebrovascular disease

I70: Atherosclerosis

I71: Aortic aneurysm and dissection

I72: Other aneurysm

I73: Other peripheral vascular diseases

I74: Arterial embolism and thrombosis

I75: Atheroembolism

I76: Septic arterial embolism

I77: Other disorders of arteries and arterioles

I78: Diseases of capillaries

I79: Disorders of arteries, arterioles and capillaries in diseases classified elsewhere

I80: Phlebitis and thrombophlebitis

I82: Other venous embolism and thrombosis

I87: Other disorders of veins

I89: Other noninfective disorders of lymphatic vessels and lymph nodes

I95: Hypotension

I96: Gangrene, not elsewhere classified

I97: Intraoperative and postprocedural complications and disorders of circulatory system, not elsewhere classified