Diseases of the circulatory system (I00–I99)
Chapter 9 (I00–I99) covers conditions that affect the heart, blood vessels, and overall blood circulation. These codes are used to classify diseases like heart attacks, high blood pressure, and strokes for diagnosis and treatment records.
This chapter includes a wide variety of circulatory system disorders, ranging from heart diseases such as ischemic heart disease and arrhythmias to vascular problems like hypertension and peripheral artery disease. It also encompasses cerebrovascular diseases, which involve blood flow to the brain and can lead to strokes. These codes help healthcare professionals document and manage conditions related to the heart's function, blood vessels’ health, and circulation abnormalities, facilitating appropriate medical care and monitoring of chronic cardiovascular illnesses.
- Acute rheumatic fever (I00-I02)
- Chronic rheumatic heart diseases (I05-I09)
- Hypertensive diseases (I10-I1A)
- Ischemic heart diseases (I20-I25)
- Pulmonary heart disease and diseases of pulmonary circulatio
- Other forms of heart disease (I30-I5A)
- Cerebrovascular diseases (I60-I69)
- Diseases of arteries, arterioles and capillaries (I70-I79)
- Diseases of veins, lymphatic vessels and lymph nodes, not el
- Other and unspecified disorders of the circulatory system (I
Diseases of the circulatory system (I00–I99)
Excludes2: certain conditions originating in the perinatal period (P04-P96), certain infectious and parasitic diseases (A00-B99), complications of pregnancy, childbirth and the puerperium (O00-O9A), congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99), endocrine, nutritional and metabolic diseases (E00-E88), injury, poisoning and certain other consequences of external causes (S00-T88), neoplasms (C00-D49), symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94), systemic connective tissue disorders (M30-M36), transient cerebral ischemic attacks and related syndromes (G45.-)
Acute rheumatic fever (I00-I02)
Chronic rheumatic heart diseases (I05-I09)
Hypertensive diseases (I10-I1A)
Ischemic heart diseases (I20-I25)
- Angina pectoris (I20)
- Acute myocardial infarction (I21)
- Subsequent ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction (I22)
- Certain current complications following ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction (within the 28 day period) (I23)
- Other acute ischemic heart diseases (I24)
- Chronic ischemic heart disease (I25)
Pulmonary heart disease and diseases of pulmonary circulation (I26-I28)
Other forms of heart disease (I30-I5A)
- Acute pericarditis (I30)
- Other diseases of pericardium (I31)
- Pericarditis in diseases classified elsewhere (I32)
- Acute and subacute endocarditis (I33)
- Nonrheumatic mitral valve disorders (I34)
- Nonrheumatic aortic valve disorders (I35)
- Nonrheumatic tricuspid valve disorders (I36)
- Nonrheumatic pulmonary valve disorders (I37)
- Endocarditis, valve unspecified (I38)
- Endocarditis and heart valve disorders in diseases classified elsewhere (I39)
- Acute myocarditis (I40)
- Myocarditis in diseases classified elsewhere (I41)
- Cardiomyopathy (I42)
- Cardiomyopathy in diseases classified elsewhere (I43)
- Atrioventricular and left bundle-branch block (I44)
- Other conduction disorders (I45)
- Cardiac arrest (I46)
- Paroxysmal tachycardia (I47)
- Atrial fibrillation and flutter (I48)
- Other cardiac arrhythmias (I49)
- Heart failure (I50)
- Complications and ill-defined descriptions of heart disease (I51)
- Other heart disorders in diseases classified elsewhere (I52)
- Non-ischemic myocardial injury (non-traumatic) (I5A)
Cerebrovascular diseases (I60-I69)
- Nontraumatic subarachnoid hemorrhage (I60)
- Nontraumatic intracerebral hemorrhage (I61)
- Other and unspecified nontraumatic intracranial hemorrhage (I62)
- Cerebral infarction (I63)
- Occlusion and stenosis of precerebral arteries, not resulting in cerebral infarction (I65)
- Occlusion and stenosis of cerebral arteries, not resulting in cerebral infarction (I66)
- Other cerebrovascular diseases (I67)
- Cerebrovascular disorders in diseases classified elsewhere (I68)
- Sequelae of cerebrovascular disease (I69)
Diseases of arteries, arterioles and capillaries (I70-I79)
- Atherosclerosis (I70)
- Aortic aneurysm and dissection (I71)
- Other aneurysm (I72)
- Other peripheral vascular diseases (I73)
- Arterial embolism and thrombosis (I74)
- Atheroembolism (I75)
- Septic arterial embolism (I76)
- Other disorders of arteries and arterioles (I77)
- Diseases of capillaries (I78)
- Disorders of arteries, arterioles and capillaries in diseases classified elsewhere (I79)
Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified (I80-I89)
- Phlebitis and thrombophlebitis (I80)
- Portal vein thrombosis (I81)
- Other venous embolism and thrombosis (I82)
- Varicose veins of lower extremities (I83)
- Esophageal varices (I85)
- Varicose veins of other sites (I86)
- Other disorders of veins (I87)
- Nonspecific lymphadenitis (I88)
- Other noninfective disorders of lymphatic vessels and lymph nodes (I89)
Other and unspecified disorders of the circulatory system (I95-I99)