Browse all the diagnosis codes used for diseases of the circulatory system (i00–i99). For easy navigation, the diagnosis codes are sorted in alphabetical order and grouped by sections. Each section is clearly marked with its description, and the corresponding three-digit code range. This format makes it simple to browse diagnosis codes in this chapter or section and find what you're looking for. We've also added green checkmark icons to label billable codes, and red warning icons for non-billable ones. This makes it easy to identify which codes can be billed.
Filter diagnosis codes list: 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) Rheumatic fever without heart involvement (I00) Rheumatic fever with heart involvement (I01) Rheumatic chorea (I02) Chronic rheumatic heart diseases (I05-I09) Rheumatic mitral valve diseases (I05) Rheumatic aortic valve diseases (I06) Rheumatic tricuspid valve diseases (I07) Multiple valve diseases (I08) Other rheumatic heart diseases (I09) Hypertensive diseases (I10-I1A) Essential (primary) hypertension (I10) Hypertensive heart disease (I11) Hypertensive chronic kidney disease (I12) Hypertensive heart and chronic kidney disease (I13) Secondary hypertension (I15) Hypertensive crisis (I16) Other hypertension (I1A) Ischemic heart diseases (I20-I25) Angina pectoris (I20) Acute myocardial infarction (I21) Subsequent STEMI & NSTEMI mocard infrc (I22) Certain crnt comp fol STEMI & NSTEMI mocard infrc <= 28 day (I23) Other acute ischemic heart diseases (I24) Chronic ischemic heart disease (I25) Pulmonary heart disease and diseases of pulmonary circulation (I26-I28) Pulmonary embolism (I26) Other pulmonary heart diseases (I27) Other diseases of pulmonary vessels (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 disord in dis classd elswhr (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) Occls and stenosis of precerb art, not rslt in cereb infrc (I65) Occls and stenosis of cereb art, not rslt in cerebral infrc (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) Disord of art, arterioles and capilare in dis classd elswhr (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) Oth noninfective disorders of lymphatic vessels and nodes (I89) Other and unspecified disorders of the circulatory system (I95-I99) Hypotension (I95) Gangrene, not elsewhere classified (I96) Intraop and postproc comp and disorders of circ sys, NEC (I97) Other and unspecified disorders of circulatory system (I99)