octoHealth

I00-I99

Diseases of the circulatory system

Chapter 9

Covers diseases of the heart and blood vessels including hypertension, ischemic heart disease, and cerebrovascular diseases.

Additional Information

From parent codes: I00-I99 (Chapter 9)

Excludes 2 — Not Included HereFrom I00-I99

Excludes2 means 'NOT INCLUDED HERE!' An Excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time.

  • 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.-)

Codes in this Chapter (78)

I00Rheumatic fever without heart involvement→I01Rheumatic fever with heart involvement5 codes→I02Rheumatic chorea2 codes→I05Rheumatic mitral valve diseases5 codes→I06Rheumatic aortic valve diseases5 codes→I07Rheumatic tricuspid valve diseases5 codes→I08Multiple valve diseases6 codes→I09Other rheumatic heart diseases5 codes→I10Essential (primary) hypertension→I11Hypertensive heart disease2 codes→I12Hypertensive chronic kidney disease2 codes→I13Hypertensive heart and chronic kidney disease3 codes→I15Secondary hypertension5 codes→I16Hypertensive crisis3 codes→I20Angina pectoris5 codes→I21Acute myocardial infarction8 codes→I22Subsequent ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction5 codes→I23Certain current complications following ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction (within the 28 day period)9 codes→I24Other acute ischemic heart diseases4 codes→I25Chronic ischemic heart disease9 codes→I26Pulmonary embolism2 codes→I27Other pulmonary heart diseases5 codes→I28Other diseases of pulmonary vessels4 codes→I30Acute pericarditis4 codes→I31Other diseases of pericardium7 codes→I32Pericarditis in diseases classified elsewhere→I33Acute and subacute endocarditis2 codes→I34Nonrheumatic mitral valve disorders5 codes→I35Nonrheumatic aortic valve disorders5 codes→I36Nonrheumatic tricuspid valve disorders5 codes→I37Nonrheumatic pulmonary valve disorders5 codes→I38Endocarditis, valve unspecified→I39Endocarditis and heart valve disorders in diseases classified elsewhere→I40Acute myocarditis4 codes→I41Myocarditis in diseases classified elsewhere→I42Cardiomyopathy10 codes→I43Cardiomyopathy in diseases classified elsewhere→I44Atrioventricular and left bundle-branch block8 codes→I45Other conduction disorders9 codes→I46Cardiac arrest3 codes→I47Paroxysmal tachycardia4 codes→I48Atrial fibrillation and flutter6 codes→I49Other cardiac arrhythmias8 codes→I50Heart failure6 codes→I51Complications and ill-defined descriptions of heart disease9 codes→I52Other heart disorders in diseases classified elsewhere→I60Nontraumatic subarachnoid hemorrhage10 codes→I61Nontraumatic intracerebral hemorrhage9 codes→I62Other and unspecified nontraumatic intracranial hemorrhage3 codes→I63Cerebral infarction9 codes→I65Occlusion and stenosis of precerebral arteries, not resulting in cerebral infarction5 codes→I66Occlusion and stenosis of cerebral arteries, not resulting in cerebral infarction6 codes→I67Other cerebrovascular diseases10 codes→I68Cerebrovascular disorders in diseases classified elsewhere3 codes→I69Sequelae of cerebrovascular disease6 codes→I70Atherosclerosis10 codes→I71Aortic aneurysm and dissection9 codes→I72Other aneurysm9 codes→I73Other peripheral vascular diseases4 codes→I74Arterial embolism and thrombosis8 codes→I75Atheroembolism2 codes→I76Septic arterial embolism→I77Other disorders of arteries and arterioles10 codes→I78Diseases of capillaries4 codes→I79Disorders of arteries, arterioles and capillaries in diseases classified elsewhere3 codes→I80Phlebitis and thrombophlebitis6 codes→I81Portal vein thrombosis→I82Other venous embolism and thrombosis13 codes→I83Varicose veins of lower extremities5 codes→I85Esophageal varices2 codes→I86Varicose veins of other sites6 codes→I87Other disorders of veins6 codes→I88Nonspecific lymphadenitis4 codes→I89Other noninfective disorders of lymphatic vessels and lymph nodes4 codes→I95Hypotension6 codes→I96Gangrene, not elsewhere classified→I97Intraoperative and postprocedural complications and disorders of circulatory system, not elsewhere classified9 codes→I99Other and unspecified disorders of circulatory system2 codes→