ICD-10 Chapter IX: Diseases of the circulatory system

This is a shortened version of the ninth chapter of the ICD-10: Diseases of the circulatory system. It covers ICD codes I00 to I99. All versions of the ICD-10, including the most recent one (2019), can be browsed freely on the website of the World Health Organisation (WHO). The ICD-10 can also be downloaded in PDF-form.

ICD-10 chapters
Chapter Block Title
I A00–B99 Certain infectious and parasitic diseases
II C00–D48 Neoplasms
III D50–D89 Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
IV E00–E90 Endocrine, nutritional and metabolic diseases
V F00–F99 Mental and behavioural disorders
VI G00–G99 Diseases of the nervous system
VII H00–H59 Diseases of the eye and adnexa
VIII H60–H95 Diseases of the ear and mastoid process
IX I00–I99 Diseases of the circulatory system
X J00–J99 Diseases of the respiratory system
XI K00–K93 Diseases of the digestive system
XII L00–L99 Diseases of the skin and subcutaneous tissue
XIII M00–M99 Diseases of the musculoskeletal system and connective tissue
XIV N00–N99 Diseases of the genitourinary system
XV O00–O99 Pregnancy, childbirth and the puerperium
XVI P00–P96 Certain conditions originating in the perinatal period
XVII Q00–Q99 Congenital malformations, deformations and chromosomal abnormalities
XVIII R00–R99 Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
XIX S00–T98 Injury, poisoning and certain other consequences of external causes
XX V01–Y98 External causes of morbidity and mortality
XXI Z00–Z99 Factors influencing health status and contact with health services
XXII U00–U99 Codes for special purposes

Examples of conditions captured using codes from Chapter IX include rheumatic fever, heart attack, and strokes.

Acute rheumatic fever (I00–I02)

Chronic rheumatic heart diseases (I05–I09)

Hypertensive diseases (I10–I15)

Ischemic heart diseases (I20–I25)
  • I20 Angina pectoris
  • I21 Acute myocardial infarction
  • I22 Subsequent myocardial infarction
  • I23 Certain current complications following acute myocardial infarction
    • I23.0 Haemopericardium as current complication following acute myocardial infarction
    • I23.1 Atrial septal defect as current complication following acute myocardial infarction
    • I23.2 Ventricular septal defect as current complication following acute myocardial infarction
    • I23.3 Rupture of cardiac wall without haemopericardium as current complication following acute myocardial infarction
    • I23.4 Rupture of chordae tendineae as current complication following acute myocardial infarction
    • I23.5 Rupture of papillary muscle as current complication following acute myocardial infarction
    • I23.6 Thrombosis of atrium, auricular appendage, and ventricle as current complications following acute myocardial infarction
    • I23.8 Other current complications following acute myocardial infarction
  • I24 Other acute ischaemic heart diseases
  • I25 Chronic ischaemic heart disease
    • I25.0 Atherosclerotic cardiovascular disease, so described
    • I25.1 Atherosclerotic heart disease
    • I25.2 Old myocardial infarction
    • I25.3 Aneurysm of heart
    • I25.4 Coronary artery aneurysm
    • I25.5 Ischaemic cardiomyopathy
    • I25.6 Silent myocardial ischaemia
    • I25.8 Other forms of chronic ischaemic heart disease
    • I25.9 Chronic ischaemic heart disease, unspecified

Pulmonary heart disease and diseases of pulmonary circulation (I26–I28)

Other forms of heart disease (I30–I52)

Pericardium

Endocardium (including heart valves)

Myocardium / cardiomyopathy

Other

Cerebrovascular diseases (I60–I69)

Diseases of arteries, arterioles and capillaries (I70–I79)

Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified (I80–I89)

Other and unspecified disorders of the circulatory system (I95–I99)

Excludes
  • 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, NEC (R00-R94)
  • Systemic connective tissue disorders (M30-M36)
  • Transient cerebral ischemic attack an related syndromes (G45.-)

See also
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