Table 1 Coronary heart disease rubrics in International Classification of Diseases revisions 6–10 and the corresponding WHO vital statistics codes
ICD revisionYearTerms used equivalent to CHD and their related codesCodes used in WHO vital statistics
ICD (sixth revision)1948Atherosclerotic heart disease including coronary disease, 420Atherosclerotic heart disease, B26 (420–422)
Other myocardial degeneration, 422
ICD (seventh revision)1957IbidAtherosclerotic heart disease, B26 (420–422)
ICD (eighth revision)1967Acute myocardial infarction, 410Ischaemic heart disease, A83 (410–414)
Other acute and subacute forms of ischaemic heart disease, 411
Chronic ischaemic heart disease, 412
Angina pectoris, 413
Asymptomatic ischaemic heart disease, 414
ICD (ninth revision)1977Acute myocardial infarction 410Acute myocardial infarction 270 (410)
Other acute and subacute forms of ischaemic heart disease 411Other ischaemic heart diseases 279 (411–414)
Old myocardial infarction 412
Angina pectoris 413
Other forms of chronic ischaemic heart disease 414
ICD (tenth revision)1992Acute myocardial infarction I21 Subsequent myocardial infarction I22 Angina pectoris I20 Other acute ischaemic heart disease I24 Chronic ischaemic heart disease I25Acute myocardial infarction I21–122 Other ischaemic heart diseases I22–I24–I25