Methodological issues

Methodology to estimate prevalence using 2004-05 National Health Survey for Australia's Health 2008

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ICD-10 Codes

The International Statistical Classification of Diseases and Related Health Problems, Tenth Revision (ICD-10) is an international standard for the classification of health conditions and health management, maintained by the World Health Organisation (link opens in new window). The Australian Institute of Health and Welfare uses the ICD-10 codes listed below when preparing statistical analyses about cardiovascular disease, including the key facts presented on this website.

 

Disease codes	ICD-9 & ICD-9-CM code	ICD-10 & ICD-10-AM code
Acute rheumatic fever and chronic rheumatic heart disease	390-398	I00-I09
Coronary heart disease	410-414	I20-I25
Acute myocardial infarction	410	I21
Heart failure	428	I50
Stroke	430-438	I60-I64
Peripheral vascular disease	440-444	I70-I74
Abdominal aortic aneurysm	441.3, 441.4	I71.3, I71.4
Heart, stroke and vascular diseases (diseases of the circulatory system)	390-459	I00-I99
Congenital heart diseases	745-747	Q20-Q28
Transient ischaemic attack	435	G45

Terminology

Deaths: Mortality data presented on the cardiovascular disease pages of this website include only cases where a given condition was the underlying (primary) cause of death.

Hospitalisations: Hospitalisation data presented on the cardiovascular disease pages of this website refers to hospital separations, that is, the number of episodes of admitted patient care. Such episodes can be a total hospital stay (from admission to discharge, transfer or death), or a portion of a hospital stay beginning or ending in a change of care type (for example from acute to rehabilitation). As such, an individual patient can be represented in the data more than once.

Prevalence: The number of cases or instances present in a population at a given time.