Notes on the data: Hospital admissions

Same-day admissions for dialysis for kidney disease


Policy context:  Same-day admissions for dialysis for kidney disease account for a large proportion of same-day admissions, particularly for Indigenous Australians, who were admitted for dialysis at 12 times the rate for other Australians in 2014-15 [1].


  1. Australian Institute of Health and Welfare 2016. Admitted patient care 2014–15: Australian hospital statistics. Health services series no. 68. Cat. no. HSE 172. Canberra: AIHW.


Errata: WA Health have advised that same-day dialysis activity in WA which was contracted to private facilities, but funded by public hospitals, has been double-counted in data published for recent years. The corrected data were published in February 2020.


The data presented are of the number of same-day admissions for dialysis for kidney disease, including both haemodialysis and peritoneal dialysis, International Classification of Disease (ICD-10-AM) codes Z49.1 and Z49.2. There are two main types of dialysis: peritoneal, which occurs inside the body and can be performed almost anywhere, usually in the home setting; and haemodialysis, which occurs outside the body and is most often conducted in a hospital or satellite setting. The reason for presenting these data separately from overnight admissions is that they represent many repeat visits by a relatively small number of patients, who may have multiple admissions in a week. Their inclusion with, for example, admissions of males, or of females can dramatically alter the geographic distribution of these other categories of admissions. This is particularly evident in regional and remote areas where dialysis facilities are located, and where those using them may have moved to live to be near the facility.

Confidentiality of data

Counts of less than five admissions have been suppressed.

Data are not available for private dialysis units in Tasmania, the Northern Territory or the Australian Capital Territory, to protect the confidentiality of the small number of private facilities in these jurisdictions. As a result, where data are published for public dialysis units and all dialysis units, the 'all units' data for these jurisdictions have also been confidentialised, as their publication would allow identification of the confidentialised private dialysis units. The 'all units' data in other jurisdictions have also been confidentialised where publication of public and all units data would allow identification of private hospital data confidentialised due to small cell sizes. The decision was made to confidentialise the 'all units' rather than the 'public' figure as admissions to public dialysis units comprise the majority of admissions, both overall and from the most disadvantaged areas.


Geography:  Data available by Indigenous Area, Primary Health Networks, Indigenous Quintiles and Indigenous Remoteness Areas


Numerator:  Same-day admissions for dialysis for kidney disease - (Z491 to Z492)


Denominator:  Total population (ERP)


Detail of analysis:  Indirectly age-standardised rate per 100,000 population; and/or indirectly age-standardised ratio, based on the Australian standard.


Source:  Compiled by PHIDU using data from the Australian Institute of Health and Welfare, supplied on behalf of State and Territory health departments for 2012/13 to 2014/15; and the estimated resident population (non-ABS) in Indigenous Areas and for Australia in 2011, developed by Prometheus Information Pty Ltd, under a contract with the Australian Government Department of Health.

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