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Supplementary codes for chronic conditions: evaluation report for population health monitoring
Publication
Release Date:
Topic: Chronic disease
Citation
AIHW (Australian Institute of Health and Welfare) (2023) Supplementary codes for chronic conditions: evaluation report for population health monitoring, AIHW, Australian Government, accessed 24 June 2026.
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In 2015, a number of supplementary codes for chronic conditions were implemented in admitted patient care data in Australia. This report evaluates the use of the supplementary codes for the purpose of population health monitoring in Australia and provides evidence for including these codes in future analysis and linked data assets.
- ISBN: 978-1-922802-64-4
- Cat. no: PHC 11
- Pages: 42
Findings from this report:
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1 in 3 hospitalisations in 2019–20 had at least one supplementary code
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When introduced in 2015-16 there was a drop in additional diagnosis for one in 3 conditions with a supplementary code
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Including supplementary codes in case definitions increases the capture of some chronic conditions up to 15-fold
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Supplementary codes are assigned in a minority of hospitalisations of people with a prior diagnosis for the condition