For all information on classifying coronavirus disease 2019,
please see How to classify COVID-19

(Effective for separations from 1 January 2020)


The Independent Hospital Pricing Authority (IHPA) was established in 2011 as part of the National Health Reform Agreement. At this time IHPA took over responsibility for the development and licensing of the following classifications:

  • International Statistical Classification of Diseases and Related Health Problems, Tenth Revision, Australian Modification (ICD-10-AM)
  • Australian Classification of Health Interventions (ACHI)
  • Australian Coding Standards (ACS)
  • Australian Refined Diagnosis Related Groups (AR-DRGs)

The Australian Consortium for Classification Development was contracted to manage the development of ICD-10-AM/ACHI/ACS from 2013 to 2019. As of 1 July 2019 ICD-10-AM/ACHI/ACS development has been brought within IHPA.

The IHPA Australian Classification Exchange (ACE) is a portal for registered users which provides access to the following:

  • New edition education
  • Published coding queries
  • Coding query submission (nominated representatives only)
  • Submission of public submissions (ICD-10-AM/ACHI/ACS and AR-DRG)

Please register or update your ACE account details here.

ICD-10-AM/ACHI/ACS Eleventh Edition

ICD-10-AM/ACHI/ACS Eleventh Edition, implemented 1 July 2019, is the current edition used for classifying episodes of admitted patient care across Australian hospital services.

Education for ICD-10-AM/ACHI/ACS Eleventh Edition includes information on changes and updates to the classifications and can be accessed here: Online education for Eleventh Edition.

Downloads related to the ICD-10-AM/ACHI/ACS classification system such as errata, national coding rules, summary edition changes and FAQs IHPA’s ICD-10-AM/ACHI/ACS current edition page.

Archived downloads for the previous versions of ICD-10-AM/ACHI/ACS can be found on IHPA’s ICD-10-AM/ACHI/ACS previous editions page.

AR-DRG Version 9.0 and AR-DRG Version 10.0

AR-DRG Version 9.0 is the current version of a classification used for pricing episodes of acute care in Australia.

AR-DRG Version 10.0 was approved by the Pricing Authority in April 2019 and is anticipated to be used to price admitted acute episodes of care from 1 July 2020. Development of Version 10.0 was finalised following clinical and statistical analysis and in consultation with clinicians, jurisdictions and other health sector stakeholders.

Downloads related to the AR-DRG classification such as code descriptions, final report and technical specifications – please see IHPA’s AR-DRG Version 10.0 page.

Purchasing the AR-DRG and ICD-10-AM/ACHI/ACS classification system products

Products for the AR-DRG and ICD-10-AM/ACHI/ACS classification systems are available for purchase via the Lane Print website.

For international users, these products are subject to licence agreement. For more detail on licence agreements see IHPA’s Products and Licences page.

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