WA Clinical Coding Authority (WACCA)

WACCA provides stewardship and oversight of WA clinical coding including:

  • Clinical coding consultancy to assure excellent coded data and information for the WA Health System
  • Managing the WA Clinical Coding Advisory Group and publishing WA Coding Rules
  • Measuring compliance with Mandatory Policy 0056/17 Clinical Coding Policy

What is clinical coding?

Clinical coding is the translation of written clinical documentation about patient care into code format. For example, acute appendicitis is represented by the code 'K35.8'.

A standardised classification system, The International Statistical Classification of Diseases and Related Health Problems, 10th Revision, Australian Modification (ICD-10-AM), is applied in all Australian acute health facilities. It is based on the World Health Organisation ICD-10 system, updated with the Australian Classification of Health Interventions (ACHI), Australian Coding Standards (ACS) and ICD-O-3 (International Classification of Diseases for Oncology, 3rd edition).

A clinical coder is responsible for abstracting relevant information from the medical record and deciding which diagnoses and procedures meet criteria for coding as per Australian and WA Coding Standards. The coder then assigns codes for these diagnoses and procedures based on ICD-10-AM/ACHI conventions and Standards and in accordance with national ACCD Coding Rules and state WA coding rules.

What is coded information used for?

The assigned codes and other patient data are processed by grouper software to determine an Australian Refined - Diagnosis Related Group (AR-DRG) for the episode of care, which is used for funding and reimbursement. This process allows hospital episodes to be grouped into meaningful categories, helping us to better match patient needs to health care resources. Other common uses of coded data:

  • Clinical research and audits
  • Resource allocation
  • Health services planning
  • Statistics
  • Epidemiological studies
  • Clinical governance 
  • Education
Western Australian Clinical Coding Advisory Group

The Western Australian (WA) Coding Committee was officially retired in 2012, replaced by the WA Clinical Coding Advisory Group. The group consists of a cross-section of the WA coding community, including clinical coders and coding managers with substantial experience and from a variety of hospitals. The primary function of the group is to review and endorse decisions for resolution of ICD-10-AM coding queries. The decisions and meeting dates are published below.

Along with the current decisions made by the WA Clinical Coding Advisory Group, previous coding query decisions made by the WA Coding Committee are enforceable until the decision is officially retired.

WA Clinical Coding Advisory Group Overview (PDF 404KB)
Coding Query Process (PDF 166KB)

WA Coding Rules

A-Z Index
Chronological Index

Audit Cases Discussion

A-Z Index

Meeting dates

WA Clinical Coding Advisory Group Meetings 2017
Time: Wednesday 9am to 12pm

Date Location
13th December GB Conference Room

WA Clinical Coding Advisory Group meetings

WA Coding Rules may be retired or superseded – always utilise the A-Z index which is kept up-to-date. Alternatively, please use the Chronological index, which (when completed) will contain all current and previous advice. By browsing the WA Coding Rules independently of the indexes, users acknowledge that the content may not be current.

Audit Discussion Cases are based on Australian Coding Standards, state and national ratified advice, however should be used with caution as classification rules are continually evolving. These documents are not routinely updated.

Please note that the Western Australian Clinical Coding Authority is currently reviewing published content at present.
If you require a copy of a particular Coding Audits Discussion Case, please email your request to: clinical.coding@health.wa.gov.au.

Month Coding queries Audit discussion cases
August 2017 WACCAG meeting August 2017 (PDF 98KB)
Audit Discussion Cases August 2017 (PDF 248KB)
June 2017 WACCAG meeting June 2017 (PDF 70KB)
Audit Discussion Cases June 2017 (PDF 248KB)
February 2017 WACCAG meeting February 2017 (PDF 147KB)
Audit Discussion Cases February 2017 (PDF 248KB)
November 2016 WACCAG meeting November 2016 (PDF 145KB)
Audit Discussion Cases November 2016 (PDF 248KB)
September 2016 WACCAG meeting September 2016 (PDF 266KB)
Audit Discussion Cases September 2016 (PDF 248KB)
July 2016 WACCAG meeting July 2016 (PDF 313KB)
Audit Discussion Cases July 2016 (PDF 248KB)
May 2016
WACCAG meeting May 2016 (PDF 240KB)
Audit Discussion Cases May 2016 (PDF 248KB)
March 2016
WACCAG meeting March 2016 (PDF 204KB)
Audit Discussion Cases March 2016 (PDF 248KB)
February 2016
WACCAG meeting February 2016 (PDF 187KB)
Audit Discussion Cases February 2016 (PDF 248KB)


To submit a coding query, please follow the Coding Query Process (PDF 157KB).

Our team here at the Department of Health in Western Australia is not involved in recruitment - this is conducted by individual hospitals. For job vacancies please see: www.jobs.health.wa.gov.au (external site).

For all other enquiries, please contact:

Principal Coding Consultant

Phone: (08) 9222 4153
Email: clinical.coding@health.wa.gov.au
Post:       PO Box 8172
               Perth Business Centre
               Perth WA 6849
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Information Data & Standards