Non-Admitted Data Collections

The Non-Admitted Data Collection (NADC) is a statewide patient-level collection of referral and activity records from all public hospital outpatient departments and public patients from private service providers.

The data within the NADC is integral to health service funding and also plays an important role in facilitating the measurement and monitoring of outpatient programs.

Data governance

The Non-Admitted Data Collection (NADC)  team within the Information and System Performance Directorate of Western Australia (WA) Department of Health manages the NADC. The Assistant Director General, Purchasing and System Performance is the data steward and the Principal Data Management Officer of the NADC is the data custodian. These roles are defined and required by theInformation Management Governance Policy.

Maintenance of standards used for data recording and reporting is under the governance of the Non-Admitted Patient Data Management Committee (NAP DMC) and the Executive Director, Information & System Performance Directorate.

Mandate for Collection

The WA Department of Health are mandated under the National Health Reform Act to provide patient-level data containing all non-admitted activity as service events data to the Independent Health and Aged Care Pricing Authority (IHACPA) (external site) each quarter. This dataset contains the non-admitted classification coding of Tier 2 which is the national classification used by IHACPA to fund states and territories for their non-admitted activity.

Data sources

There are a variety of established data systems used for recording referrals, scheduling appointments and recording the outcome of appointments. The below table lists the current information systems that are used to collect and report data to the Non Admitted Data Collection.

Information Systems

WebPAS (all metro sites and WACHS)
SJOG WebPAS (Midland, Mt Lawley and Bunbury)
eMED (Sir Charles Gairdner Hospital)
Meditech (Joondalup Health Campus)
Genie (Joondalup Health Campus)
Meditech (Peel Health Campus)
MOSAIQ Genesis Care (Mandurah, Fiona Stanley, Bunbury, Albany)
MOSAIQ (Sir Charles Gairdner Hospital)
ComCare (Silver Chain)
Turnpoint care (Sir Charles Gairdner Hospital)
Titanium (OHCWA, Perth Children’s Hospital)
DenIm (Dental Health Services)
Diabetes WA (WACHs)
SAP (Fresenius)
 Alayacare (Bethesda Hospital)
Genie (Perron Institute)
Oasis (Sir Charles Gairdner Hospital)
Data elements

The NADC captures referral and activity information from outpatients and other non-admitted patients. The data items contained in the NADC are described as metadata here: AIHW Metadata (external site).

Data coverage


Activity in-scope for collection and reporting to the NADC include:

  • Non-admitted services in public hospitals 
  • publicly funded non-admitted services in private hospitals
  • publicly funded non-admitted services by contracted service providers


Activity out-of-scope for collection and reporting to the NADC include:

  • privately funded non-admitted services in private hospitals
  • community health e.g. child health clinics
Data quality

Data quality checking and editing processes for non-admitted data are in development.

Data requests

Conditions may apply before provision of unit record data. Unit record data or complex data requests should be discussed with the NADC Data Custodian to determine the most useful data provision method.

To request data email: NADC Data Requests.

Note: NADC data is not yet linked by the WA Data Linkage Branch. 

NADC data is available as unit record data and aggregate data.

Data collection changes

Changes to collection requirements can occur from year to year. These changes are largely driven by Commonwealth mandates and may result in changes to local information systems and data collection operations. Any significant changes to the NADC for the next financial year will be published here.

Requests for changes to the collection must follow the process outlined in the Non Admitted Business Rules and by contacting the Data Custodian via

Reference material


NADC data is used for the Referrals to public outpatient surgical clinics Report.

User Manuals/guides

The Patient Activity Data Policy sets the framework to ensure accurate and complete data held in the NADC.

The data elements collected and reported to the NADC align with the Non-admitted patient NBEDS 2023–24 (external site). These metadata are developed and administered by the Australian Institute for Health and Welfare (external site)

For local business rules and guidelines that support practical collection of these data elements, please refer to the Non Admitted Business Rules

Technical Specifications/File Formats

The Non Admitted Patient Data Specifications specifies data items and information currently reported to the NADC.

Please contact the Data Custodian for information regarding technical specifications and file formats. Contact information is provided below.

Metadata and Classifications

Training and education

Contact the Data Custodian for further information

Contact information

Non-Admitted Data Collections Team:

Phone: (08) 6373 1889