The Emergency Department Data Collection (EDDC) is an administrative data collection that contains de-identified, demographic, administrative and clinical data detailing presentations to Emergency Departments (ED) at public metropolitan hospitals in New South Wales.

The EDDC is based on the "Non-admitted Patient Emergency Department Care‟ National Minimum Data Set (NMDS). Each record in the collection represents a presentation to the emergency department of a public hospital. The diagnoses in the EDDC are recorded by medical, nursing or clerical personnel at the point of care.

The Emergency Department collection provides information about patient presentations to the emergency departments of public hospitals in New South Wales.

ED data is only available from January 2005 onwards. The EDDC has substantial limitations. These limitations must be considered when planning a study using ED data, and in particular, when interpreting and presenting the data. See the data dictionary for the full list of considerations for using EDDC in linkage studies.

Administrative; The primary purpose of the Emergency Department Data Collection is to assist clinicians in the management of patients; and enable comparisons of performance in respect to access to services, quality clinical outcomes, patient management, customer satisfaction and cost effectiveness.

NSW state data

The EDDC is required under the National Health Care and National Health Information Agreements (NHCA & NHIA).