Health, Standard 01/03/2005 Tasmanian Health, Draft 23/07/2012
Major diagnostic categories (MDCs) are 23 mutually exclusive categories into which all possible principal diagnoses fall. The diagnoses in each category correspond to a single body system or aetiology, broadly reflecting the speciality providing care. Each category is partitioned according to whether or not a surgical procedure was performed. This preliminary partitioning into major diagnostic categories occurs before a diagnosis related group is assigned.
The Australian refined diagnosis related groups (AR-DRGs) departs from the use of principal diagnosis as the initial variable in the assignment of some groups. A hierarchy of all exceptions to the principal diagnosis-based assignment to a MDC has been created. As a consequence, certain AR-DRGs are not unique to a MDC. This requires both a MDC and an AR-DRG to be generated per patient.
All admitted patient care contexts:
The generation of a major diagnostic category to accompany each AR-DRG is a requirement of the latter as diagnosis related groups are not unique.
This metadata item has been created to reflect the development of Australian refined diagnosis related groups (AR-DRGs) (as defined in the metadata item Episode of admitted patient care—diagnosis related group, code (AR-DRG v 6) ANNA) by the Commonwealth Department of Health and Ageing. Due to the modifications in the diagnosis related group logic for the AR-DRGs, it is necessary to generate the major diagnostic category to accompany each diagnosis related group. The construction of the pre-major diagnostic category logic means diagnosis related groups are no longer unique. Certain pre-major diagnostic category diagnosis related groups may occur in more than one of the 23 major diagnostic categories.
Source and reference attributes
Department of Health and Ageing, Acute and Co-ordinated Care Branch
Is formed using Person—date of birth, DDMMYYYY Community Services, Standard 25/08/2005, Housing assistance, Standard 20/06/2005, Health, Standard 04/05/2005, Early Childhood, Standard 21/05/2010, Homelessness, Standard 23/08/2010, Tasmanian Health, Draft 23/07/2012, WA Health, Draft 23/08/2012, Independent Hospital Pricing Authority, Standard 01/11/2012, Indigenous, Draft 18/10/2012
Is formed using Person—sex, code N Community Services, Standard 25/08/2005, Housing assistance, Standard 10/02/2006, Health, Standard 04/05/2005, Early Childhood, Standard 21/05/2010, Homelessness, Standard 23/08/2010, WA Health, Draft 23/08/2012, Independent Hospital Pricing Authority, Standard 01/11/2012, Indigenous, Draft 18/10/2012