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Data Element Detail

Episode of admitted patient care-major diagnostic category (AR-DRG v7.0)
Identifying and Definitional Attributes
QH 041588 v8
Data Element
Derived Data Element
Draft
12-Jun-2014		Current
04-Aug-2014		Superseded
30-Jun-2015
Standard
01-Jul-2014
30-Jun-2015
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.
Major diagnostic category (MDC)
MDC
Representational Attributes
Alphanumeric
Code
NN[A]
2
3
Permissible Values

Permissible_values

Valid MDC codes from version 7.0 of the corporate reference data system (CRDS) DRG data set maintained by Statistical Standards and Strategies, Health Statistics Branch (HSB).
Supplementary Values

Supplemenary_values

-
Collection and Usage Attributes
Queensland Hospital Admitted Patient Data Collection (QHAPDC):
As part of QHAPDC processing of admitted patient data by the HSB, MDCs are calculated using the "derived from" related data items and any discrepancies with facility calculated items are queried with the facility.

Multiple AR-DRG version codes are generated and made available by the HSB for funding and reporting purposes. However from 2013-14, MDC data has not been supplied by jurisdictions but instead calculated by the Australian Institute of Health and Welfare (AIHW) and the Independent Hospital Pricing Authority (IHPA) from derivable data.
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 (AR-DRG v7.0)). 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.
The AR-DRG is derived from a range of data collected on admitted patients, including diagnosis and procedure information, classified using ICD-10-AM/ACHI. AR-DRG version 7.0 was released for use with ICD-10-AM/ACHI 8th edition codes from 1 July 2013.
Relational Attributes
Related Metadata References

Related Metadata References_IR

  • 1 - 14
ViewRelationshipMetadata Item TypeMetadata Item SubtypeNameIdentifier & VersionApproval Status
SupersedesData ElementDerived Data ElementEpisode of admitted patient care-major diagnostic category (AR-DRG v7.0)QH 041588 Version 7Superseded
Has been superseded byData ElementDerived Data ElementEpisode of admitted patient care-major diagnostic category (AR-DRG v8.0)QH 041588 Version 9Superseded
Is derived fromData ElementData ElementEpisode of admitted patient care-admission dateQH 040008 Version 2Current
Is derived fromData ElementData ElementEpisode of admitted patient care-clinical code type (ICD-10-AM/ACHI)QH 040099 Version 3Superseded
Is derived fromData ElementData ElementEpisode of admitted patient care-mode of separationQH 040119 Version 7Superseded
Is derived fromData ElementData ElementEpisode of admitted patient care-procedure code (ACHI 8th edn)QH 041650 Version 8Superseded
Is derived fromData ElementData ElementEpisode of admitted patient care-separation dateQH 040117 Version 3Current
Is derived fromData ElementData ElementEpisode of care-additional diagnosis code (ICD-10-AM 8th edn)QH 041646 Version 8Superseded
Is derived fromData ElementData ElementEpisode of care-principal diagnosis code (ICD-10-AM 8th edn)QH 041644 Version 8Superseded
Is derived fromData ElementData ElementPerson-date of birthQH 040163 Version 4Current
Is derived fromData ElementData ElementPerson-sexQH 040000 Version 3Superseded
Is derived fromData ElementDerived Data ElementEpisode of admitted patient care-number of leave daysQH 040984 Version 2Superseded
Is used in conjunction withData ElementDerived Data ElementEpisode of admitted patient care-diagnosis related group (AR-DRG v7.0)QH 041587 Version 8Superseded
Relates toData ElementData Element ConceptEpisode of admitted patient careQH 041604 Version 1Current
Implementation in Metadata Sets

Implemented

  • 1 - 2
ViewMetadata Item TypeMetadata Item SubtypeNameIdentifer & VersionObligationApproval StatusEffective FromEffective To
Information AssetData CollectionQueensland Hospital Admitted Patient Data Collection (QHAPDC)QH 020001 Version 2MandatoryCurrent01-Jul-2019
Information AssetData CollectionQueensland Hospital Admitted Patient Data Collection (QHAPDC)QH 020001 Version 1MandatorySuperseded01-Jul-201430-Jun-2019
Source and Reference Attributes
CRDI; CRDI QHAPDC; DRG; ICD-10-AM codes; MDC; Major diagnostic category;