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Data Element Detail

Episode of admitted patient care-major diagnostic category (AR-DRG v9.0)
Identifying and Definitional Attributes
QH 041588 v10
Data Element
Derived Data Element
Draft
28-Sep-2017		Current
30-Jan-2018		Superseded
18-Nov-2019
Standard
Information Management Strategic Governance Committee (IMSGC), Queensland Health
01-Jul-2017
30-Jun-2019
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
Numeric Character
Code
N(2)
2
2
Permissible Values

Permissible_values

Valid MDC codes from version 9.0 of the Corporate Reference Data System (CRDS) DRG data set maintained by Statistical Standards and Strategies, Statistical Services Branch (SSB).
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 SSB, 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 SSB for funding and reporting purposes.
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 v9.0). 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 9.0 is for use with ICD-10-AM/ACHI 10th edition codes from 1 July 2017.
Relational Attributes
Related Metadata References

Related Metadata References_IR

  • 1 - 15
ViewRelationshipMetadata Item TypeMetadata Item SubtypeNameIdentifier & VersionApproval Status
SupersedesData ElementDerived Data ElementEpisode of admitted patient care-major diagnostic category (AR-DRG v8.0)QH 041588 Version 9Superseded
Has been superseded byData ElementDerived Data ElementEpisode of admitted patient care-major diagnostic category (AR-DRG v10.0)QH 041588 Version 11Current
Is derived fromData ElementData ElementBirth-birth weight, total gramsQH 040001 Version 3Superseded
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 5Superseded
Is derived fromData ElementData ElementEpisode of admitted patient care-mode of separationQH 040119 Version 7Superseded
Is derived fromData ElementData ElementEpisode of admitted patient care-planned same day admission indicatorQH 040012 Version 2Current
Is derived fromData ElementData ElementEpisode of admitted patient care-procedure code (ACHI 10th edn)QH 041650 Version 10Superseded
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 10th edn)QH 041646 Version 11Superseded
Is derived fromData ElementData ElementEpisode of care-additional diagnosis code (ICD-10-AM 10th edn)QH 041646 Version 10Superseded
Is derived fromData ElementData ElementEpisode of care-principal diagnosis code (ICD-10-AM 10th edn)QH 041644 Version 11Superseded
Is derived fromData ElementData ElementEpisode of care-principal diagnosis code (ICD-10-AM 10th edn)QH 041644 Version 10Superseded
Is derived fromData ElementData ElementEpisode of care-procedure code (ACHI 10th edn)QH 041650 Version 11Superseded
Is derived fromData ElementData ElementPerson-date of birthQH 040163 Version 4Current
Implementation in Metadata Sets

Implemented

  • 1 - 5
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-201730-Jun-2019
Data Supply RequirementHHS Service AgreementQueensland Hospital Admitted Patient Data Collection (QHAPDC) Public Hospital Services Data Supply Requirement (DSR) 2017-2018QH 020329 Version 1MandatorySuperseded01-Jul-201730-Jun-2018
Data Supply RequirementHHS Service AgreementQueensland Hospital Admitted Patient Data Collection (QHAPDC) Public Hospital Services Data Supply Requirement (DSR) 2018-2019QH 020504 Version 1MandatorySuperseded01-Jul-201830-Jun-2019
Data Supply RequirementHHS Service AgreementQueensland Hospital Admitted Patient Data Collection (QHAPDC) Public Hospital Services Data Supply Requirement (DSR) 2019-2020QH 020582 Version 1MandatorySuperseded01-Jul-201930-Jun-2020
Source and Reference Attributes
CRDI; CRDI QHAPDC; DRG; ICD-10-AM codes; MDC; Major diagnostic category;