Summary
Objectives:
During the adaptation of the Australian Refined Diagnosis Related Groups for Germany
mapping tables between procedure classifications were needed. The mapping between
the German OPS-301 2.0 and the Australian MBS-Extended should transfer the Australian
expertise by keeping a well-established terminology system.
Methods:
A methodological framework for the development of mapping tables had been developed
based on the model for representation of semantics provided by the European Committee
of Standardization. Two approaches were used; the concept-based approach from OPS-301
2.0 to MBS-Extended and the class-based approach the other way round. A conversion
had to be identified between 23,160 classes of the OPS-301 2.0 and 6,328 classes of
the MBS-Extended in two asymmetrical mapping tables.
Results:
The class-based approach leads to a low number of 6,980 conversions but misses 82.6%
of the classes of the OPS-301. Because of domain incongruencies and missing domain
completeness of the OPS-301 2.0 for non-operative procedures 15.7% of the MBS-Extended-classes
remain without conversion. The concept-based approach leads to a slightly higher mean
number of conversions per class of 1.35 in comparison to 1.31 with the class-based
approach. But it was possible to find conversions for 99.5% of the OPS-301 2.0-classes.
16.3% of the DRG-relevant classes of the MBS-Extended were missed.
Conclusions:
The class-based approach was not useful, because the MBS-Extended is significantly
broader than the OPS-301 2.0. An external validation study for the direction OPS-301
2.0 to MBS-Extended revealed a satisfactory quality. The empirical and the reference-based
approach are important alternatives to the ones used in this project. There are clear
criteria about the appropriate application area for the methodological approaches
presented here.
Keywords
Classification - diagnosis-related groups - mapping - procedures - terminology
