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A methodological framework for the conversion of procedure classifications.

J Stausberg1, B Dahmen, S Drösler

  • 1Institute for Medical Informatics, Biometry and Epidemiology, Medical Faculty, University of Duisburg-Essen, Hufelandstr. 5, 45122 Essen, Germany. stausberg@uni-essen.de

Methods of Information in Medicine
|March 22, 2005
PubMed
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The concept-based mapping approach effectively converted German OPS-301 2.0 procedure classifications to Australian MBS-Extended, achieving 99.5% coverage. The class-based approach proved less effective due to significant differences between the classification systems.

Area of Science:

  • Health Informatics
  • Medical Classification Systems
  • International Healthcare Standards

Background:

  • Adapting Australian Refined Diagnosis Related Groups (DRG) for Germany required mapping procedure classifications.
  • Maintaining a consistent terminology system is crucial for transferring expertise between international healthcare systems.

Purpose of the Study:

  • To develop mapping tables between the German Operationen und Prozedurenschlüssel (OPS-301) 2.0 and the Australian Medicare Benefits Schedule Extended (MBS-Extended).
  • To evaluate the effectiveness of concept-based versus class-based approaches for procedure classification mapping.

Main Methods:

  • Developed a methodological framework based on the European Committee for Standardization's model for semantic representation.
  • Employed a concept-based approach (OPS-301 to MBS-Extended) and a class-based approach (MBS-Extended to OPS-301).

Related Experiment Videos

  • Identified conversions between 23,160 OPS-301 2.0 classes and 6,328 MBS-Extended classes.

    • Main Results:

    • The class-based approach yielded only 6,980 conversions, missing 82.6% of OPS-301 classes and leaving 15.7% of MBS-Extended classes unconverted.
    • The concept-based approach achieved conversions for 99.5% of OPS-301 2.0 classes, with a mean of 1.35 conversions per class.
    • 16.3% of DRG-relevant MBS-Extended classes were missed using the concept-based approach.

    Conclusions:

    • The class-based approach was unsuitable due to the broader scope of MBS-Extended compared to OPS-301 2.0.
    • The concept-based approach demonstrated satisfactory quality for OPS-301 2.0 to MBS-Extended mapping, validated by an external study.
    • Empirical and reference-based approaches offer alternatives, with clear criteria for applying presented methodological approaches.