@article {1747,
	title = {Covhisto: A Web Application for Cross-Version Visualization and Analysis of ICD-10-GM and OPS.},
	journal = {Studies in health technology and informatics},
	volume = {331},
	year = {2025},
	month = {2025 Sep 03},
	pages = {177-185},
	abstract = {INTRODUCTION: The ongoing development of medical coding systems such as ICD-10-GM and OPS presents challenges in ensuring compatibility across versions. This paper introduces Covhisto, a web application for visualizing and analysing changes across multiple versions.

METHODS: Covhisto uses crosswalk tables published by the German Federal Institute for Drugs and Medical Devices (BfArM) and data processing pipeline to track changes between ICD-10-GM and OPS versions. Key features include methods for following individual code histories and analyzing structural changes in the coding systems.

RESULTS: Covhisto allows users to trace code evolution and identify changes not automatically captured. Unlike existing solutions, Covhisto creates a ConceptMap across all versions, offering a comprehensive view of changes over time.

CONCLUSION: Finally, Covhisto complements existing solutions by making complex code changes more transparent and easier to understand, supporting healthcare professionals and researchers in their analyses and promoting interoperability of healthcare data.},
	keywords = {Clinical Coding, Germany, Humans, International Classification of Diseases, Internet, Software},
	issn = {1879-8365},
	doi = {10.3233/SHTI251394},
	author = {Ohlsen, Tessa and M{\"u}ller, Simon and Ingenerf, Josef}
}
