Istituto di Informatica e Telematica     
Cardillo E., Pasceri E., Chiaravalloti M. T. Assessing ICD-9-CM and ICPC-2 Use in Primary Care. An Italian Case Study. In: 5th International Conference on Digital Health (Firenze, 18-05 2015). Proceedings, pp. 95 - 102. ACM - New York, 2015.
Controlled vocabularies and standardized coding systems play a fundamental role in the healthcare domain. The International Classification of Diseases (ICD) is one of the most widely used classification systems for clinical problems and procedures. In Italy the 9th revision of the standard is used and recommended in primary care for encoding prescription documents. This paper describes a statistical and terminological study to assess ICD-9-CM use in primary care and its comparison to the International Classification of Primary Care (ICPC), specifically designed for primary care. The study has been conducted by analyzing the clinical records of about 199,000 patients provided by a set of 166 General Practitioners (GPs) in different Italian areas. The analysis has been based on several techniques for detecting coding practice and errors, like natural language processing and text-similarity comparison. Results showed that the selected GPs do not fully exploit the diseases and procedures descriptive capabilities of ICD-9-CM due to its complexity. Furthermore, compared to ICPC-2, it resulted less feasible in the primary care setting, particularly for the high granularity of the structure and for the lack of reasons for encounters.
DOI: 10.1145/2750511.2750525
Subject Primary care
Medical Terminology
medical information systems
Coding systems
Medical Information Systems

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