Development of the ICD-10 simplified version and field test.

Area of Science:

• Health Informatics
• Medical Coding Systems
• International Health Statistics

Background:

• The International Statistical Classification of Diseases and Related Health Problems, 10th Revision (ICD-10) has been utilized in Asia-Pacific nations for over two decades.
• Complex clinical coding processes hinder ICD-10 implementation in many developing countries, impacting health statistics (WHO-FIC APN, 2007).

Purpose of the Study:

• To simplify ICD-10 clinical coding procedures.
• To enhance index terms for improved computer-based searching.
• To develop and validate a simplified ICD-10 version for developing nations.

Main Methods:

• The World Health Organization Family of International Classifications Asia-Pacific Network (APN) developed a simplified ICD-10.
• Field testing involved 10 hospitals in Cambodia (February-March 2016).
• Participants received training and coded 100 cases using the simplified version, with coded records submitted for analysis.

Main Results:

• 1038 records were coded, assigning 1099 ICD clinical codes.
• An average accuracy rate of 80.71% was achieved (range: 66.67-93.41%).
• Identified errors included coder-related (14.56%), physician documentation (1.27%), and system errors (3.46%).

Conclusions:

• Field trial results indicate the APN ICD-10 simplified version is a feasible and effective tool for hospital ICD-10 clinical coding.
• Developing countries can adopt this simplified version for ICD-10 code assignment, serving as an introductory step towards full ICD-10 and potential ICD-11 implementation.