Progress of ICD-10 (F) family in Japan: research, field trials and publications

Area of Science:

• Medical Informatics
• Public Health
• Psychiatry

Background:

• The Nagasaki Center, a WHO Collaborating Center since 1979, has spearheaded the adoption of ICD-10 (F) in Japan.
• Previous versions of diagnostic criteria and guidelines required localization and validation for Japanese clinical practice.

Purpose of the Study:

• To generalize and implement the International Classification of Diseases, 10th Revision (ICD-10) in Japan.
• To conduct field trials and publish Japanese versions of ICD-10 Clinical Descriptions and Diagnostic Guidelines (CDDG), Diagnostic Criteria for Research (DCR), and Multiaxial Presentation.

Main Methods:

• Field trials of the ICD-10 CDDG draft involved 129 patients and 61 clinicians across five institutions in 1988.
• Field trials for the ICD-10 DCR (1990 version) included 847 patients, 169 clinicians, and 2299 assessments at 28 institutions.
• Field trials for ICD-10 Multiaxial Presentation involved 34 psychiatrists at six institutions, yielding 676 assessments.

Main Results:

• The Japanese version of ICD-10 CDDG was published in February 1993.
• The final Japanese version of ICD-10 DCR was published in May 1994.
• The Japanese Glossaries and Conversion Tables between ICD-9 and ICD-10 were published in October 1994, alongside examination of the ICD-10 Multiaxial Presentation's adequacy.

Conclusions:

• Successful generalization of ICD-10 (F) in Japan through comprehensive validation and publication of key components.
• Established foundational resources for standardized psychiatric diagnosis and research in Japan using ICD-10 criteria.