International Classification of Diseases

International Classification of Diseases
Our World In Data · CC BY 4.0 · source
Name	International Classification of Diseases
Caption	World Health Organization headquarters, Geneva
Established	1893
Owner	World Health Organization
Languages	English, French, Spanish, Russian, Chinese, Arabic

Contents

International Classification of Diseases

The International Classification of Diseases is a standardized system for coding diagnoses, symptoms, and procedures used worldwide by health institutions such as World Health Organization, Centers for Disease Control and Prevention, National Health Service (England), Centers for Medicare & Medicaid Services, and the European Centre for Disease Prevention and Control. It enables comparison of health data across countries like United States, United Kingdom, India, China, and Brazil and supports reporting to bodies including the United Nations and the World Bank. Administratively linked to entities such as the Geneva headquarters of the World Health Organization, the classification informs policy in jurisdictions such as California, Ontario, New South Wales, and Bavaria.

History

The classification originated from efforts by figures linked to the International Statistical Institute, Jacques Bertillon, and statistical offices in cities like Paris, Berlin, Vienna, and Stockholm during gatherings such as the International Medical Congress and the International Statistical Congress. Early adoption involved national registries in United Kingdom, France, Germany, United States, and Sweden, and influenced mortality reporting used by institutions like the British Medical Journal and the New England Journal of Medicine. Throughout the 20th century, revisions were coordinated alongside organizations including the League of Nations Health Organization and later the World Health Organization leadership in Geneva and committees with representatives from ministries in Japan, Australia, Canada, and Mexico.

The classification is organized into chapters and alphanumeric codes applied in settings such as hospitals in New York City, clinics in Delhi, and research centers like the Kaiser Permanente system and the Mayo Clinic. Clinical use interfaces connect to electronic health record vendors including Epic Systems Corporation, Cerner Corporation, Allscripts, and national health services such as NHS Digital. Coding is applied for conditions mentioned in literature from publishers like Elsevier, Springer Nature, Wiley-Blackwell, and journals such as The Lancet, JAMA, BMJ, and The New England Journal of Medicine. Classification content spans chapters that align with specialties represented by associations like the American Medical Association, Royal College of Physicians, European Society of Cardiology, and the International Association for the Study of Pain.

Major editions have corresponded with activities in international fora like meetings of the World Health Assembly, technical consultations with agencies such as the Pan American Health Organization and UNICEF, and input from national bodies including the Centers for Disease Control and Prevention and the National Institutes of Health. Updates have been implemented alongside projects involving technology partners such as Microsoft, Google, and standards organizations like International Organization for Standardization and Health Level Seven International. Editions reflect debates once raised at conferences in Geneva, London, New York City, and Tokyo and have influenced health statistics in countries including Germany, Italy, Spain, Russia, and South Africa.

Healthcare providers in systems such as Medicare (United States), Medicaid, NHS England, and insurance programs in Germany and Japan use the classification for billing and quality measurement, cooperating with payers like Aetna, UnitedHealthcare, and national insurers in France. Public health surveillance by agencies such as the European Centre for Disease Prevention and Control, Centers for Disease Control and Prevention, Public Health England, and ministries in China and India relies on coded data for disease registries, vaccination programs coordinated with Gavi, the Vaccine Alliance, and international reporting to the World Health Organization. Research institutions including Johns Hopkins University, Harvard University, Oxford University, and University of Toronto use the classification for epidemiological studies and health services research published in venues like Science and Nature Medicine.

Development is led by teams at the World Health Organization in consultation with advisory groups composed of experts from bodies such as the American Psychiatric Association, International Council of Nurses, World Medical Association, and representatives from ministries of health in countries including Brazil, South Africa, China, and Norway. Technical advisory panels have included contributors from academic centers like Yale University, Imperial College London, Karolinska Institutet, and the University of Melbourne, and standards coordination has involved organizations such as Health Level Seven International and the International Organization for Standardization.

Criticisms and controversies have arisen involving stakeholders including patient advocacy groups in regions like California, advocacy organizations such as Human Rights Watch, and professional societies like the Royal College of Psychiatrists. Debates mirror discussions at conferences in Geneva and court cases in jurisdictions like France and Germany over classification changes that affected coding for conditions recognized by specialist bodies including the American Psychiatric Association and the World Psychiatric Association. Concerns voiced by researchers at institutions such as Columbia University, University College London, and Stanford University have addressed impacts on clinical practice, reimbursement in systems like Medicare (United States), and cross-border comparability affecting agencies including the Organisation for Economic Co-operation and Development.

Category:Medical classification systems