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Revision of the International Classification of Diseases (ICD-11)

Giving chronic pain the greater attention it deserves as a global health priority.

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About ICD-11

About ICD-11

Chronic pain affects an estimated twenty percent of people worldwide and accounts for nearly one-fifth of physician visits. One way to ensure that chronic pain receives greater attention as a global health priority is to improve the International Classification of Diseases (ICD) diagnostic classification.

In response to this need, IASP created an international task force of pain experts headed by past president, Rolf-Detlef Treede, that, in close cooperation with the World Health Organization (WHO), has developed a proposal for a systematic and pragmatic classification of chronic pain. This new classification of chronic pain has been implemented in the ICD-11 frozen version for preparing implementation.

The ICD-11 was approved on 25 May 2019. It will come into effect on 1 January 2022.


A glossary of definitions related to chronic pain conditions for international use.

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Access articles, press releases, resources and the timeline related to ICD-11.

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Learn more about the structure of the ICD-11 Classification.

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IASP Task Force for the Classification of Chronic Pain

IASP Task Force for the Classification of Chronic Pain

Meet our multidisciplinary team of volunteers that revised the classification of pain diseases.

Diseases or Clinical Conditions Associated with Chronic Pain

Rolf-Detlef Treede (Germany)

Winfried M. Rief (Germany)

General Advice

Michael B. First (US), ICD

Eva Kosek (SE), IASP Terminology Task Force

Primary Care Applicability

Blair Smith (UK)

Chronic Primary Pain

Johannes W. S. Vlaeyen (Belgium)

Michael Nicholas (Australia)

Chronic Postsurgical or Posttraumatic Pain

Stephan Schug (Australia)

Patricia Lavand‘homme (Belgium)

Chronic Headache

Stefan Evers (Germany)

Shuu-Jiun Wang (Taiwan)

Chronic Orofacial Pain

Peter Svensson (Denmark)

Rafael Benoliel (USA)

Musculoskeletal Pain

Serge Perrot (France)

Milton L. Cohen (Australia)

Chronic Cancer-Related Pain

Michael I. Bennett (UK)

Stein Kaasa (Norway)

Chronic Neuropathic Pain

Nanna Brix Finnerup (Denmark)

Nadine Attal (France)

Chronic Visceral Pain

Maria Adele Giamberardino (Italy)

Qasim Aziz (UK)

Task Force Staff

Beatrice Korwisi (Germany)


Antonia Barke (Germany)

Former Task Force Member

Joachim Scholz (USA)