The International Classification of Diseases (ICD) is the international standard diagnostic tool for epidemiology, health management, research, and clinical purposes, as well as the international standard for reporting diseases and health conditions. The ICD allows for:

  • Recording individual health conditions at the desired level of detail. This is why it is used in many health systems to diagnose conditions and determine which treatment is received
  • Generating healthcare statistics and reimbursement information
  • Sharing and comparing health information between hospitals, regions, settings, and countries
  • Comparing data in the same country across different time periods.

The ICD is updated at regular intervals to reflect the current state of health knowledge. Experts, international societies for the medical areas and professions, patients, and their organizations are brought together by the World Health Organization (WHO) to revise the ICD. On 25 May 2019, the World Health Assembly (WHA) adopted the ICD-11, and this latest revision which came into effect on 1 January 2022. The ICD-11 is the first classification system to include a systematic representation of chronic pain, and is publicly available via the WHO website.

To learn more, please see the following materials:



To discover more about ICD-11 watch the video below.

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