When the cause of death does not exist: time for the WHO to close the ICD classification gap for Medical Aid in Dying

Medical aid in dying (MAID) is a highly controversial ethical issue in the global medical community. Unfortunately, the International Classification of Diseases (ICD) of the World Health Organization (WHO) lacks coding for MAID. Therefore, no robust data adequately monitors worldwide trends that include information on diseases and conditions underlying the patients’ request for assisted dying (“MAID gap”). Countries with legalised MAID observe substantial increases in cases, and likely additional countries will allow MAID in the near future. Hence, we encourage the WHO to create specific ICD codes for MAID. According to internationally established practices, a revised classification would require separate MAID-codes for (1) assisted suicide and (2) voluntary active euthanasia including supplemental codings of diseases, clusters of symptoms and function-oriented categories. By addressing these concerns, the WHO could close the “MAID gap” with new codes providing urgently necessary insights to society, public health decision-makers and regulators on this comparatively new social and medical ethical phenomenon. SEARCH STRATEGY AND SELECTION CRITERIA: Data for this Viewpoint were identified by searches of MEDLINE, PubMed, and references from relevant articles using the search terms “Medical Aid in Dying”, “Assisted Dying”, “Assisted suicide”, “Voluntary active euthanasia”, “End of life decisions” and “Cause of death statistics”. Only articles and sources published in English between 1997 and 2023 were included.”