The block Y40–Y84 of ICD-10 is titled “Complications of medical and surgical care”. It is part of Chapter XX, External causes of morbidity and mortality, and holds 4 groups.
What Y40–Y84 includes
Conditions and terms that are coded here.
- complications of medical devices
- correct drug properly administered in therapeutic or prophylactic dosage as the cause of any adverse effect
- misadventures to patients during surgical and medical care
- surgical and medical procedures as the cause of abnormal reaction of the patient, or of later complication, without mention of misadventure at the time of the procedure
What Y40–Y84 excludes
Conditions that look similar but belong under another code.
- accidental overdose of drug or wrong drug given or taken in error X40-X44
Codes in Y40–Y84
- Y40–Y59Drugs, medicaments and biological substances causing adverse effects in therapeutic use20 categories
- Y60–Y69Misadventures to patients during surgical and medical care8 categories
- Y70–Y82Medical devices associated with adverse incidents in diagnostic and therapeutic use13 categories
- Y83–Y84Surgical and other medical procedures as the cause of abnormal reaction of the patient, or of later complication, without mention of misadventure at the time of the procedure2 categories
Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.
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