T78 is the ICD-10 code for Adverse effects, not elsewhere classified. It is a three-character category divided into 7 subcodes; use the subcode whenever the record supports that level of detail. It belongs to the block T66–T78 (Other and unspecified effects of external causes) in Chapter XIX, Injury, poisoning and certain other consequences of external causes.
- Code type
- Category (3 characters)
- Chapter
- XIX · S00–T98
- Classification
- WHO ICD-10, 2019 version
What T78 excludes
Conditions that look similar but belong under another code.
- complications of surgical and medical care NEC T80-T88
Coding notes
- This category is to be used as the primary code to identify the effects, not elsewhere classifiable, of unknown, undetermined or ill-defined causes. For multiple coding purposes this category may be used as an additional code to identify the effects of conditions classified elsewhere.
Subcodes of T78
T78 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
DT78Visse bivirkninger IKA
T78Muualla luokittamattomat epäedulliset vaikutukset
T78Unerwünschte Nebenwirkungen, anderenorts nicht klassifiziert
T78Effets indésirables, non classés ailleurs
T78ongewenste gevolgen, niet elders geclassificeerd
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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