Z04 is the ICD-10 code for Examination and observation for other reasons. It is a three-character category divided into 9 subcodes; use the subcode whenever the record supports that level of detail. It belongs to the block Z00–Z13 (Persons encountering health services for examination and investigation) in Chapter XXI, Factors influencing health status and contact with health services.
- Code type
- Category (3 characters)
- Chapter
- XXI · Z00–Z99
- Classification
- WHO ICD-10, 2019 version
What Z04 includes
Conditions and terms that are coded here.
- examination for medicolegal reasons
Subcodes of Z04
- Z04.0Blood-alcohol and blood-drug test
- Z04.1Examination and observation following transport accident
- Z04.2Examination and observation following work accident
- Z04.3Examination and observation following other accident
- Z04.4Examination and observation following alleged rape and seduction
- Z04.5Examination and observation following other inflicted injury
- Z04.6General psychiatric examination, requested by authority
- Z04.8Examination and observation for other specified reasons
- Z04.9Examination and observation for unspecified reason
Z04 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
DZ04Undersøgelse og observation af andre årsager
Z04Muista syistä tapahtuva tarkastus ja tarkkailu
Z04Untersuchung und Beobachtung aus sonstigen Gründen
Z04Examen et mise en observation pour d'autres raisons
Z04onderzoek en observatie om overige redenen
Listed through more specific codes:
- Z04.71Encounter for examination and observation following alleged adult physical abuse
- Z04.72Encounter for examination and observation following alleged child physical abuse
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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