ICD-10 diagnosis code
Z91 Personal history of risk-factors, not elsewhere classified
Z91 is the ICD-10 code for Personal history of risk-factors, not elsewhere classified. 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 Z80–Z99 (Persons with potential health hazards related to family and personal history and certain conditions influencing health status) 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 Z91 excludes
Conditions that look similar but belong under another code.
Subcodes of Z91
- Z91.0Personal history of allergy, other than to drugs and biological substances
- Z91.1Personal history of noncompliance with medical treatment and regimen
- Z91.2Personal history of poor personal hygiene
- Z91.3Personal history of unhealthy sleep-wake schedule
- Z91.4Personal history of psychological trauma, not elsewhere classified
- Z91.5Personal history of self-harm
- Z91.6Personal history of other physical trauma
- Z91.7Personal history of female genital mutilation
- Z91.8Personal history of other specified risk-factors, not elsewhere classified
Z91 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
DZ91Personlige risikofaktorer IKA
Z91Aikaisemmin esiintyneet muualla luokittamattomat vaaratekijät
Z91Risikofaktoren in der Eigenanamnese, anderenorts nicht klassifiziert
Z91Antécédents personnels de facteurs de risque, non classés ailleurs
Z91persoonlijke anamnese met risicofactoren, niet elders geclassificeerd
Listed through more specific codes:
- Z91.BPersonal risk factor of exposure to diethylstilbestrol
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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