Z91
ICD-10Non-billable categoryPersonal risk factors, not elsewhere classified
Official ICD-10-CM descriptor (FY2026)
Personal risk factors, not elsewhere classified
Z91 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Excludes2
Not included here. The condition is not part of this code, but a patient may have both, and both codes may be reported together.
- contact with and (suspected) exposures hazardous to health (Z77.-)
- exposure to pollution and other problems related to physical environment (Z77.1-)
- female genital mutilation status (N90.81-)
- occupational exposure to risk factors (Z57.-)
- personal history of physical injury and trauma (Z87.81, Z87.82-)
More specific codes under Z91
- Z91.0Allergy status, oth than to drugs and biological substancescategory
- Z91.1Patient's noncompliance with medical treatment and regimencategory
- Z91.ACarers noncompl with patient's medical treatment and regimencategory
- Z91.4Personal history of psychological trauma, NECcategory
- Z91.5Personal history of self-harmcategory
- Z91.8Oth personal risk factors, not elsewhere classifiedcategory
- Z91.BPersonal risk factor of exposure to diethylstilbestrol
Where this code sits
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.