Z91
Non-billablePersonal risk factors, not elsewhere classified
Personal risk factors, not elsewhere classified
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Excludes 2
Conditions not included here, but the patient may have both
Code Also
A second code may be required; sequencing depends on circumstances
Child Codes (6)
Z91.0Allergy status, oth than to drugs and biological substances
Z91.1Patient's noncompliance with medical treatment and regimen
Z91.4Personal history of psychological trauma, NEC
Z91.5Personal history of self-harm
Z91.8Oth personal risk factors, not elsewhere classified
Z91.ACarers noncompl with patient's medical treatment and regimen
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(1)
Frequently Asked Questions
What is the ICD-10 code for personal risk factors, not elsewhere classified?
The ICD-10-CM code for personal risk factors, not elsewhere classified is Z91. The full clinical description is "Personal risk factors, not elsewhere classified". Z91 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code Z91 mean?
ICD-10-CM code Z91 represents “Personal risk factors, not elsewhere classified”. It is classified under Chapter 22: Factors Influencing Health Status and Contact With Health Services and is a non-billable header code. Use a more specific child code for billing purposes.
Is Z91 a billable code?
No, Z91 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 6 child codes under Z91.
What chapter is Z91 in?
Z91 is in Chapter 22: Factors Influencing Health Status and Contact With Health Services (codes Z00-Z99).
What are the subcategories under Z91?
Z91 has 6 child codes, including: Z91.0 (Allergy status, oth than to drugs and biological substances), Z91.1 (Patient's noncompliance with medical treatment and regimen), Z91.4 (Personal history of psychological trauma, NEC), Z91.5 (Personal history of self-harm), and 2 more.
What are the UMLS CUIs for Z91?
Z91 is linked to 1 UMLS Concept Unique Identifier: C2911444. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does Z91 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like personal risk factors, not elsewhere classified affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of Z91?
Z91 maps to the ICD-11 code: QC4Z (Personal history of health problems, unspecified).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.