ICD-10-CM Z91: Personal risk factors, not elsewhere classified

ICD-10-CM Diagnosis Code (2025)

Official Description for Z91

Personal risk factors, not elsewhere classified

Coding Notes & Guidelines for Z91

Excludes1: Not Coded Here

lactose intolerance (E73.-)

Excludes1: Not Coded Here
  • current adult physical abuse (T74.11, T76.11)
  • current adult sexual abuse (T74.21, T76.11)
Excludes1: Not Coded Here

current adult neglect (T74.01, T76.01)

Excludes2: Not Included Here
  • 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-)
Excludes2: Not Included Here

Allergy status to drugs, medicaments, and biological substances (Z88.-)

Excludes2: Not Included Here

food additives allergy status (Z91.02)

Excludes2: Not Included Here

caregiver noncompliance with patient's medical treatment and regimen (Z91.A-)

Excludes2: Not Included Here

personal history of abuse in childhood (Z62.81-)

Excludes2: Not Included Here

personal history of military service (Z91.85)

Excludes2: Not Included Here

personal history of military deployment (Z91.82)

Code First

underdosing of medication (T36-T50) with fifth or sixth character 6

Code First

underdosing of medication (T36-T50) with fifth or sixth character 6

Code First

, if applicable, adverse effect of underdosing (T36-T50)

Code First

underdosing of medication (T36-T50) with fifth or sixth character 6

Code First

underdosing of medication (T36-T50) with fifth or sixth character 6

Code First
  • underlying disorder such as:
  • Alzheimer's disease (G30.-)
  • autism or pervasive developmental disorder (F84.-)
  • intellectual disabilities (F70-F79)
  • unspecified dementia with behavioral disturbance (F03.9-, F03.A-, F03.B-, F03.C-)
Inclusion Terms
  • Allergy to shellfish
  • Allergy to octopus or squid ink
Inclusion Terms
  • Allergy to beef
  • Allergy to lamb
  • Allergy to pork
  • Allergy to red meats
Inclusion Terms

Allergy to nuts other than peanuts

Inclusion Terms

Latex sensitivity status

Inclusion Terms

Allergy status to contrast media used for diagnostic X-ray procedure

Inclusion Terms

Inability to comply with dietary regimen

Inclusion Terms

Patient's underdosing of medication NOS

Inclusion Terms

Patient's nonadherence to medical treatment

Inclusion Terms

Caregiver's inability to comply with patient's dietary regimen

Inclusion Terms
  • Caregiver's underdosing of patient's medication NOS
  • Caregiver's underdosing with patient's medication NOS
Inclusion Terms

Caregiver's nonadherence to patient's medical treatment

Inclusion Terms
  • Personal history of parasuicide
  • Personal history of self-poisoning
  • Personal history of suicide attempt
Inclusion Terms
  • Personal history of nonsuicidal self-injury
  • Personal history of self-inflicted injury without suicidal intent
  • Personal history of self-mutilation
Inclusion Terms

At risk for falling

Inclusion Terms
  • Individual (civilian or military) with past history of military war, peacekeeping and humanitarian deployment (current or past conflict)
  • Returned from military deployment
Inclusion Terms
  • Personal history of serving in the armed forces
  • Personal history of veteran
Inclusion Terms

Increased risk for social isolation

Code Also

, if applicable, to identify underdosing of specific drug (T36-T50 with final character 6)

Code Also

, if applicable, food insecurity (Z59.4-)

Code Also

, if applicable, food insecurity (Z59.4-)

Code Also

mental health disorder, if known

Child Codes (More Specific Codes for Z91):

Z91.0 - Allergy status, other than to drugs and biological substances Z91.01 - Food allergy status Z91.010 - Allergy to peanuts Z91.011 - Allergy to milk products Z91.012 - Allergy to eggs Z91.013 - Allergy to seafood Z91.014 - Allergy to mammalian meats Z91.018 - Allergy to other foods Z91.02 - Food additives allergy status Z91.03 - Insect allergy status Z91.030 - Bee allergy status Z91.038 - Other insect allergy status Z91.04 - Nonmedicinal substance allergy status Z91.040 - Latex allergy status Z91.041 - Radiographic dye allergy status Z91.048 - Other nonmedicinal substance allergy status Z91.09 - Other allergy status, other than to drugs and biological substances Z91.1 - Patient's noncompliance with medical treatment and regimen Z91.11 - Patient's noncompliance with dietary regimen Z91.110 - Patient's noncompliance with dietary regimen due to financial hardship Z91.118 - Patient's noncompliance with dietary regimen for other reason Z91.119 - Patient's noncompliance with dietary regimen due to unspecified reason Z91.12 - Patient's intentional underdosing of medication regimen Z91.120 - Patient's intentional underdosing of medication regimen due to financial hardship Z91.128 - Patient's intentional underdosing of medication regimen for other reason Z91.13 - Patient's unintentional underdosing of medication regimen Z91.130 - Patient's unintentional underdosing of medication regimen due to age-related debility Z91.138 - Patient's unintentional underdosing of medication regimen for other reason Z91.14 - Patient's other noncompliance with medication regimen Z91.141 - Patient's other noncompliance with medication regimen due to financial hardship Z91.148 - Patient's other noncompliance with medication regimen for other reason Z91.15 - Patient's noncompliance with renal dialysis Z91.151 - Patient's noncompliance with renal dialysis due to financial hardship Z91.158 - Patient's noncompliance with renal dialysis for other reason Z91.19 - Patient's noncompliance with other medical treatment and regimen Z91.190 - Patient's noncompliance with other medical treatment and regimen due to financial hardship Z91.198 - Patient's noncompliance with other medical treatment and regimen for other reason Z91.199 - Patient's noncompliance with other medical treatment and regimen due to unspecified reason Z91.4 - Personal history of psychological trauma, not elsewhere classified Z91.41 - Personal history of adult abuse Z91.410 - Personal history of adult physical and sexual abuse Z91.411 - Personal history of adult psychological abuse Z91.412 - Personal history of adult neglect Z91.413 - Personal history of adult financial abuse Z91.414 - Personal history of adult intimate partner abuse Z91.419 - Personal history of unspecified adult abuse Z91.42 - Personal history of forced labor or sexual exploitation Z91.49 - Other personal history of psychological trauma, not elsewhere classified Z91.5 - Personal history of self-harm Z91.51 - Personal history of suicidal behavior Z91.52 - Personal history of nonsuicidal self-harm Z91.8 - Other specified personal risk factors, not elsewhere classified Z91.81 - History of falling Z91.82 - Personal history of military deployment Z91.83 - Wandering in diseases classified elsewhere Z91.84 - Oral health risk factors Z91.841 - Risk for dental caries, low Z91.842 - Risk for dental caries, moderate Z91.843 - Risk for dental caries, high Z91.849 - Unspecified risk for dental caries Z91.85 - Personal history of military service Z91.89 - Other specified personal risk factors, not elsewhere classified Z91.A - Caregiver's noncompliance with patient's medical treatment and regimen Z91.A1 - Caregiver's noncompliance with patient's dietary regimen Z91.A10 - Caregiver's noncompliance with patient's dietary regimen due to financial hardship Z91.A18 - Caregiver's noncompliance with patient's dietary regimen for other reason Z91.A2 - Caregiver's intentional underdosing of patient's medication regimen Z91.A20 - Caregiver's intentional underdosing of patient's medication regimen due to financial hardship Z91.A28 - Caregiver's intentional underdosing of medication regimen for other reason Z91.A3 - Caregiver's unintentional underdosing of patient's medication regimen Z91.A4 - Caregiver's other noncompliance with patient's medication regimen Z91.A41 - Caregiver's other noncompliance with patient's medication regimen due to financial hardship Z91.A48 - Caregiver's other noncompliance with patient's medication regimen for other reason Z91.A5 - Caregiver's noncompliance with patient's renal dialysis Z91.A51 - Caregiver's noncompliance with patient's renal dialysis due to financial hardship Z91.A58 - Caregiver's noncompliance with patient's renal dialysis for other reason Z91.A9 - Caregiver's noncompliance with patient's other medical treatment and regimen Z91.A91 - Caregiver's noncompliance with patient's other medical treatment and regimen due to financial hardship Z91.A98 - Caregiver's noncompliance with patient's other medical treatment and regimen for other reason

About ICD-10-CM Code Z91 (Personal risk factors)

ICD-10-CM code Z91 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM Z91 became effective on October 1, 2024.

This page provides detailed information about Z91 - Personal risk factors, not elsewhere classified. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Personal risk factors related to not elsewhere classified.