Z91.83 is the authoritative medical code for Wandering in diseases classified elsewhere. This classification is used in medical billing and clinical recording to specify the clinical criteria for wandering in diseases classified elsewhere (ICD-10-CM Z91.83), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Wandering in diseases classified elsewhere is a billable ICD-10-CM diagnosis code Z91.83. 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-). 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-). Code also: any follow-up examination Z08-Z09.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for Z91.83 in the official ICD-10-CM tabular list.
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- 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-)
Code First
Underlying conditions that must be sequenced before this code.
- 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-)
Code Also
Additional codes that may be required to fully describe the encounter.
- any follow-up examination Z08-Z09
Frequently Asked Questions (FAQ) & Clinical Guidance
Can Z91.83 be reported alongside related conditions?
Per Excludes2 instructions, Z91.83 and the following may both be reported when both are present: 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.-).
Does Z91.83 need to be sequenced after another code?
Yes. Code first: underlying disorder such as:; Alzheimer's disease (G30.-); autism or pervasive developmental disorder (F84.-); intellectual disabilities (F70-F79).
Codes in This Family (40)
Official ICD-10-CM classifications in the same code family as Z91.83, with their registry titles.
- Z91 — Personal risk factors, not elsewhere classified
- 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
- Z91.0110 — Allergy to milk products, unspecified
- Z91.0111 — Allergy to milk products with tolerance to baked milk
- Z91.0112 — Allergy to milk products with reactivity to baked milk
- Z91.012 — Allergy to eggs
- Z91.0120 — Allergy to eggs, unspecified
- Z91.0121 — Allergy to eggs with tolerance to baked egg
- Z91.0122 — Allergy to eggs with reactivity to baked egg
- 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
Indexed Clinical Terms (1)
Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.
- Wandering, in diseases classified elsewhere
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures: