2017/18 ICD-10-CM Diagnosis Code Z91.83

Wandering in diseases classified elsewhere

ICD-10-CM Coding Rules
Code First
Code First Help
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation. In most cases the manifestation codes will have in the code title, "in diseases classified elsewhere." Codes with this title are a component of the etiology/manifestation convention. The code title indicates that it is a manifestation code. "In diseases classified elsewhere" codes are never permitted to be used as first listed or principle diagnosis codes. They must be used in conjunction with an underlying condition code and they must be listed following the underlying condition.
  • underlying disorder such as:
  • Alzheimer's disease (
    ICD-10-CM Diagnosis Code G30
    • G30 Alzheimer's disease
      • G30.0 Alzheimer's disease with early onset
      • G30.1 Alzheimer's disease with late onset
      • G30.8 Other Alzheimer's disease
      • G30.9 Alzheimer's disease, unspecified
  • autism or pervasive developmental disorder (
    ICD-10-CM Diagnosis Code F84
    • F84 Pervasive developmental disorders
      • F84.0 Autistic disorder
      • F84.2 Rett's syndrome
      • F84.3 Other childhood disintegrative disorder
      • F84.5 Asperger's syndrome
      • F84.8 Other pervasive developmental disorders
      • F84.9 Pervasive developmental disorder, unspecified...
  • intellectual disabilities (F70-F79
    ICD-10-CM Range F70-F79

    Intellectual disabilities

    Code First
    • any associated physical or developmental disorders
    Type 1 Excludes
    • borderline intellectual functioning, IQ above 70 to 84 (R41.83)
    • F70 Mild intellectual disabilities
    • F71 Moderate intellectual disabilities
    • F72 Severe intellectual disabilities
    • F73 Profound intellectual disabilities
    • F78 Other intellectual disabilities
    • F79 Unspecified intellectual disabilities
  • unspecified dementia with behavioral disturbance (
    ICD-10-CM Diagnosis Code F03.9

    Unspecified dementia

      2016 2017 2018 Non-Billable/Non-Specific Code
The following code(s) above Z91.83 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to Z91.83:
  • Z00-Z99
    2018 ICD-10-CM Range Z00-Z99

    Factors influencing health status and contact with health services

    • Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
    • (a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
    • (b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.
    Factors influencing health status and contact with health services
  • Z77-Z99
    2018 ICD-10-CM Range Z77-Z99

    Persons with potential health hazards related to family and personal history and certain conditions influencing health status

    Code Also
    • any follow-up examination (Z08-Z09)
    Persons with potential health hazards related to family and personal history and certain conditions influencing health status
  • Z91
    ICD-10-CM Diagnosis Code Z91

    Personal risk factors, not elsewhere classified

      2016 2017 2018 Non-Billable/Non-Specific Code
    Type 2 Excludes
    • 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-)
    • personal history of physical injury and trauma (Z87.81, Z87.82-)
    • occupational exposure to risk factors (Z57.-)
    Personal risk factors, not elsewhere classified
Approximate Synonyms Present On Admission
POA Help
"Present On Admission" is defined as present at the time the order for inpatient admission occurs — conditions that develop during an outpatient encounter, including emergency department, observation, or outpatient surgery, are considered POA.
ICD-10-CM Z91.83 is grouped within Diagnostic Related Group(s) (MS-DRG v35.0):

Convert Z91.83 to ICD-9-CM

Code History
Code annotations containing back-references to Z91.83:

Diagnosis Index entries containing back-references to Z91.83:

ICD-10-CM Codes Adjacent To Z91.83
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
Z91.419 Personal history of unspecified adult abuse
Z91.49 Other personal history of psychological trauma, not elsewhere classified
Z91.5 Personal history of 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
Z91.89 Other specified personal risk factors, not elsewhere classified
Z92 Personal history of medical treatment
Z92.0 Personal history of contraception
Z92.2 Personal history of drug therapy
Z92.21 Personal history of antineoplastic chemotherapy

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.