10ICD Code Hub

Z91.83

Billable code

Wandering in diseases classified elsewhere

The ICD-10 code for wandering in diseases classified elsewhere is Z91.83.

Clinical notes

Code first

This code represents a manifestation of an underlying disease. Coding convention requires the underlying (etiology) code to be sequenced first, with this code listed second.

  • 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-)

Documentation support

General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.

Related codes in this category

ICD-9-CM equivalent

Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.

View full ICD-10 → ICD-9 crosswalk →

Associated MS-DRGs

Z91.83 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.

Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.