major neurocognitive or neurodevelopmental disorders may experience  a restless urge to
wander that places them at risk for falls and causes them to leave supervised settings with-
out needed accompaniment. This category excl udes individuals whose intent is to escape
an unwanted housing situation (e.g., childre n who are running away from home, patients
who no longer wish to remain in the hospital) or those who walk or pace as a result of med-
ication-induced akathisia.
Coding note: First code associated mental disorder  (e.g., major neurocognitive disor-
der, autism spectrum disorder), then co de V40.31 (Z91.83) wandering associated with
[specific mental disorder].
V62.89 (R41.83) Borderline Intellectual Functioning
This category can be used when an individual’s borderline intellectual functioning is the fo-
cus of clinical attention or has an impact on the individual’s treatmen t or prognosis. Differ-
entiating borderline intellectual functioning and mild intellectual disability (intellectual
developmental disorder) requires careful asse ssment of intellectual and adaptive functions
and their discrepanc ies, particularly in the presence of co-occurring mental disorders that
may affect patient compliance with standardized  testing procedures (e.g., schizophrenia or
attention-deficit/hyperactivity diso rder with severe impulsivity).