Unspecified Phencyclidine-Related Disorder 533
depressive disorder (“Depressive Disorders” ); and other hallucinogen–induced anxiety
disorder (“Anxiety Disorders”). For other hallu cinogen intoxication delirium, see the cri-
teria and discussion of delirium in the chapter “Neurocognitive Di sorders.” These hallu-
cinogen-induced disorders are diagnosed inst ead of other hallucinogen intoxication only
when the symptoms are sufficiently severe to warrant independent clinical attention. 
Unspecified Phencyclidine-Related Disorder
292.9 (F16.99)
This category applies to presentations in which symptoms characteristic of a phencycli-
dine-related disorder that cause clinically significant distress or impairment in social, oc-
cupational, or other important areas of functioning predominate but do not meet the full
criteria for any specific phencyclidine-related disorder or any of the disorders in the sub-
stance-related and addictive disorders diagnostic class.
Unspecified Hallucinogen-Related Disorder
292.9 (F16.99)
This category applies to presentations in which symptoms characteristic of a hallucinogen-
related disorder that cause clinically significant distress or impairment in social, occupa-
tional, or other important areas of functioning predominate but do not meet the full criteria
for any specific hallucinogen-related disorder or any of the disorders in the substance-
related and addictive disorders diagnostic class.
Inhalant-Related Disorders
Inhalant Use Disorder
Inhalant Intoxication
Other Inhalant-Induced Disorders
Unspecified Inhalant-Related Disorder
Inhalant Use Disorder
Diagnostic Criteria  
A. A problematic pattern of use of a hydrocarbon-based inhalant substance leading to
clinically significant impairment or distress, as manifested by at least two of the follow-