prevalence and onset reflect those of  the etiological medical condition.
Differential Diagnosis
A separate diagnosis of catatonic disorder due to another medical condition is not given if
the catatonia occurs exclusively during the course of a delirium or neuroleptic malignant
syndrome. If the individual is currently taking neurolep tic medication, consideration
should be given to medication -induced movement disorders (e.g., abnormal positioning
may be due to neuroleptic-induced acute dy stonia) or neuroleptic malignant syndrome
(e.g., catatonic-like features may be present,  along with associated vital sign and/or labo-
ratory abnormalities). Catatonic symptoms ma y be present in any of the following five
psychotic disorders: brief psychotic disorder , schizophreniform disorder, schizophrenia,
schizoaffective disorder, and substance/medication-induced psychotic disorder. It may
also be present in some of the neurodevelopme ntal disorders, in all of the bipolar and de-
pressive disorders,  and in other mental disorders. 
Unspecified Catatonia
 
This category applies to presentations in which symptoms characteristic of catatonia
cause clinically significant distress or impairm ent in social, occupational, or other impor-
tant areas of functioning but either the nature of the underlying mental disorder or other
medical condition is unclear, full criteria for catatonia are not met, or there is insufficient
information to make a more specific diagnosis (e.g., in emergency room settings). 
Coding note:  Code first 781.99 (R29.818)  other symptoms involving nervous and muscu-
loskeletal systems, followed by 293.89 (F06.1)  unspecified catatonia.