708 Other Mental Disorders
Unspecified Mental Disorder
Due to Another Medical Condition
294.9 (F09)
This category applies to presentations in which symptoms characteristic of a mental dis-
order due to another medical condition that cause clinically significant distress or impair-
ment in social, occupational, or other impor tant areas of functioning predominate but do
not meet the full criteria for any specific mental disorder due to another medical condition.
The unspecified mental disorder due to another  medical condition category is used in sit-
uations in which the clinician chooses not to specify the reason that the criteria are not met
for a specific mental disorder due to another medical condition, and includes presentations
for which there is insufficient information to make a more specific diagnosis (e.g., in emer-
gency room settings). This is done by recording the name of the disorder, with the specific
etiological medical condition inserted in plac e of “another medical condition.” Furthermore,
the diagnostic code for the specific medical condition must be listed immediately before
the code for the unspecified mental disorder due to another medical condition. For exam-
ple, dissociative symptoms due to complex partial seizures would be coded and recorded
as 345.40 (G40.209) complex partial seizures , 294.9 (F06.9) unspecified mental disorder
due to complex partial seizures. 
Other Specified Mental Disorder
300.9 (F99)
This category applies to presentations in which symptoms characteristic of a mental dis-
order that cause clinically significant distre ss or impairment in social, occupational, or oth-
er important areas of functioning predominate but do not meet the full criteria for any
specific mental disorder. The other specified m ental disorder category is used in situations
in which the clinician chooses to communicate the specific reason that the presentation
does not meet the criteria for any specific mental disorder. This is done by recording “other