Other Mental Disorders and Additional Codes

What is the purpose of the Other Mental Disorders and Additional Codes chapter

Provide diagnostic codes for clinically significant psychiatric presentations that do not meet criteria for disorders in earlier DSM chapters

What must be present for a presentation in this chapter to count as a mental disorder

Clinically significant distress or impairment in social / occupational / or other important functioning

What are the main diagnostic categories in this chapter

Other specified mental disorder due to another medical condition / unspecified mental disorder due to another medical condition / other specified mental disorder / unspecified mental disorder / no diagnosis or condition

What is other specified mental disorder due to another medical condition

Psychiatric symptoms caused directly by another medical condition that do not meet criteria for a specific mental disorder due to that medical condition and the clinician states why

What code is used for other specified mental disorder due to another medical condition

F06.8

What causal relationship is required for a mental disorder due to another medical condition

The psychiatric symptoms must be a direct physiological consequence of the medical condition

What must be coded first for a mental disorder due to another medical condition

The underlying medical condition

What is an example of other specified mental disorder due to another medical condition

Dissociative symptoms caused by complex partial seizures

What does other specified mean

The clinician states the specific reason the presentation does not meet criteria for a more specific diagnosis

What is unspecified mental disorder due to another medical condition

Psychiatric symptoms caused directly by another medical condition that do not meet full criteria for a specific disorder and the clinician does not state why

What code is used for unspecified mental disorder due to another medical condition

F09

When is unspecified mental disorder due to another medical condition especially useful

When there is insufficient information for a more specific diagnosis such as an emergency setting

What is other specified mental disorder

Clinically significant psychiatric symptoms that do not meet criteria for a specific DSM mental disorder and the clinician states why

What code is used for other specified mental disorder

F99

What conditions must be true before using other specified mental disorder

Symptoms cause distress or impairment / no specific DSM disorder fits / no other specified category elsewhere fits / no other mental disorder diagnosis applies

What is unspecified mental disorder

Clinically significant psychiatric symptoms that do not meet criteria for a specific mental disorder and the clinician does not state why

What code is used for unspecified mental disorder

F99

When is unspecified mental disorder especially useful

When there is not enough information to make a more specific diagnosis

What is the main difference between other specified and unspecified mental disorder

Other specified = clinician explains why criteria are not met / unspecified = clinician does not explain why

What is the main difference between other specified mental disorder and other specified mental disorder due to another medical condition

The medical condition diagnosis requires evidence that symptoms are directly caused physiologically by a medical condition

What is the no diagnosis or condition code

Z03.89

When is no diagnosis or condition used

The person has been evaluated and no mental disorder or other condition is present

Does failure to meet criteria for one specific disorder automatically mean other specified mental disorder should be used

No / another DSM diagnosis or another more specific specified or unspecified category should be considered first

Are other specified and unspecified mental disorder intended as first choice diagnoses

No / they are residual categories used after more specific DSM diagnoses have been considered

What is the highest yield specified versus unspecified shortcut

Specified = clinician gives the reason / unspecified = clinician does not give the reason

What is the highest yield medical condition shortcut

If another medical condition directly causes the psychiatric symptoms then code the medical condition first and use a mental disorder due to that medical condition category

What is the highest yield no diagnosis shortcut

Evaluation finds no mental disorder or condition = Z03.89 no diagnosis or condition