Is F09 a mental health diagnosis?

Yes, code F09 is identified as a mental health diagnosis.

Is F09 an acceptable principal diagnosis?

No, code F09 is identified as an unacceptable principal diagnosis (Edit 113) due to OPPS coding requirements. However, this exclusion is ignored for specific bill types (12x, 22x, 81x, 82x).

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Medical Coding
ICD-10-CM
Chapter 5
F09

F09 Billable Code

Unspecified mental disorder due to known physiological condition

Effective From: 10/01/2016

Chapter Classification

Chapter 5 Mental, Behavioral and Neurodevelopmental disorders (F01-F99)

Section Detail

F01-F09 Mental disorders due to known physiological conditions (F01-F09)

Coding Guidelines & Notes

codeFirst

the underlying physiological condition

excludes1

mild neurocognitive disorder due to known physiological condition (F06.7-)
psychosis NOS (F29)

OPPS Editing Flags

External Cause No

Mental Health Yes

Manifestation (Edit 89) No

Code First Applicable ?This code represents a manifestation of an underlying disease. The underlying condition must be coded first as the principal diagnosis. No

Unacceptable PDX (Edit 113) Yes

PDX Exclusion Logic

OPPS Required: Yes
Bill Type Override: Yes

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