F99 Billable Code
Mental disorder, not otherwise specified
Effective From: 10/01/2016
Chapter Classification
Chapter 5
Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
Section Detail
F99
Unspecified mental disorder (F99)
Coding Guidelines & Notes
excludes1
- unspecified mental disorder due to known physiological condition (F09)
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)
No
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