Mental disorder, not otherwise specified (F99)

• ICD-10 Index

  • Mental and behavioural disorders (F00–F99)

    • Unspecified mental disorder (F99)

      • Mental disorder, not otherwise specified (F99)

        • F99 - Mental disorder, not otherwise specified BILLABLE CODE

Instructional Notations

Inclusion Terms Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.

• Mental illness NOS

Type 1 Excludes Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

• unspecified mental disorder due to known physiological condition F09