Current
F09 — Unspecified mental disorder due to known physiological condition
Part of Chapter 5: Mental, Behavioral and Neurodevelopmental disorders , block Mental disorders due to known physiological conditions (F01-F09) .
Official Notes
Inclusion Terms
Mental disorder NOS due to known physiological condition
Inclusion Terms
Organic brain syndrome NOS
Inclusion Terms
Organic mental disorder NOS
Inclusion Terms
Organic psychosis NOS
Inclusion Terms
Symptomatic psychosis NOS
Code First
the underlying physiological condition
Excludes1
mild neurocognitive disorder due to known physiological condition ( F06.7- )
Excludes1
psychosis NOS ( F29 )
Child Codes
F09 has no child codes in the FY 2027 release -- it is used on its own.
Referenced By
Official notes on these codes cite F09.
FY 2027 effective October 1, 2026 · CDC NCHS and CMS