F09
Unspecified mental disorder due to known physiological condition
This code does not map to a risk-adjusting HCC in the loaded models.
Coding notes
Excludes 1 never coded together · Excludes 2 may co-exist
mild neurocognitive disorder due to known physiological condition (F06.7-) psychosis NOS (F29)
the underlying physiological condition
Mental disorder NOS due to known physiological condition Organic brain syndrome NOS Organic mental disorder NOS Organic psychosis NOS Symptomatic psychosis NOS
This block comprises a range of mental disorders grouped together on the basis of their having in common a demonstrable etiology in cerebral disease, brain injury, or other insult leading to cerebral dysfunction. The dysfunction may be primary, as in diseases, injuries, and insults that affect the brain directly and selectively; or secondary, as in systemic diseases and disorders that attack the brain only as one of the multiple organs or systems of the body that are involved.
disorders of psychological development
symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)
Official Guidelines for F09
FY 2026 ›Find F09 in the alphabetic index
18 index paths lead to this code
- Deficiency, deficient › cognitive
- Disorder › cognitive
- Organic › brain syndrome
- Organic › mental disorder
- Organic › psychosis
- Psychosis, psychotic › organic
- Psychosis, psychotic › symptomatic
- Syndrome › brain
- Disease, diseased › mental › organic
- Disorder › cognitive › due to general medical condition
- Disorder › mental › organic or symptomatic
- Syndrome › brain › with psychosis, psychotic reaction
- Syndrome › brain › organic
- Syndrome › brain › psycho-organic
- Syndrome › organic › brain
- Disorder › mental › due to › brain disease, damage and dysfunction
- Disorder › mental › due to › general medical condition
- Syndrome › brain › organic › post-traumatic › psychotic