ICD-10-CM-2023: F09 Unspecified mental disorder due to known physiological condition

F01-F09	Mental disorders due to known physiological conditions
	Info:	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.
F09	Unspecified mental disorder due to known physiological condition
	Info:	Mental disorder NOS due to known physiological condition Organic brain syndrome NOS Organic mental disorder NOS Organic psychosis NOS Symptomatic psychosis NOS
	Code first	the underlying physiological condition
	Excl1.:	mild neurocognitive disorder due to known physiological condition (F06.7-) psychosis NOS (F29)

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