F06.8 – Other specified mental disorders due to known physiological condition

F06.8 – Other specified mental disorders due to known physiological condition

F06.8 is an ICD-10-CM code for other specified mental disorders due to known physiological condition. Discover how to use this code in this guide.

By Patricia Buenaventura on Jul 16, 2025.

Fact Checked by Karina Jimenea.

Use Code

F06.8 diagnosis code: Other specified mental disorders due to known physiological condition

  • F06.8 is a billable ICD-10-CM code used for the diagnosis of Other specified mental disorders due to known physiological condition.
  • This ICD-10-CM code is used to diagnose other specified mental disorders due to known physiological condition in America. Internationally, it may have a different code.
  • The umbrella category of this code is “Mental, Behavioral, and Neurodevelopmental disorders” under “Mental disorders due to known physiological conditions" which includes endocrine disorder mental disorders, somatic illness mental disorders, exogenous hormone mental disorders, systemic disease affecting the brain mental disorders.
  • Note that the underlying physiological condition should be coded first.

Is F06.8 billable?

Yes, it is billable, which means one can use it for insurance reimbursement.

Clinical information

F06.8 can have conditions like epileptic psychosis NOS, obsessive-compulsive and related disorders due to a known physiological condition, organic dissociative disorder, and organic emotional labile asthenic disorder.

Symptoms will vary depending on the condition. Here's a list of the possible signs and symptoms per condition. 

  • Epileptic psychosis NOS: Delusions, bizarre thoughts/behavior, insomnia, depressive/manic psychosis, unresponsiveness, and automatic movements. One important thing to note here is even within this condition, there are different types of psychosis and symptoms. 
  • Obsessive-compulsive and related disorder due to a known physiological condition: Fear of harming yourself or others deliberately or by mistake, contamination, need for orderliness, ordering, arranging, repeating words in their head, avoiding places/situations that could trigger obsessive thoughts, etc. 
  • Organic dissociative disorder: Feeling disconnected/uncertain about yourself, forgetting important things about yourself, having multiple identities, and feeling little to no physical pain. 
  • Organic emotional labile asthenic disorder: Rapidly changing feelings, violent mood swings, exhaustion after exerting even the slightest effort, dizziness, pain, and fatigue. 

Though the causes of some of these conditions are inconclusive, some may be induced by medication the patient is taking. Diagnosis will require a physical examination, an interview, and a copy of one's medical history. 

Treatment, on the other hand, is usually either therapy or medication, in addition to receiving support from the family and an expert physician. 

Synonyms include

  • Organic psychotic condition
  • Memory loss due to organic brain damage
  • Memory disorder co-occurrent and due to brain damage
  • Behavioral syndrome associated with physical factors and physiological disturbance
  • Epileptic psychosis
  • Paranoid-hallucinatory epileptic psychosis

Other ICD-10 codes commonly used for other mental disorders due to known physiological conditions

  • F06.0: Psychotic disorder with hallucinations due to known physiological condition
  • F06.1: Catatonic disorder due to known physiological condition
  • F06.2: Psychotic disorder with delusions due to known physiological condition
  • F06.3: Mood disorder due to known physiological condition
  • F06.4: Anxiety disorder due to known physiological condition
  • F06.7: Mild neurocognitive disorders due to known physiological condition

Related ICDs

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