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    v1.0.28
    OpenPayerBilling CodesMental disorders due to known physiological conditionsICD-10-CM f06-other-mental-disorders-secondary
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    ICD-10-CM Code For Other Mental Disorders Due To Known Physiological Condition: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group F06 includes mental disorders that arise as a direct consequence of an identifiable physiological condition, such as metabolic disorders, infections, neurological diseases, or toxic exposures, and covers manifestations like mood changes, cognitive impairment, and psychotic symptoms. These ICD-10-CM diagnosis codes are used to document clinical scenarios where psychiatric symptoms are secondary to another medical condition, capturing severity, organ system involvement, and clinical complexity relevant to management. Accurate coding within the ICD-10-CM F06 group supports proper claim adjudication and complete clinical documentation for appropriate reimbursement.

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    ICD-10-CM F06: Other Mental Disorders Due To Known Physiological Condition Overview

    This group represents mental disorders that are directly attributable to an identifiable physiological condition, such as metabolic, neurological, infectious, or toxic etiologies. It targets brain-related psychiatric manifestations including mood, cognitive, and behavioral disturbances secondary to a medical condition. Accurate coding matters for reimbursement because it links psychiatric symptoms to underlying medical diagnoses and supports appropriate claim adjudication.

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    When to Use

    Use a code from this group when clinical documentation indicates psychiatric symptoms are caused by or clearly linked to a specific physiological condition rather than a primary psychiatric disorder. Codes in this group are selected when the underlying medical etiology is known and documented alongside the mental disorder presentation.

    ICD-10-CM Codes

    12 rows

    ICD-10-CM CodeDescription
    F06.0Psychotic disorder with hallucinations due to known physiological condition
    F06.1Catatonic disorder due to known physiological condition
    F06.2Psychotic disorder with delusions due to known physiological condition
    F06.30Mood disorder due to known physiological condition, unspecified
    F06.31Mood disorder due to known physiological condition with depressive features
    F06.32Mood disorder due to known physiological condition with major depressive-like episode
    F06.33Mood disorder due to known physiological condition with manic features
    F06.34Mood disorder due to known physiological condition with mixed features
    F06.4Anxiety disorder due to known physiological condition
    F06.70Mild neurocognitive disorder due to known physiological condition without behavioral disturbance
    F06.71Mild neurocognitive disorder due to known physiological condition with behavioral disturbance
    F06.8Other specified mental disorders due to known physiological condition

    DRG Codes

    4 rows

    DRG CodeDescription
    884Organic Disturbances and Intellectual Disability
    974HIV with Major Related Condition with MCC
    975HIV with Major Related Condition with CC
    976HIV with Major Related Condition without CC/MCC

    Typical Clinical Scenarios

    • A 72-year-old patient with newly diagnosed small vessel ischemic changes on brain MRI presents to the emergency department with acute onset confusion, disorientation to time, and difficulty following commands after a urinary tract infection; the treating team attributes the cognitive disturbance to an underlying medical condition rather than a primary psychiatric disorder and documents a delirium-like presentation due to a physiological cause. Typical codes: F06.0, F06.30
    • A middle-aged patient with long-standing uncontrolled hyperthyroidism reports several months of persistent mood lability, irritability, and new-onset anxiety that began after medical workup confirmed thyrotoxicosis; symptoms are judged to be attributable to the endocrine disorder rather than a primary mood or anxiety disorder, so a mental disorder due to a known physiological condition is assigned. Typical codes: F06.4, F06.3
    • A 65-year-old patient with advanced Parkinson disease followed in neurology clinic develops progressive memory impairment and fluctuating attention over the past year, with neuropsychological testing supporting cognitive deficits consistent with a cognitive disorder secondary to the neurologic condition; the cognitive syndrome is coded as a mental disorder due to the known neurologic condition and documented as chronic and progressive. Typical codes: F06.31, F06.32

    Related Codes

    F01-VASCULAR-DEMENTIA

    ICD-10-CM Code For Vascular Dementia: Group Overview

    F02-DEMENTIA-IN-OTHER-DISEASES

    ICD-10-CM Code For Dementia In Other Diseases Classified Elsewhere: Group Overview

    F03-UNSPECIFIED-DEMENTIA

    ICD-10-CM Code For Unspecified Dementia: Group Overview

    F04-AMNESTIC-DISORDER-DUE-TO-KNOWN-PHYSIOLOGICAL-CONDITION

    ICD-10-CM Code For Amnestic Disorder Due To Known Physiological Condition: Group Overview

    F05-DELIRIUM-DUE-TO-PHYSIOLOGICAL-CONDITION

    ICD-10-CM Code For Delirium Due To Known Physiological Condition: Group Overview

    F07-PERSONALITY-AND-BEHAVIORAL-DISORDERS

    ICD-10-CM Code For Personality And Behavioral Disorders Due To Known Physiological Condition: Group Overview

    F09-UNSPECIFIED-MENTAL-DISORDER

    ICD-10-CM Code For Unspecified Mental Disorder Due To Known Physiological Condition: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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