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    v1.0.28
    OpenPayerBilling CodesMental disorders due to known physiological conditionsICD-10-CM f03-unspecified-dementia
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    ICD-10-CM Code For Unspecified Dementia: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group F03 includes diagnoses for dementia that are not otherwise specified, covering cognitive decline and impairment without a documented subtype such as Alzheimer disease or vascular dementia. These ICD-10-CM diagnosis codes are used to document clinical encounters where the dementia etiology is unspecified or undetermined, capturing disease severity and the impact on cognition and daily functioning. Accurate coding within the ICD-10-CM F03 group supports proper claim adjudication and complete clinical documentation for services related to cognitive impairment.

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    ICD-10-CM F03: Unspecified Dementia Overview

    The ICD-10-CM F03 group represents diagnoses for dementia that are not specified as a particular subtype and reflects cognitive decline due to known physiological conditions. These codes target neurocognitive disorders affecting memory, thinking, and daily functioning, generally in older adults. Accurate coding matters for appropriate reimbursement because it informs payer decisions and supports clinical documentation of patient complexity.

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    When to Use

    Use a code from this group when a patient has dementia documented but the clinician has not specified a subtype or the workup is inconclusive regarding etiology. These codes apply for encounters focused on management of dementia symptoms, cognitive assessment, or when the documentation explicitly states the dementia is unspecified.

    ICD-10-CM Codes

    24 rows

    ICD-10-CM CodeDescription
    F03.90Unspecified dementia, unspecified severity, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety
    F03.911Unspecified dementia, unspecified severity, with agitation
    F03.918Unspecified dementia, unspecified severity, with other behavioral disturbance
    F03.92Unspecified dementia, unspecified severity, with psychotic disturbance
    F03.93Unspecified dementia, unspecified severity, with mood disturbance
    F03.94Unspecified dementia, unspecified severity, with anxiety
    F03.A0Unspecified dementia, mild, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety
    F03.A11Unspecified dementia, mild, with agitation
    F03.A18Unspecified dementia, mild, with other behavioral disturbance
    F03.A2Unspecified dementia, mild, with psychotic disturbance
    F03.A3Unspecified dementia, mild, with mood disturbance
    F03.A4Unspecified dementia, mild, with anxiety
    F03.B0Unspecified dementia, moderate, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety
    F03.B11Unspecified dementia, moderate, with agitation
    F03.B18Unspecified dementia, moderate, with other behavioral disturbance
    F03.B2Unspecified dementia, moderate, with psychotic disturbance
    F03.B3Unspecified dementia, moderate, with mood disturbance
    F03.B4Unspecified dementia, moderate, with anxiety
    F03.C0Unspecified dementia, severe, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety
    F03.C11Unspecified dementia, severe, with agitation

    Showing 1–20 of 24

    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

    • An elderly patient with gradually worsening memory loss, disorientation to time, difficulty managing finances and medications, and no documented etiology after history, exam, and basic labs. The patient or caregiver brings them to outpatient neurology or primary care for cognitive assessment because functional decline is noticed over months but investigations do not show a specific cause; a nonspecific dementia diagnosis from this group is assigned when dementia is present but the subtype is unspecified. Typical codes: F03.90, F03.91

    • An older adult presents to the emergency department with acute confusion, agitation, and inability to care for self; delirium workup and imaging fail to identify a reversible cause and there is a background of progressive cognitive decline of unknown subtype. After stabilization and exclusion of treatable contributors, the admitting team documents dementia without specification of type or behavioral disturbance to account for impaired baseline cognition and care needs. Typical codes: F03.91, F03.918

    • A patient in a skilled nursing facility with chronic memory impairment and behavioral symptoms (e.g., wandering, intermittent aggression) is hospitalized for a hip fracture; the facility notes preexisting dementia but the medical record lacks documentation of a specific dementia etiology. For hospital record and care planning, an unspecified dementia code from this group is used as a comorbid chronic condition impacting discharge planning and long-term care needs. Typical codes: F03.92, F03.93

    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

    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

    F06-OTHER-MENTAL-DISORDERS-SECONDARY

    ICD-10-CM Code For Other Mental Disorders 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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