F03.9
Unspecified dementia, unspecified severity
F03.9 is a non-billable ICD-10-CM code header for unspecified dementia, unspecified severity. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are F03.90 Unspecified dementia, unspecified severity, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety; F03.91 Unspecified dementia, unspecified severity, with behavioral disturbance; F03.92 Unspecified dementia, unspecified severity, with psychotic disturbance; F03.93 Unspecified dementia, unspecified severity, with mood disturbance and 1 more. Its coding notes include 3 Excludes2 entries.
Guidelines tip
From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.
Dementia codes depend on severity documented by the provider. If severity is not documented, the unspecified severity code is assigned. If severity progresses during an inpatient stay, one code is assigned for the highest level.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (1 note)
- symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)
Includes
Further defines or gives examples of the content of the category.
Also from chapter/block level (1 note)
- disorders of psychological development
Notes
Also from chapter/block level (1 note)
- 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.
More specific codes under F03.9 5
- F03.90Unspecified dementia, unspecified severity, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxietyBillable
- F03.91Unspecified dementia, unspecified severity, with behavioral disturbanceHeader
- F03.92Unspecified dementia, unspecified severity, with psychotic disturbanceBillable
- F03.93Unspecified dementia, unspecified severity, with mood disturbanceBillable
- F03.94Unspecified dementia, unspecified severity, with anxietyBillable