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F03Non-billableSave

F03 - Unspecified dementia

ICD-10-CM Chapter 5: Mental, Behavioral and Neurodevelopmental disorders · F01-F09 Mental disorders due to known physiological conditions (F01-F09) · Top-level category · FY2027

Coding Guidance

F03 is a non-billable heading. Report one of the 4 more specific codes below.

Applicable To

Inclusion terms listed under F03 in the ICD-10-CM tabular list.

  • Major neurocognitive disorder NOS
  • Presenile dementia NOS
  • Presenile psychosis NOS
  • Primary degenerative dementia NOS
  • Senile dementia NOS
  • Senile dementia depressed or paranoid type
  • Senile psychosis NOS

Includes, Excludes and Coding Notes

Excludes 2 — Not Included HereFrom F03

Not part of this code; report both codes when the patient has both conditions.

  • dementia with delirium or acute confusional state (F05)
  • mild memory disturbance due to known physiological condition (F06.8)
NotesFrom F01-F09 Mental disorders due to known physiological conditions (F01-F09)

Instructional notes from the ICD-10-CM tabular list.

  • 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.
IncludesFrom Chapter F01-F99

Conditions this code covers.

  • disorders of psychological development
Excludes 2 — Not Included HereFrom Chapter F01-F99

Not part of this code; report both codes when the patient has both conditions.

  • symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)

More Specific Codes (4)

F03.9Unspecified dementia, unspecified severity→F03.AUnspecified dementia, mild→F03.BUnspecified dementia, moderate→F03.CUnspecified dementia, severe→

Related condition guides

Documentation requirements, coding pitfalls and FAQs for conditions coded with F03.