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F02Non-billableSave

F02 - Dementia in other diseases classified elsewhere

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

F02 is a non-billable heading. Report one of the 4 more specific codes below.

Includes, Excludes and Coding Notes

IncludesFrom F02

Conditions this code covers.

  • Major neurocognitive disorder in other diseases classified elsewhere
Excludes 1 — Not Coded HereFrom F02

Mutually exclusive: these conditions are never reported together with this code.

  • mild neurocognitive disorder due to known physiological condition with or without behavioral disturbance (F06.7-)
Excludes 2 — Not Included HereFrom F02

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

  • dementia in alcohol and psychoactive substance disorders (F10-F19, with .17, .27, .97)
  • vascular dementia (F01.5-, F01.A-, F01.B-, F01.C-)
Code FirstFrom F02

Sequence the underlying condition before this code.

  • the underlying physiological condition, such as:
  • Alzheimer's (G30.-)
  • cerebral lipidosis (E75.4)
  • Creutzfeldt-Jakob disease (A81.0-)
  • epilepsy and recurrent seizures (G40.-)
  • hepatolenticular degeneration (E83.01)
  • human immunodeficiency virus [HIV] disease (B20)
  • Huntington's disease (G10)
  • hypercalcemia (E83.52)
  • hypothyroidism, acquired (E00-E03.-)
  • intoxications (T36-T65)
  • Jakob-Creutzfeldt disease (A81.0-)
  • multiple sclerosis (G35-)
  • neurocognitive disorder with Lewy bodies (G31.83)
  • neurosyphilis (A52.17)
  • niacin deficiency [pellagra] (E52)
  • other frontotemporal neurocognitive disorder (G31.09)
  • Parkinson's disease (G20.-)
  • Pick's disease (G31.01)
  • polyarteritis nodosa (M30.0)
  • prion disease (A81.9)
  • systemic lupus erythematosus (M32.-)
  • traumatic brain injury (S06.-)
  • trypanosomiasis (B56.-, B57.-)
  • vitamin B deficiency (E53.8)
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)

F02.8Dementia in other diseases classified elsewhere, unspecified severity→F02.ADementia in other diseases classified elsewhere, mild→F02.BDementia in other diseases classified elsewhere, moderate→F02.CDementia in other diseases classified elsewhere, severe→

Related condition guides

Documentation requirements, coding pitfalls and FAQs for conditions coded with F02.