ICD-10-CM › F01-F99 › F01-F09 › F03 Unspecified dementia › F03.C

F03.C

Unspecified dementia, severe

Not billableICD-10-CM diagnosis code.

This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.

A category header for its whole life, FY2023 onwards. It has never been valid for submission on its own.

Submit one of these 5 more specific codes instead:

  • F03.C0 Unspecified dementia, severe, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety
  • F03.C1 Unspecified dementia, severe, with behavioral disturbance (also a header)
  • F03.C2 Unspecified dementia, severe, with psychotic disturbance
  • F03.C3 Unspecified dementia, severe, with mood disturbance
  • F03.C4 Unspecified dementia, severe, with anxiety

What has happened to this code

Every change the publisher made, from 2023 to now.

  1. FY2023 Added to the code set Unspecified dementia, severe

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

Inherited from F03 Unspecified dementia

Excludes2 - not included here

  • dementia with delirium or acute confusional state (F05)
  • mild memory disturbance due to known physiological condition (F06.8)

Also known as

  • 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

Inherited from the F01-F09 section Mental disorders due to known physiological conditions (F01-F09)

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.

How CDC's index refers to this code

Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.

Showing 40 of 49 index phrases.

Codes in the same group

CodeDescriptionStatus
F03.9 Unspecified dementia, unspecified severity Not billable
F03.A Unspecified dementia, mild Not billable
F03.B Unspecified dementia, moderate Not billable