FY2027 ICD-10-CM reference
F03: Unspecified dementia
By the HCC Buddy Coding Team
The official ICD-10-CM descriptor is Unspecified dementia. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Nonbillable heading. Verified against the official FY2027 order file.
More specific FY2027 codes
- F03.9: Unspecified dementia, unspecified severityNonbillable heading
- F03.A: Unspecified dementia, mildNonbillable heading
- F03.B: Unspecified dementia, moderateNonbillable heading
- F03.C: Unspecified dementia, severeNonbillable heading
FY2027 Tabular instructions
Instructions below include applicable chapter, section and parent-code notes. Each note identifies where it appears in the official source.
Includes
disorders of psychological development
Source: F01-F99 (chapter, inherited).
Excludes2
symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)
Source: F01-F99 (chapter, inherited).
Instructional 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.
Source: F01-F09 (section, inherited).
Instructional note
Major neurocognitive disorder NOS
Source: F03 (category, direct).
Instructional note
Presenile dementia NOS
Source: F03 (category, direct).
Instructional note
Presenile psychosis NOS
Source: F03 (category, direct).
Instructional note
Primary degenerative dementia NOS
Source: F03 (category, direct).
Instructional note
Senile dementia NOS
Source: F03 (category, direct).
Instructional note
Senile dementia depressed or paranoid type
Source: F03 (category, direct).
Instructional note
Senile psychosis NOS
Source: F03 (category, direct).
Excludes2
dementia with delirium or acute confusional state (F05)
Source: F03 (category, direct).
Excludes2
mild memory disturbance due to known physiological condition (F06.8)
Source: F03 (category, direct).
Compare the FY2027 additions, removals and billable-status changes
What does F03 mean in FY2027?
The official ICD-10-CM descriptor is Unspecified dementia. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Is F03 billable in FY2027?
The FY2027 order file marks F03 as a nonbillable heading. Select a complete billable child code.
Does F03 map to an HCC?
Risk-model mapping is not applicable to this nonbillable heading. Check a complete billable child code.
Source: CMS FY2027 ICD-10-CM order file. Payment model: CMS CY 2027 Rate Announcement. Read the FY2027 Official Guidelines.
Review the FY2026 April edition