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FY2027 ICD-10-CM reference

F02.80: Dementia in other diseases classified elsewhere, unspecified severity, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety

By the HCC Buddy Coding Team

The official ICD-10-CM descriptor is Dementia in other diseases classified elsewhere, unspecified severity, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.

Billable code. Verified against the official FY2027 order file.

CMS-HCC V28

HCC 127: Dementia, Mild or Unspecified · RAF 0.341, Community Non-Dual Aged (CNA)

Payment year 2027, 2026 dates of service. HCC from the CMS 2027 Initial ICD-10-CM Mappings; RAF from the CMS-HCC V28 relative factors. For 2027 dates of service, CMS has not yet published the payment year 2028 mappings.

CMS-HCC V24

Not used for payment year 2027 Medicare Advantage payment

ESRD

Source verification pending

PACE

Source verification pending

RxHCC

Source verification pending

HHS-HCC

Source verification pending

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).

Includes

Major neurocognitive disorder in other diseases classified elsewhere

Source: F02 (category, inherited).

Code first

the underlying physiological condition, such as:

Source: F02 (category, inherited).

Code first

Alzheimer's (G30.-)

Source: F02 (category, inherited).

Code first

cerebral lipidosis (E75.4)

Source: F02 (category, inherited).

Code first

Creutzfeldt-Jakob disease (A81.0-)

Source: F02 (category, inherited).

Code first

epilepsy and recurrent seizures (G40.-)

Source: F02 (category, inherited).

Code first

hepatolenticular degeneration (E83.01)

Source: F02 (category, inherited).

Code first

human immunodeficiency virus [HIV] disease (B20)

Source: F02 (category, inherited).

Code first

Huntington's disease (G10)

Source: F02 (category, inherited).

Code first

hypercalcemia (E83.52)

Source: F02 (category, inherited).

Code first

hypothyroidism, acquired (E00-E03.-)

Source: F02 (category, inherited).

Code first

intoxications (T36-T65)

Source: F02 (category, inherited).

Code first

Jakob-Creutzfeldt disease (A81.0-)

Source: F02 (category, inherited).

Code first

multiple sclerosis (G35-)

Source: F02 (category, inherited).

Code first

neurocognitive disorder with Lewy bodies (G31.83)

Source: F02 (category, inherited).

Code first

neurosyphilis (A52.17)

Source: F02 (category, inherited).

Code first

niacin deficiency [pellagra] (E52)

Source: F02 (category, inherited).

Code first

other frontotemporal neurocognitive disorder (G31.09)

Source: F02 (category, inherited).

Code first

Parkinson's disease (G20.-)

Source: F02 (category, inherited).

Code first

Pick's disease (G31.01)

Source: F02 (category, inherited).

Code first

polyarteritis nodosa (M30.0)

Source: F02 (category, inherited).

Code first

prion disease (A81.9)

Source: F02 (category, inherited).

Code first

systemic lupus erythematosus (M32.-)

Source: F02 (category, inherited).

Code first

traumatic brain injury (S06.-)

Source: F02 (category, inherited).

Code first

trypanosomiasis (B56.-, B57.-)

Source: F02 (category, inherited).

Code first

vitamin B deficiency (E53.8)

Source: F02 (category, inherited).

Excludes1

mild neurocognitive disorder due to known physiological condition with or without behavioral disturbance (F06.7-)

Source: F02 (category, inherited).

Excludes2

dementia in alcohol and psychoactive substance disorders (F10-F19, with .17, .27, .97)

Source: F02 (category, inherited).

Excludes2

vascular dementia (F01.5-, F01.A-, F01.B-, F01.C-)

Source: F02 (category, inherited).

Instructional note

Dementia in other diseases classified elsewhere NOS

Source: F02.80 (self, direct).

Instructional note

Major neurocognitive disorder in other diseases classified elsewhere NOS

Source: F02.80 (self, direct).

Source: CMS FY2027 Tabular List and Alphabetic Index.

Open Tabular instructions and code details

Compare the FY2027 additions, removals and billable-status changes

What does F02.80 mean in FY2027?

The official ICD-10-CM descriptor is Dementia in other diseases classified elsewhere, unspecified severity, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.

Is F02.80 billable in FY2027?

The FY2027 order file marks F02.80 as billable. Check the complete Tabular instructions and documentation before assigning it.

Does F02.80 map to an HCC?

In the CMS 2027 Initial ICD-10-CM Mappings (payment year 2027, 2026 dates of service), F02.80 maps to CMS-HCC V28 HCC 127 (Dementia, Mild or Unspecified). For 2027 dates of service, CMS has not yet published the payment year 2028 mappings. ESRD, RxHCC, PACE and HHS-HCC mappings are still pending verification for FY2027.

Source: CMS FY2027 ICD-10-CM order file. Read the FY2027 Official Guidelines.

Review the FY2026 April edition