Skip to content
HCC Buddy home

HCC Buddy Code Book

Skip to code book content
HCC Buddy
HCC Buddy
Alphabetic Index and Tabular path
HCC Buddy public API, FY2026 Apr updateSource load source requiredSource year 2026Updated 2026-04-01

Index trail

Unspecified dementia

See Tabular List: F03.B18

F03, Unspecified dementia

F03.B, Unspecified dementia, moderate

F03.B1, Unspecified dementia, moderate, with behavioral disturbance

F03.B18, Unspecified dementia, moderate, with other behavioral disturbance

Selected code, source checked for the selected effective period

Commonly confused codes

official source

Not listed for this effective period.

Code details and official notes

F03.B18

Unspecified dementia, moderate, with other behavioral disturbance

Open the shareable code page for F03.B18→
billableHCC mapped

Includes

official source
  • Unspecified dementia, moderate, with behavioral disturbances such as sleep disturbance, social disinhibition, or sexual disinhibition

Excludes 1

official source

No Excludes 1 note is listed in this source payload.

Excludes 2

official source

No Excludes 2 note is listed in this source payload.

Code First

official source

Not listed for this effective period.

Use Additional

official source
  • code, if applicable, to identify wandering in unspecified dementia (Z91.83)

Code Also

official source

Not listed for this effective period.

7th character

official source

Not listed for this code in the selected Tabular payload.

Placeholder X

official source

Not listed for this code in the selected Tabular payload.

Laterality

official source

No laterality instruction is listed for this code in the selected Tabular payload.

Effective period

source required
  • FY2026 Apr update
  • Source year 2026
  • Updated 2026-04-01
  • HCC Buddy public API
HCC Buddy
HCC Buddy
Alphabetic Index and Tabular path
HCC Buddy public API, FY2026 Apr updateSource load source requiredSource year 2026Updated 2026-04-01

Index trail

Unspecified dementia

See Tabular List: F03.B18

F03, Unspecified dementia

F03.B, Unspecified dementia, moderate

F03.B1, Unspecified dementia, moderate, with behavioral disturbance

F03.B18, Unspecified dementia, moderate, with other behavioral disturbance

Selected code, source checked for the selected effective period

Commonly confused codes

official source

Not listed for this effective period.

Code details and official notes

F03.B18

Unspecified dementia, moderate, with other behavioral disturbance

Open the shareable code page for F03.B18→
billableHCC mapped

Includes

official source
  • Unspecified dementia, moderate, with behavioral disturbances such as sleep disturbance, social disinhibition, or sexual disinhibition

Excludes 1

official source

No Excludes 1 note is listed in this source payload.

Excludes 2

official source

No Excludes 2 note is listed in this source payload.

Code First

official source

Not listed for this effective period.

Use Additional

official source
  • code, if applicable, to identify wandering in unspecified dementia (Z91.83)

Code Also

official source

Not listed for this effective period.

7th character

official source

Not listed for this code in the selected Tabular payload.

Placeholder X

official source

Not listed for this code in the selected Tabular payload.

Laterality

official source

No laterality instruction is listed for this code in the selected Tabular payload.

Effective period

source required
  • FY2026 Apr update
  • Source year 2026
  • Updated 2026-04-01
  • HCC Buddy public API
HCC Buddy Insights

HCC Mapping

HCC 126 Dementia, Moderate (V28)HCC 51 Dementia With Complications (V24)HCC 112 Dementia and Other Specified Brain Disorders (RxHCC)HCC 51 Dementia With Complications (ESRD/PACE)HHS-HCC source required or member context needed for selected effective period (HHS-HCC)

RAF Value

V28: RAF: 0.341V24: RAF: 0.346RxHCC: RAF: Not separately weightedESRD/PACE: RAF: 0.042HHS-HCC RAF source required

Model Period

FY2026 Apr update

Source

source required

Audit Caution

Close codes need documentation support before selection. Do not assume relationships.
Reviewed by the HCC Buddy Coding Team

HCC Buddy workflow band

HCC mapping, RAF, MEAT, source trail, and audit caution stay in view.

MEAT supportaudit cautionsource required

V28

HCC 126

Dementia, Moderate

RAF: 0.341

V24

HCC 51

Dementia With Complications

RAF: 0.346

RxHCC

RxHCC 112

Dementia and Other Specified Brain Disorders

RAF: Not separately weighted

ESRD/PACE

HCC 51

Dementia With Complications

RAF: 0.042

HHS-HCC

source required

HHS-HCC source required or member context needed for selected effective period

RAF: source required

MEAT checklist

Reviewed by the HCC Buddy Coding Team

Monitor, Evaluate, Assess, or Treat must be supported in the provider note.

HCC Buddy guidance, not official ICD-10-CM text.

Audit caution

Reviewed by the HCC Buddy Coding Team

Close codes need documentation support before selection. Do not assume relationships.

HCC Buddy guidance, not official ICD-10-CM text.

Reviewer sign-off

Reviewed by the HCC Buddy Coding Team

MEAT, documentation support, audit cautions, and close-code guidance are reviewed and approved for this effective period.

HCC Buddy enrichment is separate from official source text.

Last updated: April 1, 2026 · Not a substitute for official coding guidelines. No PHI or patient data.
HCC Buddy Code Card
FY 2026 Apr update
F03.B18Billable

Unspecified dementia, moderate, with other behavioral disturbance

CMS-HCC V28

HCC 126

RAF 0.341

CMS-HCC V24

HCC 51

RAF 0.346

RxHCC

RxHCC 112

RAF Not separately weighted

Reviewed by the HCC Buddy Coding TeamFY2026 Apr update

Code

F03.B18

V28 HCC

HCC 126

RAF

0.341

Compare tray

Add close codes to compare documentation differences.