FY2027 ICD-10-CM reference
F01.B18: Vascular dementia, moderate, with other behavioral disturbance
By the HCC Buddy Coding Team
The official ICD-10-CM descriptor is Vascular dementia, moderate, with other behavioral disturbance. 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.
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
Vascular dementia as a result of infarction of the brain due to vascular disease, including hypertensive cerebrovascular disease.
Source: F01 (category, inherited).
Includes
arteriosclerotic dementia
Source: F01 (category, inherited).
Includes
major neurocognitive disorder due to vascular disease
Source: F01 (category, inherited).
Includes
multi-infarct dementia
Source: F01 (category, inherited).
Code first
, if applicable, any causal condition
Source: F01 (category, inherited).
Instructional note
Major neurocognitive disorder due to vascular disease, moderate, with behavioral disturbances such as sleep disturbance, social disinhibition, or sexual disinhibition
Source: F01.B18 (self, direct).
Instructional note
Vascular dementia, moderate, with behavioral disturbances such as sleep disturbance, social disinhibition, or sexual disinhibition
Source: F01.B18 (self, direct).
Instructional note
code, if applicable, to identify wandering in vascular dementia (Z91.83)
Source: F01.B18 (self, direct).
Compare the FY2027 additions, removals and billable-status changes
What does F01.B18 mean in FY2027?
The official ICD-10-CM descriptor is Vascular dementia, moderate, with other behavioral disturbance. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Is F01.B18 billable in FY2027?
The FY2027 order file marks F01.B18 as billable. Check the complete Tabular instructions and documentation before assigning it.
Does F01.B18 map to an HCC?
In the CMS 2027 Initial ICD-10-CM Mappings (payment year 2027, 2026 dates of service), F01.B18 maps to CMS-HCC V28 HCC 126 (Dementia, Moderate). 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