F01.A18 — Vascular dementia, mild, with other behavioral disturbance
Is F01.A18 billable?
Yes — F01.A18 is billable for FY2027. F01.A18 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. F01.A18 may be submitted for encounters from October 1, 2026 through September 30, 2027.
F01.A18 at a glance
| Code | F01.A18 |
|---|---|
| Description | Vascular dementia, mild, with other behavioral disturbance |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does F01.A18 group to?
F01.A18 sits in MDC 19 and helps define the logic of 1 MS-DRG (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 884Organic Disturbances and Intellectual Disabilitymedical
As a secondary diagnosis, F01.A18 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is F01.A18 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to F01.A18. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Dementia › vascular › mild › with › behavioral disturbances (degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety)
- Dementia › vascular › mild › with › behavioral disturbances › specified NEC (degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety)
Use additional code
Report an additional code alongside F01.A18 to fully describe the condition. F01.A18 is sequenced first.
- code, if applicable, to identify wandering in vascular dementia (Z91.83)
Inclusion terms
Alternative wording in documentation that is classified to F01.A18.
- Major neurocognitive disorder due to vascular disease, mild, with behavioral disturbances such as sleep disturbance, social disinhibition, or sexual disinhibition
- Vascular dementia, mild, with behavioral disturbances such as sleep disturbance, social disinhibition, or sexual disinhibition
Excludes1 — never code together — inherited from F01.A
The conditions below can never be reported together with F01.A18 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- mild neurocognitive disorder due to known physiological condition with or without behavioral disturbance (F06.7-)
Code first — inherited from F01
The underlying condition below must be sequenced before F01.A18. F01.A18 describes a manifestation and cannot be the principal or first-listed diagnosis.
- , if applicable, any causal condition
Excludes2 — not included here — inherited from Chapter 5
The conditions below are not part of F01.A18, but a patient may have both at the same time. When documentation supports it, F01.A18 and the excluded code may both be reported.
- symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)
How long has F01.A18 existed?
F01.A18 first appears in FY2023.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.