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ICD-10-CM 2027 diagnosis code

F01.B3Vascular dementia, moderate, with mood disturbance

✓ Billable / specificCC — complication/comorbidityAdult · age 15–124

F01.B3 is a valid, billable ICD-10-CM code for vascular dementia, moderate, with mood disturbance. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Code last changed in FY2023 (effective October 1, 2022). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About F01.B3

F01.B3 is the ICD-10-CM diagnosis code for vascular dementia, moderate, with mood disturbance. It belongs to category F01 (vascular dementia), block F01-F09 (mental disorders due to known physiological conditions) and chapter 5 (mental, Behavioral and Neurodevelopmental disorders). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within F01.B (vascular dementia, moderate), F01.B3 is specifically for vascular dementia, moderate, with mood disturbance. Related codes cover without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety (F01.B0), with behavioral disturbance (F01.B1), with psychotic disturbance (F01.B2) and with anxiety (F01.B4).

Code first: , if applicable, any causal condition.

As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.

In MS-DRG v44.0, it is part of the grouping logic for DRG 884 (Organic Disturbances and Intellectual Disability, relative weight 1.6001), in MDC 19 (Mental Diseases and Disorders), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

The Medicare Code Editor expects this diagnosis only for patients age 15 through 124.

It was added in FY2023, effective October 1, 2022.

Coding notes

Applicable toConditions and synonyms classified to this code
  • Major neurocognitive disorder due to vascular disease, moderate, with mood disturbance such as depression, apathy, or anhedonia
  • Vascular dementia, moderate, with mood disturbance such as depression, apathy, or anhedonia

Notes that apply from higher levels

Instructions written at a parent level also apply to F01.B3.

› From F01 Vascular dementia
Includes
  • arteriosclerotic dementia
  • major neurocognitive disorder due to vascular disease
  • multi-infarct dementia
Code first
  • , if applicable, any causal condition

Broader instructions also apply from F01-F09 Mental disorders due to known physiological conditions and Chapter 5: Mental, Behavioral and Neurodevelopmental disorders.

Alphabetic index entries

1 entries

Terms in the official ICD-10-CM index that lead to F01.B3.

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2023 (effective 10/1/2022): Added
  • No changes since FY2023.

Common questions about F01.B3

Is F01.B3 billable?

Yes. F01.B3 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can F01.B3 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict F01.B3 as a principal diagnosis.

Is F01.B3 a CC or MCC?

F01.B3 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.

What DRG does F01.B3 group to?

F01.B3 is used in the MS-DRG v44.0 logic for MS-DRG 884 (Organic Disturbances and Intellectual Disability). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.