Is F03.A3 a billable ICD-10-CM code?

Yes. F03.A3 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does F03.A3 sit in the tabular list?

Mental, Behavioral and Neurodevelopmental disorders (F01-F99), in the block Mental disorders due to known physiological conditions (F01-F09).

What cannot be coded together with F03.A3?

F03.A3 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above F03.A3 (F03.A) and apply to it just the same.

F03.A3

F03.A3 — Unspecified dementia, mild, with mood disturbance

Billable / specific codeICD-10-CM

F03.A3 is a billable, specific ICD-10-CM code for unspecified dementia, mild, with mood disturbance. It is valid for submission on a claim.

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Unspecified dementia, mild, with mood disturbance such as depression, apathy, or anhedonia

Excludes1 inherited from the categories above F03.A3

These are not written on F03.A3, but they bind it: a note on a category applies to every code beneath it. Billing F03.A3 with anything listed here is a denial.

Written on F03.A — Unspecified dementia, mild

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

Excludes2 inherited from the categories above F03.A3

Also inherited, and the opposite of Excludes1: these conditions are not part of F03.A3, but a patient can have both, so you may code both.

Written on F03 — Unspecified dementia

dementia with delirium or acute confusional state (F05)
mild memory disturbance due to known physiological condition (F06.8)

Other codes that can never be billed with F03.A3

These codes carry an Excludes1 note pointing at F03.A3. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading F03.A3 alone.

F06Other mental disorders due to known physiological condition
F06.7Mild neurocognitive disorder due to known physiological condition
G30Alzheimer's disease
G31.84Mild cognitive impairment of uncertain or unknown etiology
R54Age-related physical debility

Risk adjustment

F03.A3 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

HCC 127 Dementia, Mild or Unspecified0.341 RAF

Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.

Medicare coverage

F03.A3 is named in 14 Medicare coverage policies — 13 listing it as supporting medical necessity, and 1 listing it as NOT covered. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A52434Health and Behavior Assessment/Intervention – Medical Policy Articlenot covered
A53134Billing and Coding: NCD Coding Article for Positron Emission Tomography (PET) Scans Used for Non-Oncologic Conditions
A54111Billing and Coding: Speech Language Pathology (SLP) Services: Communication Disorders
A56416Billing and Coding: Assays for Vitamins and Metabolic Function

How F03.A3 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to F03.A3.

Dementia›mild›with›mood disturbance(anhedonia) (apathy) (depression)

Code history

F03.A3 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share F03.A. If F03.A3 is not quite right, the correct code is usually one of these.

Questions about F03.A3

Is F03.A3 a billable ICD-10-CM code?: Yes. F03.A3 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does F03.A3 sit in the tabular list?: Mental, Behavioral and Neurodevelopmental disorders (F01-F99), in the block Mental disorders due to known physiological conditions (F01-F09).
What cannot be coded together with F03.A3?: F03.A3 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above F03.A3 (F03.A) and apply to it just the same.