2026 ICD-10-CM Diagnosis Code F41.9Anxiety disorder, unspecified

ICD-10-CM Codes›F01–F99›F40-F48›F41

ICD-10-CM F41.9
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

F41.9 is a billable ICD-10-CM diagnosis code for anxiety disorder, unspecified. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Anxiety and fear-related disorders.

Code Identity

ICD-10-CM Code
F41.9
Billable Status
Yes — Valid for Submission
Code Describes
Anxiety disorder, unspecified
Short Description
Anxiety disorder, unspecified
Same as the full description in the CMS dataset.
Parent Code
F41
Other anxiety disorders

Code Classification

ChapterF01–F99Mental and behavioural disorders
SectionF40-F48Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders
CategoryF41Other anxiety disorders
This CodeF41.9Anxiety disorder, unspecified

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Anxiety
  • Anxiety about behavior or performance
  • Anxiety about resuming sexual relations
  • Anxiety disorder
  • Anxiety disorder due to severe acute respiratory syndrome coronavirus 2
  • Anxiety disorder in mother complicating childbirth
  • Anxiety disorder in pregnancy
  • Anxiety due to dementia
  • Anxiety in pregnancy
  • Anxiety state
  • Chronic anxiety
  • Level of anxiety
  • Mental disorder in mother complicating childbirth
  • Moderate anxiety
  • Postpartum anxiety
  • Psychological disorder during pregnancy
  • Recurrent anxiety
  • Reduced level of anxiety

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Anxiety NOS

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Anxiety
    • Apprehensiveness, abnormal
    • Disorder(of)
      • anxiety

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR MBD005
Anxiety and fear-related disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Anxiety

    feelings or emotions of dread, apprehension, and impending disaster but not disabling as with anxiety disorders.

  • Anxiety Disorders

    persistent and disabling anxiety.

  • Anxiety, Castration

    anxiety due to fantasized injuries to or loss of the genitals.

  • Anxiety, Separation

    anxiety experienced by an individual upon separation from a person or object of particular significance to the individual.

  • Climate Anxiety

    persistent and difficult to control psychological distress over climate change.

  • Dental Anxiety

    abnormal fear or dread of visiting the dentist for preventive care or therapy and unwarranted anxiety over dental procedures.

  • Generalized Anxiety Disorder

    uncontrolled anxiety or excessive worry that exceeds the realistic scope of life situations and endures for at least a month or longer.

  • Manifest Anxiety Scale

    true-false questionnaire made up of items believed to indicate anxiety, in which the subject answers verbally the statement that describes him.

  • Performance Anxiety

    anxiety related to the execution of a task. (campbell's psychiatric dictionary, 9th ed.)

  • Phobia, Social

    anxiety disorder characterized by the persistent and irrational fear, anxiety, or avoidance of social or performance situations.

  • Test Anxiety

    anxiety related to situations where abilities or knowledge are being tested.

  • Climate Change

    any significant change in measures of climate (such as temperature, precipitation, or wind) lasting for an extended period (decades or longer). it may result from natural factors such as changes in the sun's intensity, natural processes within the climate system such as changes in ocean circulation, or human activities.

Patient EducationClinical

Anxiety

Anxiety is a feeling of fear, dread, and uneasiness. It might cause you to sweat, feel restless and tense, and have a rapid heartbeat. It can be a normal reaction to stress. For example, you might feel anxious when faced with a difficult problem at work, before taking a test, or before making an important decision.

The full article covers:

  • What is anxiety?
  • What are anxiety disorders?
  • What are the types of anxiety disorders?
  • What causes anxiety disorders?
  • Who is at risk for anxiety disorders?
  • What are the symptoms of anxiety disorders?
  • How are anxiety disorders diagnosed?
  • What are the treatments for anxiety disorders?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert F41.9 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
300.00 Anxiety state NOS
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About F41.9Overview

Is F41.9 (Other anxiety disorders) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report anxiety disorder, unspecified on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What is the ICD-9 equivalent of F41.9?

Under the General Equivalence Mappings, anxiety disorder, unspecified converts to ICD-9-CM 300.00 (anxiety state NOS). The mapping is a direct match.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.