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  6. 2025 ICD-10-CM Code F41.9

2025 ICD-10-CM Diagnosis Code F41.9

Anxiety disorder, unspecified

ICD-10-CM Code:
F41.9
ICD-10 Code for:
Anxiety disorder, unspecified
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Chronic
Code Navigator:

F41.9 is a billable diagnosis code used to specify a medical diagnosis of anxiety disorder, unspecified. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2024 through September 30, 2025.

Unspecified diagnosis codes like F41.9 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Code Classification

  • Mental and behavioural disorders
    F01–F99
    • Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders
      F40-F48
      • Other anxiety disorders
        F41

Approximate Synonyms

The following list of clinical terms are approximate synonyms, alternative descriptions, or common phrases that might be used by patients, healthcare providers, or medical coders to describe the same condition. These synonyms and related diagnosis terms are often used when searching for an ICD-10 code, especially when the exact medical terminology is unclear. Whether you're looking for lay terms, similar diagnosis names, or common language alternatives, this list can help guide you to the correct ICD-10 classification.

  • 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 due to dementia
  • Anxiety in pregnancy
  • Anxiety state
  • Anxiety state
  • Chronic anxiety
  • Level of anxiety
  • Level of anxiety
  • Mental disorder in mother complicating childbirth
  • Mental disorders during pregnancy, childbirth and the puerperium
  • Mental disorders during pregnancy, childbirth and the puerperium
  • Moderate anxiety
  • Postpartum anxiety
  • Psychological disorder during pregnancy
  • Recurrent anxiety
  • Reduced level of anxiety

Clinical Classification

Clinical Classifications group individual ICD-10-CM diagnosis codes into broader, clinically meaningful categories. These categories help simplify complex data by organizing related conditions under common clinical themes.

They are especially useful for data analysis, reporting, and clinical decision-making. Even when diagnosis codes differ, similar conditions can be grouped together based on their clinical relevance. Each category is assigned a unique CCSR code that represents a specific clinical concept, often tied to a body system or medical specialty.

Anxiety and fear-related disorders

CCSR Code: MBD005

Inpatient Default: Y - Yes, default inpatient assignment for principal diagnosis or first-listed diagnosis.

Outpatient Default: Y - Yes, default outpatient assignment for principal diagnosis or first-listed diagnosis.

Clinical Information

  • 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.

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Anxiety NOS

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Convert F41.9 to ICD-9-CM

Below are the ICD-9 codes that most closely match this ICD-10 code, based on the General Equivalence Mappings (GEMs). This ICD-10 to ICD-9 crosswalk tool is helpful for coders who need to reference legacy diagnosis codes for audits, historical claims, or approximate code comparisons.

Anxiety state NOS

ICD-9-CM: 300.00

This is a direct match with no additional mapping qualifiers. The absence of a flag generally means the mapping is considered exact or precise. In other words, the ICD-10 code maps cleanly to the ICD-9 code without qualification, approximation, or needing multiple codes.

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Patient Education


Anxiety

What is 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. It can help you to cope. The anxiety may give you a boost of energy or help you focus. But for people with anxiety disorders, the fear is not temporary and can be overwhelming.

What are anxiety disorders?

Anxiety disorders are conditions in which you have anxiety that does not go away and can get worse over time. The symptoms can interfere with daily activities such as job performance, schoolwork, and relationships.

What are the types of anxiety disorders?

There are several types of anxiety disorders, including:

  • Generalized anxiety disorder (GAD). People with GAD worry about ordinary issues such as health, money, work, and family. But their worries are excessive, and they have them almost every day for at least 6 months.
  • Panic disorder. People with panic disorder have panic attacks. These are sudden, repeated periods of intense fear when there is no danger. The attacks come on quickly and can last several minutes or more.
  • Phobias. People with phobias have an intense fear of something that poses little or no actual danger. Their fear may be about spiders, flying, going to crowded places, or being in social situations (known as social anxiety).

What causes anxiety disorders?

The cause of anxiety is unknown. Factors such as genetics, brain biology and chemistry, stress, and your environment may play a role.

Who is at risk for anxiety disorders?

The risk factors for the different types of anxiety disorders can vary. For example, GAD and phobias are more common in women, but social anxiety affects men and women equally. There are some general risk factors for all types of anxiety disorders, including:

  • Certain personality traits, such as being shy or withdrawn when you are in new situations or meeting new people
  • Traumatic events in early childhood or adulthood
  • Family history of anxiety or other mental disorders
  • Some physical health conditions, such as thyroid problems or arrhythmia

What are the symptoms of anxiety disorders?

The different types of anxiety disorders can have different symptoms. But they all have a combination of:

  • Anxious thoughts or beliefs that are hard to control. They make you feel restless and tense and interfere with your daily life. They do not go away and can get worse over time.
  • Physical symptoms, such as a pounding or rapid heartbeat, unexplained aches and pains, dizziness, and shortness of breath
  • Changes in behavior, such as avoiding everyday activities you used to do

Using caffeine, other substances, and certain medicines can make your symptoms worse.

How are anxiety disorders diagnosed?

To diagnose anxiety disorders, your health care provider will ask about your symptoms and medical history. You may also have a physical exam and lab tests to make sure that a different health problem is not the cause of your symptoms.

If you don't have another health problem, you will get a psychological evaluation. Your provider may do it, or you may be referred to a mental health professional to get one.

What are the treatments for anxiety disorders?

The main treatments for anxiety disorders are psychotherapy (talk therapy), medicines, or both:

  • Psychotherapy can help you recognize and change troubling emotions, thoughts, and behaviors. To be effective, it should focus on your specific anxieties and needs. There are many types; some of the types used for anxiety disorders include:
    • Cognitive behavioral therapy (CBT), which teaches you different ways of thinking and behaving. It can help you change how you react to the things that cause you to feel fear and anxiety. It may include exposure therapy. This therapy focuses on having you confront your fears so that you will be able to do the things that you had been avoiding.
    • Acceptance and commitment therapy may help with some anxiety disorders. It uses strategies such as mindfulness and goal setting to reduce discomfort and anxiety.
  • Medicines to treat anxiety disorders include anti-anxiety medicines and certain antidepressants. Some types of medicines may work better for specific types of anxiety disorders. You should work closely with your provider to identify which medicine is best for you. You may need to try more than one medicine before you can find the right one.

Support groups and stress management techniques may also be helpful.

NIH: National Institute of Mental Health


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.

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.