1. ICD-10-CM Codes
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2. F01-F99 Mental, Behavioral and Neurodevelopmental disorders
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3. F40-F48 Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders
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4. F41- Other anxiety disorders
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2019 ICD-10-CM Diagnosis Code F41.1

Generalized anxiety disorder

2016 2017 2018 2019 Billable/Specific Code

• F41.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
• The 2019 edition of ICD-10-CM F41.1 became effective on October 1, 2018.
• This is the American ICD-10-CM version of F41.1 - other international versions of ICD-10 F41.1 may differ.

• Anxiety disorder, generalized
• Generalised anxiety disorder
• Overanxious disorder
• Overanxious disorder of childhood

• A condition marked by excessive worry and feelings of fear, dread, and uneasiness that last six months or longer. Other symptoms of gad include being restless, being tired or irritable, muscle tension, not being able to concentrate or sleep well, shortness of breath, fast heartbeat, sweating, and dizziness.
• An anxiety disorder characterized by excessive and difficult-to-control worry about a number of life situations. The worry is accompanied by restlessness, fatigue, inability to concentrate, irritability, muscle tension, and/or sleep disturbance and lasts for at least 6 months.
• An anxiety disorder characterized by free-floating, persistent, and excessive worry for at least six months.
• Apprehension of danger and dread accompanied by restlessness, tension, tachycardia, and dyspnea unattached to a clearly identifiable stimulus.
• Apprehension or fear of impending actual or imagined danger, vulnerability, or uncertainty.
• Fear and anxiety are part of life. You may feel anxious before you take a test or walk down a dark street. This kind of anxiety is useful - it can make you more alert or careful. It usually ends soon after you are out of the situation that caused it. But for millions of people in the United States, the anxiety does not go away, and gets worse over time. They may have chest pains or nightmares. They may even be afraid to leave home. These people have anxiety disorders. Types include
  • panic disorder
  • obsessive-compulsive disorder
  • post-traumatic stress disorder
  • phobias
  • generalized anxiety disorder
  treatment can involve medicines, therapy or both.
• Feeling of distress or apprehension whose source is unknown
• Feeling or emotion of dread, apprehension, and impending disaster but not disabling as with anxiety disorders.
• Feelings of fear, dread, and uneasiness that may occur as a reaction to stress. A person with anxiety may sweat, feel restless and tense, and have a rapid heart beat. Extreme anxiety that happens often over time may be a sign of an anxiety disorder.
• Term was discontinued in 1997. In 2000, the term was removed from all records containing it, and replaced with anxiety disorders, its postable counterpart.
• Unpleasant, but not necessarily pathological, emotional state resulting from an unfounded or irrational perception of danger; compare with fear and clinical anxiety.
• Vague uneasy feeling of discomfort or dread accompanied by an autonomic response (the source often nonspecific or unknown to the individual); a feeling of apprehension caused by anticipation of danger. It is an alerting signal that warns of impending danger and enables the individual to take measures to deal with threat.

• 880 Acute adjustment reaction and psychosocial dysfunction

Convert F41.1 to ICD-9-CM

• 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
• 2017 (effective 10/1/2016): No change
• 2018 (effective 10/1/2017): No change
• 2019 (effective 10/1/2018): No change

• Anxiety F41.9
  ICD-10-CM Diagnosis Code F41.9

  Anxiety disorder, unspecified

  2016 2017 2018 2019 Billable/Specific Code

  Applicable To

  • Anxiety NOS
  • generalized F41.1
  • neurosis F41.1
  • reaction F41.1
  • state F41.1
• Apprehension state F41.1
• Disorder (of) - see also Disease
  • anxiety F41.9
    ICD-10-CM Diagnosis Code F41.9

    Anxiety disorder, unspecified

    2016 2017 2018 2019 Billable/Specific Code

    Applicable To

    • Anxiety NOS
    • generalized F41.1
  • overanxious F41.1
• Neurosis, neurotic F48.9
  ICD-10-CM Diagnosis Code F48.9

  Nonpsychotic mental disorder, unspecified

  2016 2017 2018 2019 Billable/Specific Code

  Applicable To

  • Neurosis NOS
  • anxiety (state) F41.1
• Psychoneurosis, psychoneurotic - see also Neurosis
  • anxiety F41.1 (state)
• Reaction - see also Disorder
  • anxiety F41.1
• State (of)
  • anxiety F41.1 (neurotic)
  • apprehension F41.1

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.