ICD-9 Diagnosis Code 309.21

Separation anxiety

Diagnosis Code 309.21

ICD-9: 309.21
Short Description: Separation anxiety
Long Description: Separation anxiety disorder
This is the 2014 version of the ICD-9-CM diagnosis code 309.21

Code Classification
  • Mental disorders (290–319)
    • Neurotic disorders, personality disorders, and other nonpsychotic mental disorders (300-316)
      • 309 Adjustment reaction

Information for Medical Professionals

Information for Patients


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.

NIH: National Institute of Mental Health

  • Generalized anxiety disorder
  • Generalized Anxiety Disorder (GAD): When Worry Gets Out of Control - NIH - Easy-to-Read (National Institute of Mental Health)
  • Generalized anxiety disorder -- self-care
  • Palliative care - fear and anxiety
  • Separation anxiety
  • Stress and anxiety

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