F41.9
Anxiety disorder, unspecified
Mental, behavioral and neurodevelopmental disorders Billable
Quick Reference
Excessive worry, nervousness, or anxiety without specification of type (GAD, panic, social anxiety)
Clinical Information
When to Use This Code
Excessive worry, nervousness, or anxiety without specification of type (GAD, panic, social anxiety)
Common Clinical Scenarios
- New anxiety diagnosis
- Anxiety symptoms without meeting specific disorder criteria
- SSRI/SNRI prescription for anxiety
- Anxiety counseling and therapy
Documentation Requirements
- Document specific anxiety symptoms (worry, restlessness, tension)
- Use validated screening tools (GAD-7, PHQ-4)
- Record functional impairment
- Specify type when criteria met (GAD F41.1, panic F41.0, social F40.10)
Coding Guidelines
Inclusion Terms
These terms are included in this code:
Anxiety NOSAnxiety stateNervousness
Exclusion Terms
Do NOT use this code for:
- Generalized anxiety disorder (F41.1)
- Panic disorder (F41.0)
- Social anxiety disorder (F40.10)
- Anxiety due to medical condition (F06.4)
Coding Notes
Use F41.1 when GAD criteria met
Code more specifically when type identified
Consider behavioral health integration codes for treatment
Related ICD-10 Codes
Consider these related codes based on patient presentation:
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Code
F41.9
Category
Mental, behavioral and neurodevelopmental disorders
Billable Status
Billable
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