ICD-10 Code for anxiety

The ICD-10-CM code for anxiety is F41.9 when documented without further specification. Unspecified anxiety is F41.9, but a documented disorder type changes the code - generalized anxiety disorder, panic disorder, and adjustment-related anxiety all code differently.

Which Code Should You Use?

F41.9 — Anxiety disorder, unspecified

Anxiety disorder/state documented without further specification.

F41.1 — Generalized anxiety disorder

Generalized anxiety disorder (GAD) documented.

F41.0 — Panic disorder [episodic paroxysmal anxiety]

Panic disorder without agoraphobia.

F43.23 — Adjustment disorder with mixed anxiety and depressed mood

Adjustment disorder with anxiety (identifiable stressor documented).

F06.4 — Anxiety disorder due to known physiological condition

Anxiety disorder due to a documented physiological condition.

What to Document

  • The specific disorder type when established (GAD vs panic vs adjustment).
  • Any identified stressor (supports adjustment-disorder coding).
  • Comorbid depression (F41.8 anxiety-depression mixed, or separate codes when both disorders stand alone).

Coding Notes

"Anxiety" alone indexes to F41.9. Screening encounters without a diagnosis use Z13.30 (encounter for screening, mental health, unspecified).

References

Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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