ICD-10 Code F41.9 – Anxiety disorder, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F41.9 – Anxiety disorder, unspecified
What it is
F41.9 identifies an anxiety disorder when the record confirms anxiety but does not specify a subtype. Use it for documented anxiety symptoms or disorder diagnoses that are not further classified.
Clinical signs
Typical features include excessive worry, nervousness, restlessness, or tension. Clinical features vary; refer to documentation, and code only when the provider documents an anxiety disorder.
When to use this code
Use F41.9 when the clinician diagnoses anxiety disorder but does not name generalized anxiety, panic disorder, or another specific category. It also fits when the note says anxiety NOS or unspecified anxiety. If the documentation supports a more specific diagnosis, code that instead.
Do not use for
Do not use this code for normal stress, transient worry, or symptoms without a documented disorder. Do not substitute it when the record clearly identifies a specific anxiety disorder; check documentation.
Coding tip
Query the provider if the chart says only “anxiety” and the type is unclear.