ICD-10 Code F41.1 – Generalized anxiety disorder (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F41.1 – Generalized anxiety disorder
What it is
F41.1 identifies generalized anxiety disorder, a condition marked by persistent, excessive worry across multiple areas of life. Use it when the record documents ongoing anxiety that is difficult to control and not limited to a single trigger.
Clinical signs
Common features include restlessness, muscle tension, fatigue, poor concentration, irritability, and sleep disturbance. Clinical features vary; refer to documentation.
When to use this code
Use F41.1 when the clinician documents generalized anxiety disorder or equivalent wording such as chronic, diffuse anxiety with pervasive worry. It fits outpatient, emergency, and follow-up notes when the diagnosis is established and the anxiety is not better described by a specific phobia, panic disorder, or another condition.
Do not use for
Do not use this code for transient stress, normal worry, or anxiety clearly tied to a single event or substance. Check documentation if the record instead supports panic disorder, adjustment disorder, or anxiety due to a medical condition.
Coding tip
Code F41.1 only when the provider clearly documents generalized anxiety disorder; if the note is vague, query or check documentation.