ICD-10-CM F41.1

ICD-10 Code F41.1: Generalized anxiety disorder

F41.1 is the ICD-10-CM code for generalized anxiety disorder (GAD). It is one of the most common diagnoses in outpatient therapy and is fully billable.

Official description

Generalized anxiety disorder

Billable

Yes

Parent category

F41 · Other anxiety disorders

DSM-5-TR name

Generalized anxiety disorder

Verified against the FY2027 ICD-10-CM code set (CDC/NCHS and CMS), effective October 1, 2026 - September 30, 2027, on Oct 12, 2026. Chapter 5: Mental, Behavioral and Neurodevelopmental disorders (F01-F99).

Coding notes for F41.1

• Use when the clinician diagnoses generalized anxiety disorder
• Anxiety that does not meet criteria for a specific disorder is F41.9
• Panic disorder (F41.0) and social anxiety disorder (F40.10) have their own codes

What to document for medical necessity

Payers look for a record that supports the diagnosis and the level of care. For anxiety and obsessive-compulsive disorders that usually means:

• The specific symptoms, triggers, and how long they have been present
• A scored measure where one fits, such as the GAD-7 or a panic or OCD severity scale
• Avoidance, safety behaviors, or rituals and the time they take
• Functional impairment the anxiety causes
• Treatment plan goals tied to measurable change in those symptoms

CPT codes often billed with F41.1

The ICD-10 code says why you are treating the client and the CPT code says what you did. These are the service codes most often paired with F41.1:

Free templates for this diagnosis

• Anxiety treatment plan
• Exposure fear hierarchy worksheet
• CBT thought record
• Insurance DAP note

Related ICD-10 codes

Frequently asked questions

This page is a coding reference, not clinical, diagnostic, billing, or legal advice. The diagnosis is the treating clinician's call, and payer rules vary - always confirm against the current ICD-10-CM code set and official guidelines and your payer's policy. See the full mental health ICD-10 code list.