What is ICD-10 code F41.1?

F41.1 is the ICD-10-CM diagnosis code for Generalized anxiety disorder. Generalized anxiety disorder is a condition where a person experiences persistent, excessive worry about various aspects of daily life for at least six months. It belongs to the ICD-10-CM chapter for mental, behavioral and neurodevelopmental disorders (f01-f99). F41.1 is a billable code, meaning it can be reported on a claim as a primary or secondary diagnosis when supported by documentation. F41.1 is part of the FY2026 ICD-10-CM code set published by the CMS National Center for Health Statistics and used on Medicare, Medicaid, and commercial claims in the United States.

Yes. F41.1 is a billable ICD-10-CM code that can be reported on professional and institutional claims as a primary or secondary diagnosis when the provider documentation supports the specific condition described. Billable codes in ICD-10-CM are coded to the highest level of specificity available for the documented diagnosis. F41.1 is current for fiscal year 2026 and remains in the active CMS ICD-10-CM code set published by the National Center for Health Statistics.

What is the V28 vs V24 difference for F41.1?

F41.1 does not map to a payment HCC under either the CMS-HCC V28 risk adjustment model or the older V24 model. V28 reached 100% phase-in for payment year 2026, replacing V24 which was used during the PY2024–PY2025 transition. Because neither model rewards F41.1 with a risk adjustment factor, it contributes zero to a Medicare Advantage beneficiary's RAF score in either version. Coders should check whether provider documentation supports a more specific child code that does map to a payment HCC.

What should coders know when reporting F41.1?

Ensure documentation specifies the duration of anxiety symptoms (minimum 6 months required) Note whether the anxiety is affecting work, social, or personal functioning

F41.1 ICD-10 Code: Generalized anxiety disorder

ICD-10-CM Code View

HCC Buddy Code Card

Digital ICD-10 code-book layout with official code detail, always-visible risk models, Code Trumping, and Buddy coding guidance.

Code lookupF41.1Effective periodFY2026 Apr Update (Apr 1-Sep 30)

FY 2026 Apr update / Mental, Behavioral and Neurodevelopmental disorders (F01-F99) / Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders (F40-F48)

F41.1

Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidance

Generalized anxiety disorder

Generalized anxiety disorder is a condition where a person experiences persistent, excessive worry about various aspects of daily life for at least six months.

Buddy Insight

Generalized anxiety disorder (GAD) is characterized by excessive, persistent worry about multiple aspects of life that is difficult to control, lasting at least 6 months.

CMS-HCC V28

Not risk-adjusted for this model/period.

RAF 0

CMS-HCC V24

Not risk-adjusted for this model/period.

RAF 0

ACA/HHS

Not risk-adjusted for this model/period.

RAF 0

ESRD/PACE

Not risk-adjusted for this model/period.

RAF 0

RXHCC

Mapped

HCC 133

Personality Disorders, Anxiet...

RAF 0.0

Code Trumping

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Code Book Path

Official

F41Other anxiety disorders

F41.1Generalized anxiety disorder

Inclusion Terms

Official

Anxiety neurosis
Anxiety reaction
Anxiety state
Overanxious disorder

Excludes 2

Official

neurasthenia (F48.8)

Related Child Codes

Official

F41.0Panic disorder [episodic paroxysmal anxiety]

F41.3Other mixed anxiety disorders

F41.8Other specified anxiety disorders

F41.9Anxiety disorder, unspecified

Includes

Official

ICD-10-CM does not list Includes notes for F41.1 in this effective period.

Excludes 1

Official

ICD-10-CM does not list Excludes 1 notes for F41.1 in this effective period.

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for F41.1 in this effective period.

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for F41.1 in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for F41.1 in this effective period.

Buddy Documentation Tip

HCC Buddy guidance

Excessive anxiety and worry about multiple events or activities for at least 6 months

Difficulty controlling the worry

At least three associated symptoms: restlessness, fatigue, difficulty concentrating, irritability, muscle tension, sleep disturbance

Functional impairment in social, occupational, or other areas

MEAT Support

HCC Buddy guidance

Excessive anxiety and worry about multiple events or activities for at least 6 months

Difficulty controlling the worry

At least three associated symptoms: restlessness, fatigue, difficulty concentrating, irritability, muscle tension, sleep disturbance

Functional impairment in social, occupational, or other areas

Audit Caution

HCC Buddy guidance

Coding GAD when the anxiety is better explained by adjustment disorder with an identifiable stressor

Using F41.1 for normal worry or stress that does not meet clinical criteria for GAD

Failing to distinguish GAD from the anxious component of a depressive episode

Not documenting the 6-month duration requirement for GAD diagnosis

Common Mistakes

HCC Buddy guidance

F41.0 (Panic disorder) — Panic disorder involves discrete panic attacks; GAD involves chronic pervasive worry

F40.10 (Social phobia, unspecified) — Social phobia is situation-specific; GAD involves worry across multiple domains

F32.1 (Major depressive disorder, single episode, moderate) — Depression and GAD frequently co-occur but are distinct diagnoses; both may be coded if both are documented

F43.22 (Adjustment disorder with anxiety) — Adjustment disorder is reactive to an identifiable stressor and time-limited; GAD is chronic

Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.

Is F41.1 an HCC code?

No. F41.1 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.

HCC Category Mapping

RxHCCHCC 133, Personality Disorders, Anxiety, and Other Specified Mental Disorders

0.000

RAF weights shown are the community, non-dual, aged base weights from the CMS risk adjustment model file. Actual per-patient RAF contribution depends on member segment, interactions, and the model year used by the payer. V28 is the CMS-HCC model phased in over payment years 2024–2026; V24 remains in use during the transition and for historical data.

MEAT Criteria for F41.1

For F41.1to count as a valid HCC diagnosis in a given encounter, the provider's documentation must show MEAT: Monitor, Evaluate, Assess, or Treat. A diagnosis from a prior year does not carry forward automatically, it has to be re-documented and supported each calendar year.

MMonitor: signs, symptoms, disease progression, or lab trending documented in the note
EEvaluate: test results, medication response, or physical findings reviewed by the provider
AAssess: explicit mention in the assessment or plan with acknowledgment of status
TTreat: medication, referral, procedure, therapy, or counseling tied to the diagnosis

Only one of M/E/A/T is required to support the code, but the documentation must be specific enough to show that the provider actually addressed F41.1 during that encounter, not just copy-forwarded from a problem list.

What This Code Means

F41.1 is the ICD-10-CM diagnosis code for generalized anxiety disorder. Generalized anxiety disorder is a condition where a person experiences persistent, excessive worry about various aspects of daily life for at least six months. F41.1 sits in the ICD-10-CM chapter for mental, behavioral and neurodevelopmental disorders (f01-f99), within the section covering anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders (f40-f48).

F41.1 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.

F41.1 does not map to any HCC under V24 or V28 and has no RAF weight. No ESRD mapping. RxHCC maps to RxHCC 133 at 0.0 weight. Non-risk-adjusting diagnosis. Coders reviewing F41.1 should check whether additional documentation would support a more specific child code in the same hierarchy that does map to a payment HCC, capturing the correct specificity is the highest-impact RAF improvement available within accurate coding.

HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for F41.1 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

•Ensure documentation specifies the duration of anxiety symptoms (minimum 6 months required)
•Note whether the anxiety is affecting work, social, or personal functioning

Clinical Significance

Generalized anxiety disorder (GAD) is characterized by excessive, persistent worry about multiple aspects of life that is difficult to control, lasting at least 6 months. It is associated with physical symptoms including muscle tension, sleep disturbance, and fatigue. GAD frequently co-occurs with depression and other anxiety disorders. It does not map to any HCC and is not risk-adjusting.

Documentation Requirements

✓Excessive anxiety and worry about multiple events or activities for at least 6 months
✓Difficulty controlling the worry
✓At least three associated symptoms: restlessness, fatigue, difficulty concentrating, irritability, muscle tension, sleep disturbance
✓Functional impairment in social, occupational, or other areas
✓Anxiety not better explained by another mental disorder or medical condition
✓Current treatment plan including therapy and/or medications

Excludes 2, Not included here, may code separately

neurasthenia (F48.8)

Commonly Confused Codes

•F41.0 (Panic disorder) — Panic disorder involves discrete panic attacks; GAD involves chronic pervasive worry
•F40.10 (Social phobia, unspecified) — Social phobia is situation-specific; GAD involves worry across multiple domains
•F32.1 (Major depressive disorder, single episode, moderate) — Depression and GAD frequently co-occur but are distinct diagnoses; both may be coded if both are documented
•F43.22 (Adjustment disorder with anxiety) — Adjustment disorder is reactive to an identifiable stressor and time-limited; GAD is chronic