F41.9 is not a CMS-HCC payment code. MEAT criteria · RAF Calculator · HCC coding software

ICD-10-CM Code View

HCC Buddy Code Card

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Code lookupF41.9

Effective 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)

F41.9

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

Anxiety disorder, unspecified

This code is used when a patient has an anxiety disorder but the specific type cannot be determined or is not documented.

Overview Risk Models Code Book Documentation Audit Notes Edition comparison

CMS-HCC V28

N/A

—

Not risk-adjusted for this model/period.

Not mapped

CMS-HCC V24

Historical

Not used for standard CY2026 Medicare Advantage payment. Select a historical period to review V24.

Not used for CY2026 payment

ACA/HHS

N/A

—

Not risk-adjusted for this model/period.

Not mapped

ESRD/PACE

N/A

—

Not risk-adjusted for this model/period.

Not mapped

RXHCC

N/A

—

Not risk-adjusted for this model/period.

Not mapped

Code Book Path

Official

F41Other anxiety disorders F41.9Anxiety disorder, unspecified

Inclusion Terms

Official

Anxiety NOS

Excludes 2

Official

symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)Inherited from F01-F99, F41
anxiety in:Inherited from F01-F99, F41
acute stress reaction (F43.0)Inherited from F01-F99, F41
transient adjustment reaction (F43.2)Inherited from F01-F99, F41
neurasthenia (F48.8)Inherited from F01-F99, F41
psychophysiologic disorders (F45.-)Inherited from F01-F99, F41
separation anxiety (F93.0)Inherited from F01-F99, F41

Related Codes

Official

F41.0Panic disorder [episodic paroxysmal anxiety]F41.1Generalized anxiety disorder F41.3Other mixed anxiety disorders F41.8Other specified anxiety disorders

Includes

Official

disorders of psychological developmentInherited from F01-F99

Excludes 1

Official

No Excludes 1 notes are included in this display for F41.9. Check the code and parent instructions in the Code Book.

Code First

Official

No Code First sequencing instructions are included in this display for F41.9. Check the code and parent instructions in the Code Book.

Use Additional

Official

No Use Additional Code instructions are included in this display for F41.9. Check the code and parent instructions in the Code Book.

Code Also

Official

No Code Also instructions are included in this display for F41.9. Check the code and parent instructions in the Code Book.

Buddy Documentation Tip

HCC Buddy guidance

Avoid using this code if the specific anxiety disorder type can be identified from documentation

Query the provider for clarification on the type of anxiety disorder when possible

Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →

Is F41.9 an HCC code?

No. F41.9 is a billable ICD-10-CM code with no mapping under the current CMS-HCC V28 community payment model, and none under the ESRD, Part D RxHCC, or HHS-HCC models.

Code: F41.9
Description: Anxiety disorder, unspecified
HCC (V28): No CMS-HCC V28 mapping
RAF reference coefficient: —
Billable: Yes
Payment year: 2026

Coder workflow notes

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What This Code Means

F41.9 is the ICD-10-CM diagnosis code for anxiety disorder, unspecified. This code is used when a patient has an anxiety disorder but the specific type cannot be determined or is not documented. F41.9 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).

F41.9 is a billable ICD-10-CM code, but no current CMS-HCC V28 community payment mapping is shown, and none under the ESRD, Part D RxHCC, or HHS-HCC models. Do not assign risk adjustment value from this page when no source-backed mapping is shown; verify the applicable model and payment year.

Avoid using this code if the specific anxiety disorder type can be identified from documentation.

HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for F41.9 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

•Avoid using this code if the specific anxiety disorder type can be identified from documentation
•Query the provider for clarification on the type of anxiety disorder when possible