What is ICD-10 code F41.0?

F41.0 is the ICD-10-CM diagnosis code for Panic disorder [episodic paroxysmal anxiety]. Panic disorder is a mental health condition characterized by sudden, repeated episodes of intense fear or panic attacks, often accompanied by physical symptoms like rapid heartbeat and sweating. F41.0 is a billable code, meaning it can be reported on a claim as a primary or secondary diagnosis when supported by documentation. F41.0 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. F41.0 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. F41.0 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 F41.0?

F41.0 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 F41.0 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 F41.0?

Document the frequency and severity of panic episodes to support medical necessity Distinguish from other anxiety disorders by confirming the presence of discrete panic attacks rather than generalized worry

F41.0 ICD-10 Code: Panic disorder [episodic

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 lookupF41.0Effective 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)

F41.0

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

Panic disorder [episodic paroxysmal anxiety]

Panic disorder is a mental health condition characterized by sudden, repeated episodes of intense fear or panic attacks, often accompanied by physical symptoms like rapid heartbeat and sweating.

Buddy Insight

Panic disorder (episodic paroxysmal anxiety) is characterized by recurrent unexpected panic attacks with persistent worry about additional attacks or their consequences.

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

F41.0Panic disorder [episodic paroxysmal anxiety]

Inclusion Terms

Official

Panic attack
Panic state

Excludes 2

Official

anxiety in:
acute stress reaction (F43.0)
transient adjustment reaction (F43.2)
neurasthenia (F48.8)
psychophysiologic disorders (F45.-)

Related Child Codes

Official

F41.1Generalized anxiety disorder

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 F41.0 in this effective period.

Excludes 1

Official

panic disorder with agoraphobia (F40.01)

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for F41.0 in this effective period.

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for F41.0 in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for F41.0 in this effective period.

Buddy Documentation Tip

HCC Buddy guidance

Recurrent unexpected panic attacks documented with symptoms (palpitations, sweating, trembling, shortness of breath, chest pain, nausea, dizziness, etc.)

Persistent concern about additional attacks, worry about attack consequences, or behavioral changes related to attacks

Duration of at least 1 month of concern or behavioral change following attacks

Frequency and severity of panic attacks

MEAT Support

HCC Buddy guidance

Recurrent unexpected panic attacks documented with symptoms (palpitations, sweating, trembling, shortness of breath, chest pain, nausea, dizziness, etc.)

Persistent concern about additional attacks, worry about attack consequences, or behavioral changes related to attacks

Duration of at least 1 month of concern or behavioral change following attacks

Frequency and severity of panic attacks

Audit Caution

HCC Buddy guidance

Coding both F41.0 and F40.01 — F40.01 (agoraphobia with panic disorder) includes panic disorder; do not double-code

Coding panic disorder based on a single panic attack — recurrent attacks are required for this diagnosis

Using F41.0 for situational anxiety or expected anxiety responses that do not meet panic attack criteria

Failing to rule out cardiac, endocrine (thyroid), or substance-related causes of panic symptoms before coding F41.0

Common Mistakes

HCC Buddy guidance

F40.01 (Agoraphobia with panic disorder) — Use F40.01 when both agoraphobia and panic disorder are documented; do not code F41.0 separately with F40.01

F41.1 (Generalized anxiety disorder) — GAD involves chronic worry across multiple domains; panic disorder involves discrete panic attacks

R00.2 (Palpitations) — Palpitations as a symptom of panic disorder should not be coded separately; code the underlying panic disorder

I49.9 (Cardiac arrhythmia, unspecified) — Ensure cardiac evaluation has been performed before attributing symptoms to panic disorder

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 F41.0 an HCC code?

No. F41.0 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 F41.0

For F41.0to 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 F41.0 during that encounter, not just copy-forwarded from a problem list.

What This Code Means

F41.0 is the ICD-10-CM diagnosis code for panic disorder [episodic paroxysmal anxiety]. Panic disorder is a mental health condition characterized by sudden, repeated episodes of intense fear or panic attacks, often accompanied by physical symptoms like rapid heartbeat and sweating. F41.0 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).

F41.0 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.

F41.0 does not map to any HCC under V24 or V28 and has no RAF weight. No ESRD HCC mapping. RxHCC maps to RxHCC 133 at 0.0 weight. This is a non-risk-adjusting diagnosis despite its significant clinical resource utilization. Coders reviewing F41.0 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 F41.0 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

•Document the frequency and severity of panic episodes to support medical necessity
•Distinguish from other anxiety disorders by confirming the presence of discrete panic attacks rather than generalized worry

Clinical Significance

Panic disorder (episodic paroxysmal anxiety) is characterized by recurrent unexpected panic attacks with persistent worry about additional attacks or their consequences. It is one of the most common anxiety disorders, affecting approximately 2-3% of the population, and is associated with significant healthcare utilization including emergency department visits. It does not map to any HCC under V24 or V28 but is important for clinical management.

Documentation Requirements

✓Recurrent unexpected panic attacks documented with symptoms (palpitations, sweating, trembling, shortness of breath, chest pain, nausea, dizziness, etc.)
✓Persistent concern about additional attacks, worry about attack consequences, or behavioral changes related to attacks
✓Duration of at least 1 month of concern or behavioral change following attacks
✓Frequency and severity of panic attacks
✓Attacks are not attributable to substances or another medical condition
✓Current treatment plan including cognitive-behavioral therapy and/or pharmacotherapy (SSRIs, benzodiazepines)

Excludes 1, Do NOT code together

panic disorder with agoraphobia (F40.01)

Commonly Confused Codes

•F40.01 (Agoraphobia with panic disorder) — Use F40.01 when both agoraphobia and panic disorder are documented; do not code F41.0 separately with F40.01
•F41.1 (Generalized anxiety disorder) — GAD involves chronic worry across multiple domains; panic disorder involves discrete panic attacks
•R00.2 (Palpitations) — Palpitations as a symptom of panic disorder should not be coded separately; code the underlying panic disorder
•I49.9 (Cardiac arrhythmia, unspecified) — Ensure cardiac evaluation has been performed before attributing symptoms to panic disorder