What is ICD-10 code F40.10?

F40.10 is the ICD-10-CM diagnosis code for Social phobia, unspecified. It belongs to the ICD-10-CM chapter for mental, behavioral and neurodevelopmental disorders (f01-f99). F40.10 is a billable code, meaning it can be reported on a claim as a primary or secondary diagnosis when supported by documentation. F40.10 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. F40.10 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. F40.10 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 F40.10?

F40.10 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 F40.10 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 F40.10?

Verify documentation specifies social phobia/social anxiety disorder before coding; if specific performance situations (public speaking, eating in public) are documented, consider more specific F40.11 code Ensure this is not generalized anxiety disorder (F41.1) or agoraphobia (F40.0); social phobia is specifically fear of social interaction and evaluation by others

F40.10 ICD-10 Code: Social phobia, unspecified

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 lookupF40.10Effective 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)

F40.10

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

Social phobia, unspecified

Social phobia is an intense, persistent fear of social situations where a person might be judged, embarrassed, or scrutinized by others. This unspecified code is used when the specific type of social anxiety disorder is not documented in detail.

Buddy Insight

Social phobia, unspecified (also known as social anxiety disorder), involves marked fear or anxiety about social situations where the individual is exposed to possible scrutiny by others.

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

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Code Book Path

Official

F40Phobic anxiety disorders

F40.1Social phobias

F40.10Social phobia, unspecified

Inclusion Terms

Official

Anthropophobia
Social anxiety disorder
Social anxiety disorder of childhood
Social neurosis

Excludes 2

Official

ICD-10-CM does not list Excludes 2 notes for F40.10 in this effective period.

Related Child Codes

Official

F40.11Social phobia, generalized

Includes

Official

ICD-10-CM does not list Includes notes for F40.10 in this effective period.

Excludes 1

Official

ICD-10-CM does not list Excludes 1 notes for F40.10 in this effective period.

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for F40.10 in this effective period.

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for F40.10 in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for F40.10 in this effective period.

Buddy Documentation Tip

HCC Buddy guidance

Marked fear or anxiety about one or more social situations involving possible scrutiny

Fear that behavior or anxiety symptoms will be negatively evaluated

Social situations consistently provoke fear or anxiety

Duration of symptoms (typically 6+ months)

MEAT Support

HCC Buddy guidance

Marked fear or anxiety about one or more social situations involving possible scrutiny

Fear that behavior or anxiety symptoms will be negatively evaluated

Social situations consistently provoke fear or anxiety

Duration of symptoms (typically 6+ months)

Audit Caution

HCC Buddy guidance

Using F40.10 when documentation clearly describes generalized social anxiety — use F40.11 for greater specificity

Confusing normal shyness or introversion with clinical social phobia — ensure diagnostic criteria are met

Coding social phobia when the primary issue is agoraphobia with social avoidance

Failing to differentiate social phobia from avoidant personality disorder (F60.6), which is a more pervasive pattern

Common Mistakes

HCC Buddy guidance

F40.11 (Social phobia, generalized) — Use F40.11 when social anxiety occurs across most social situations; F40.10 is used when generalized vs. specific is not documented

F40.00 (Agoraphobia, unspecified) — Agoraphobia involves fear of situations where escape is difficult; social phobia involves fear of social evaluation

F41.1 (Generalized anxiety disorder) — GAD involves excessive worry about many life domains; social phobia is specifically about social situations

F93.0 (Separation anxiety disorder of childhood) — Separation anxiety is about detachment from attachment figures, not social scrutiny

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 F40.10 an HCC code?

No. F40.10 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 F40.10

For F40.10to 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 F40.10 during that encounter, not just copy-forwarded from a problem list.

What This Code Means

F40.10 is the ICD-10-CM diagnosis code for social phobia, unspecified. Social phobia is an intense, persistent fear of social situations where a person might be judged, embarrassed, or scrutinized by others. This unspecified code is used when the specific type of social anxiety disorder is not documented in detail. F40.10 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).

F40.10 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.

F40.10 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 with no impact on Medicare Advantage payment or risk scores.

HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for F40.10 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

•Verify documentation specifies social phobia/social anxiety disorder before coding; if specific performance situations (public speaking, eating in public) are documented, consider more specific F40.11 code
•Ensure this is not generalized anxiety disorder (F41.1) or agoraphobia (F40.0); social phobia is specifically fear of social interaction and evaluation by others

Clinical Significance

Social phobia, unspecified (also known as social anxiety disorder), involves marked fear or anxiety about social situations where the individual is exposed to possible scrutiny by others. This is one of the most common anxiety disorders and can significantly impair occupational and social functioning. It does not map to any HCC and carries no risk adjustment value.

Documentation Requirements

✓Marked fear or anxiety about one or more social situations involving possible scrutiny
✓Fear that behavior or anxiety symptoms will be negatively evaluated
✓Social situations consistently provoke fear or anxiety
✓Duration of symptoms (typically 6+ months)
✓Avoidance behaviors and functional impact on work, social life, and relationships
✓Current treatment plan including therapy and/or medications

Commonly Confused Codes

•F40.11 (Social phobia, generalized) — Use F40.11 when social anxiety occurs across most social situations; F40.10 is used when generalized vs. specific is not documented
•F40.00 (Agoraphobia, unspecified) — Agoraphobia involves fear of situations where escape is difficult; social phobia involves fear of social evaluation
•F41.1 (Generalized anxiety disorder) — GAD involves excessive worry about many life domains; social phobia is specifically about social situations
•F93.0 (Separation anxiety disorder of childhood) — Separation anxiety is about detachment from attachment figures, not social scrutiny

Child Codes

F40.10Social phobia, unspecified

F40.11Social phobia, generalized

Code Hierarchy

└F40Phobic anxiety disorders └F40.1Social phobias └F40.10Social phobia, unspecified

└F40.10Social phobia, unspecified

F40.10 ICD-10-CM Code: Social phobia, unspecified

HCC Buddy Code Card

F40.10

Is F40.10 an HCC code?

HCC Category Mapping

MEAT Criteria for F40.10

What This Code Means

Coding Tips

Clinical Significance

Documentation Requirements

Commonly Confused Codes

Child Codes

Code Hierarchy

Open F40.10 in the Interactive Encoder