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ICD-10 Guide
ICD-10 CodesF40.240

F40.240

Billable

Claustrophobia

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 F40.240 is a billable code used to indicate a diagnosis of claustrophobia.

Key Diagnostic Point:

Claustrophobia is characterized by an intense fear of enclosed spaces, leading to significant anxiety and avoidance behaviors. Individuals with this phobia may experience panic attacks when faced with situations such as being in elevators, small rooms, or crowded areas. The fear is often disproportionate to the actual danger posed by these environments. Symptoms can include sweating, rapid heartbeat, trembling, and feelings of impending doom. Claustrophobia can significantly impair daily functioning and quality of life, as individuals may go to great lengths to avoid situations that trigger their anxiety. Treatment options often include cognitive-behavioral therapy (CBT), exposure therapy, and relaxation techniques. In some cases, medication may be prescribed to help manage anxiety symptoms. Understanding the nuances of this condition is crucial for accurate diagnosis and treatment, as well as for proper coding in medical records.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between claustrophobia and other anxiety disorders
  • Documenting the severity and impact on daily life
  • Identifying comorbid conditions such as PTSD or OCD
  • Understanding the patient's history and triggers

Audit Risk Factors

  • Inadequate documentation of symptoms and triggers
  • Failure to note comorbid conditions
  • Lack of treatment plan details
  • Misclassification of the phobia type

Specialty Focus

Medical Specialties

Psychiatry

Documentation Requirements

Comprehensive mental health evaluation, including history of present illness, symptom severity, and treatment response.

Common Clinical Scenarios

Patients presenting with panic attacks in enclosed spaces, avoidance behaviors, and requests for therapy.

Billing Considerations

Ensure to document any comorbid anxiety disorders or PTSD that may influence treatment.

Psychology

Documentation Requirements

Detailed psychological assessments, including standardized anxiety scales and patient self-reports.

Common Clinical Scenarios

Patients undergoing cognitive-behavioral therapy for phobias, particularly claustrophobia.

Billing Considerations

Document the therapeutic techniques used and patient progress over time.

Coding Guidelines

Inclusion Criteria

Use F40.240 When
  • According to ICD
  • 10 guidelines, F40
  • 240 should be used when the primary diagnosis is claustrophobia
  • It is important to document the specific symptoms and their impact on the patient's life

Exclusion Criteria

Do NOT use F40.240 When
  • Exclusion criteria include other specified anxiety disorders that may better describe the patient's condition

Related ICD-10 Codes

Related CPT Codes

90834CPT Code

Psychotherapy, 45 minutes with patient

Clinical Scenario

Used during therapy sessions for patients with claustrophobia.

Documentation Requirements

Document the duration of the session and specific therapeutic techniques used.

Specialty Considerations

Psychiatrists and psychologists should note the patient's progress and response to therapy.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of anxiety disorders, including claustrophobia, which aids in better tracking and treatment outcomes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of anxiety disorders, including claustrophobia, which aids in better tracking and treatment outcomes.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of anxiety disorders, including claustrophobia, which aids in better tracking and treatment outcomes.

Resources

Clinical References

  • •
    American Psychiatric Association - DSM-5

Coding & Billing References

  • •
    American Psychiatric Association - DSM-5

Frequently Asked Questions

What is the difference between claustrophobia and agoraphobia?

Claustrophobia is a specific fear of enclosed spaces, while agoraphobia involves fear of situations where escape might be difficult or help unavailable, often leading to avoidance of public places.