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ICD-10 Guide
ICD-10 CodesF42.2

F42.2

Billable

Mixed obsessional thoughts and acts

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

Code Description

ICD-10 F42.2 is a billable code used to indicate a diagnosis of mixed obsessional thoughts and acts.

Key Diagnostic Point:

Mixed obsessional thoughts and acts, classified under obsessive-compulsive disorder (OCD), is characterized by the presence of both obsessional thoughts and compulsive behaviors that are not exclusively linked to a single theme. Patients may experience intrusive thoughts that provoke anxiety, leading them to engage in various compulsive acts in an attempt to alleviate that anxiety. These obsessions can manifest as fears of contamination, harm, or the need for symmetry, while compulsions may include repetitive cleaning, checking, or counting behaviors. The mixed nature of this condition complicates the clinical picture, as patients may not fit neatly into the categories of pure obsessional or compulsive disorders. This complexity can lead to significant distress and impairment in daily functioning, affecting personal relationships, occupational performance, and overall quality of life. Effective management often requires a combination of cognitive-behavioral therapy (CBT), exposure and response prevention (ERP), and pharmacotherapy, typically involving selective serotonin reuptake inhibitors (SSRIs). Understanding the nuances of this disorder is crucial for accurate diagnosis and treatment planning.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Variety of symptoms that can overlap with other anxiety disorders.
  • Need for comprehensive documentation to support the diagnosis.
  • Potential for co-morbid conditions that complicate coding.
  • Variability in patient presentation and treatment response.

Audit Risk Factors

  • Inadequate documentation of symptoms and treatment.
  • Failure to specify the mixed nature of symptoms.
  • Misclassification of the disorder as a different anxiety disorder.
  • Lack of evidence for co-morbid conditions.

Specialty Focus

Medical Specialties

Psychiatry

Documentation Requirements

Detailed patient history, symptom description, treatment plans, and response to therapy.

Common Clinical Scenarios

Patients presenting with anxiety, compulsive behaviors, and significant distress affecting daily life.

Billing Considerations

Consideration of co-morbid anxiety disorders and the impact of treatment on symptoms.

Psychology

Documentation Requirements

Comprehensive psychological assessments, including standardized testing and behavioral observations.

Common Clinical Scenarios

Patients undergoing cognitive-behavioral therapy for OCD symptoms.

Billing Considerations

Focus on behavioral interventions and patient engagement in therapy.

Coding Guidelines

Inclusion Criteria

Use F42.2 When
  • According to ICD
  • 10 guidelines, F42
  • 2 should be used when a patient exhibits both obsessional thoughts and compulsive acts that do not fit neatly into other OCD categories
  • Documentation must clearly reflect the mixed nature of symptoms and their impact on functioning

Exclusion Criteria

Do NOT use F42.2 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

90834CPT Code

Psychotherapy, 45 minutes with patient

Clinical Scenario

Used for outpatient therapy sessions focusing on OCD management.

Documentation Requirements

Session notes detailing patient progress and treatment focus.

Specialty Considerations

Psychiatrists may also include medication management in their notes.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of mixed obsessional thoughts and acts, improving the accuracy of diagnoses and treatment plans. This specificity aids in better understanding and managing the condition.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of mixed obsessional thoughts and acts, improving the accuracy of diagnoses and treatment plans. This specificity aids in better understanding and managing the condition.

Reimbursement & Billing Impact

reimbursement.

Resources

Clinical References

  • •
    American Psychiatric Association - DSM-5

Coding & Billing References

  • •
    American Psychiatric Association - DSM-5

Frequently Asked Questions

What distinguishes F42.2 from other OCD codes?

F42.2 is specifically for cases where patients exhibit both obsessional thoughts and compulsive acts that do not fit into a single theme, making it more complex than other OCD classifications.