Quick reference
- When to use
- Use F42.9 when the client presents with obsessions, compulsions, or related symptoms consistent with Obsessive-Compulsive Disorder, Unspecified that are time-consuming (>1 hour/day) or cause significant distress or impairment. Specify insight level.
- Duration
- No minimum duration specified in DSM-5, but symptoms should be persistent and not transient. Track severity with Y-BOCS at baseline and every 4-6 sessions. Document insight level (good/fair, poor, absent).
- Session codes
- Pair with CPT 90837 (60-min, preferred for ERP sessions). 90834 for maintenance. 90791 for initial evaluation. 96127 for Y-BOCS screening. Intensive programs may use 90837 multiple times per week.
- Key indicators
- Intrusive, unwanted thoughts (obsessions) • Repetitive behaviors or mental acts (compulsions) • Time-consuming rituals • Distress when unable to perform rituals • Insight varies • Significant functional impact
What F42.9 represents
Used when OCD is present but the specific presentation hasn't been fully characterized.
Key diagnostic criteria
OCD symptoms present but specific type not yet determined.
Documentation essentials
Document observed OCD symptoms. Plan for comprehensive assessment.
Differential diagnosis
Same as other OCD codes. Complete assessment should follow.
Treatment planning
Initial ERP and SSRI while completing assessment.
Insurance & billing
Acceptable for initial evaluation. Update to specific code.
Updates & changes
No significant changes expected.
Documentation pitfalls
Update to specific OCD code after thorough assessment.
References
- American Psychiatric Association. (2022). Diagnostic and Statistical Manual of Mental Disorders (5th ed., text rev.).