ICD-10-CM F42.2
ICD-10 Code F42.2: Obsessive-compulsive disorder (mixed obsessional thoughts and acts)
F42.2 is the ICD-10-CM code for mixed obsessional thoughts and acts. DSM-5-TR uses F42.2 for obsessive-compulsive disorder, so it is the code most clinicians report for OCD.
- Official description
- Mixed obsessional thoughts and acts
- Billable
- Yes
- Parent category
- F42 · Obsessive-compulsive disorder
- DSM-5-TR name
- Obsessive-compulsive disorder
Verified against the FY2027 ICD-10-CM code set (CDC/NCHS and CMS), effective October 1, 2026 - September 30, 2027, on . Chapter 5: Mental, Behavioral and Neurodevelopmental disorders (F01-F99).
Coding notes for F42.2
- DSM-5-TR obsessive-compulsive disorder codes to F42.2
- Hoarding disorder (F42.3) and excoriation disorder (F42.4) have their own codes
- Document the obsessions, compulsions, and the time they take each day
What to document for medical necessity
Payers look for a record that supports the diagnosis and the level of care. For anxiety and obsessive-compulsive disorders that usually means:
- The specific symptoms, triggers, and how long they have been present
- A scored measure where one fits, such as the GAD-7 or a panic or OCD severity scale
- Avoidance, safety behaviors, or rituals and the time they take
- Functional impairment the anxiety causes
- Treatment plan goals tied to measurable change in those symptoms
CPT codes often billed with F42.2
The ICD-10 code says why you are treating the client and the CPT code says what you did. These are the service codes most often paired with F42.2:
Free templates for this diagnosis
Related ICD-10 codes
Frequently asked questions
What is the ICD-10 code for OCD?
DSM-5-TR maps obsessive-compulsive disorder to F42.2 (Mixed obsessional thoughts and acts). F42.9 is obsessive-compulsive disorder, unspecified.
Why is the F42.2 description not “obsessive-compulsive disorder”?
The ICD-10-CM descriptor is “Mixed obsessional thoughts and acts”. The parent category F42 is titled Obsessive-compulsive disorder, and DSM-5-TR crosswalks the disorder to F42.2.
This page is a coding reference, not clinical, diagnostic, billing, or legal advice. The diagnosis is the treating clinician's call, and payer rules vary - always confirm against the current ICD-10-CM code set and official guidelines and your payer's policy. See the full mental health ICD-10 code list.