ICD-10 Code F42.2 – Mixed obsessional thoughts and acts (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F42.2 – Mixed obsessional thoughts and acts
What it is
F42.2 identifies obsessive-compulsive disorder with both intrusive thoughts and repetitive actions. Use it when documentation describes obsessions and compulsions together, rather than one feature alone.
Clinical signs
Patients may report unwanted, recurring thoughts, images, or urges, along with ritualized behaviors or mental acts performed to reduce distress. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly states mixed obsessional thoughts and acts, or OCD with both obsessions and compulsions. It fits psychiatric assessments, problem lists, and encounter notes that support the combined presentation. Check documentation if the note only describes one component.
Do not use for
Do not assign this code for isolated obsessive thoughts without compulsive acts, or for habitual behaviors without an obsessive component. Check documentation when the diagnosis is uncertain or better explained by another disorder.
Coding tip
Code only when the provider documents both obsessions and compulsions; otherwise, verify the exact OCD subtype before selecting F42.2.