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    OpenPayerBilling CodesAnxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disordersICD-10-CM f42-obsessive-compulsive-disorder
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    ICD-10-CM Code For Obsessive-Compulsive Disorder: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group F42 includes obsessive-compulsive disorder and related presentations such as predominately obsessional thoughts, compulsive rituals, and mixed obsessive-compulsive symptoms. These ICD-10-CM diagnosis codes are used to document the presence and clinical features of obsessive-compulsive disorder, capturing severity and symptom predominance relevant to mental health care. Accurate coding within the ICD-10-CM F42 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM F42: Obsessive-compulsive disorder Overview

    The diagnoses in this group represent obsessive-compulsive disorder and related presentations characterized by recurrent intrusive thoughts and repetitive behaviors that cause distress or interfere with functioning. These conditions target mental and behavioral health rather than a specific organ system. Accurate coding matters for appropriate clinical documentation and supports correct claim processing and reimbursement.

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    When to Use

    Use a code from this group when a clinician documents obsessive-compulsive disorder or specifies a subtype based on predominant symptoms. Codes are selected to reflect the documented symptom pattern, severity, and any specified complications or associated psychiatric conditions.

    ICD-10-CM Codes

    5 rows

    ICD-10-CM CodeDescription
    F42.2Mixed obsessional thoughts and acts
    F42.3Hoarding disorder
    F42.4Excoriation (skin-picking) disorder
    F42.8Other obsessive-compulsive disorder
    F42.9Obsessive-compulsive disorder, unspecified

    DRG Codes

    1 rows

    DRG CodeDescription
    882Neuroses Except Depressive

    Typical Clinical Scenarios

    • A 28-year-old woman presents to primary care reporting a long history of intrusive, unwanted thoughts about harming others and spends several hours daily performing checking rituals (re-reading emails, re-checking locks) that interfere with work and relationships. Symptoms have been present for years, cause marked distress, and the patient has insight that the thoughts are excessive but cannot resist the compulsions; treatment planning and referral to behavioral therapy are sought. Diagnosis from this group is assigned for persistent obsessive thoughts with time-consuming compulsive behaviors consistent with obsessive-compulsive disorder. Typical codes: F42.2, F42.9.
    • A 14-year-old adolescent is brought to urgent behavioral health evaluation after a sudden worsening of contamination fears and handwashing rituals following a recent stressful transition to a new school; the escalation has led to dehydration and missed school for several days. The visit addresses acute functional deterioration and need for rapid risk assessment and initiation of short-term interventions; a code in this group is used because of the acute exacerbation of obsessive-compulsive symptoms with impairment. Typical codes: F42.3, F42.9.
    • A 45-year-old patient with chronic obsessive-compulsive symptoms presents with comorbid major depressive disorder and reports pervasive obsessions about symmetry that lead to prolonged ordering rituals; the clinician documents the primary OCD symptoms, evaluates contribution to depressive symptoms, and coordinates combined pharmacologic and psychotherapeutic management. A code from this group is assigned to capture the ongoing obsessive-compulsive disorder as a comorbid psychiatric condition influencing treatment and outcomes. Typical codes: F42.4, F42.8.

    Related Codes

    F40-PHOBIC-ANXIETY-DISORDERS

    ICD-10-CM Code For Phobic Anxiety Disorders: Group Overview

    F41-OTHER-ANXIETY-DISORDERS

    ICD-10-CM Code For Other Anxiety Disorders: Group Overview

    F43-REACTION-TO-SEVERE-STRESS

    ICD-10-CM Code For Reaction To Severe Stress And Adjustment Disorders: Group Overview

    F44-DISSOCIATIVE-AND-CONVERSION-DISORDERS

    ICD-10-CM Code For Dissociative And Conversion Disorders: Group Overview

    F45-SOMATOFORM-DISORDERS

    ICD-10-CM Code For Somatoform Disorders: Group Overview

    F48-OTHER-NONPSYCHOTIC-MENTAL-DISORDERS

    ICD-10-CM Code For Other Nonpsychotic Mental Disorders: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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