ICD-10 Code F60.3 – Borderline personality disorder (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F60.3 – Borderline personality disorder
What it is
F60.3 identifies borderline personality disorder, a long-term mental health condition marked by unstable emotions, self-image, and relationships. Use it when the documentation clearly names this diagnosis.
Clinical signs
Typical features include intense fear of abandonment, impulsive behavior, rapidly shifting mood, and unstable interpersonal relationships. Clinical features vary; refer to documentation.
When to use this code
Use F60.3 when the clinician documents borderline personality disorder, borderline personality traits, or a confirmed diagnosis of this disorder. Apply it for outpatient, inpatient, or consult notes when the diagnosis is established. If the record only suggests emotional instability without a diagnosis, check documentation.
Do not use for
Do not use this code for mood disorders, anxiety disorders, or a personality change due to another medical condition. If the note is nonspecific or uses a different personality disorder diagnosis, check documentation.
Coding tip
Code only when the provider documents borderline personality disorder explicitly or clearly confirms it in the assessment.