ICD-10 Code F69 – Unspecified disorder of adult personality and behavior (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F69 – Unspecified disorder of adult personality and behavior
What it is
F69 is used when an adult has a personality or behavior disorder, but the record does not identify a more specific type. It signals a clinically significant pattern that is not otherwise classified.
Clinical signs
Clinical features vary; refer to documentation. Records may describe longstanding maladaptive personality traits, interpersonal difficulty, or behavior problems, but not enough detail for a specific personality disorder.
When to use this code
Use F69 when the clinician documents an unspecified adult personality or behavior disorder and the note lacks the detail needed for a more specific code. It may also fit when the diagnosis is recorded broadly without subtype clarification. Check documentation if the chart suggests another mental, behavioral, or developmental condition.
Do not use for
Do not use F69 when a specific personality disorder is documented or when the behavior change is better explained by another psychiatric, medical, or substance-related condition. Do not code from suspected traits alone.
Coding tip
Before assigning F69, look for a named personality disorder or clearer clinical description; if absent, code the unspecified diagnosis exactly as documented.