ICD-10 Code F68.8 – Other specified disorders of adult personality and behavior (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F68.8 – Other specified disorders of adult personality and behavior
What it is
F68.8 identifies adult personality or behavior disturbances that do not fit a more specific diagnosis. Use it when the record describes an unusual, persistent pattern and no other code is documented.
Clinical signs
Clinical features vary; refer to documentation. You may see maladaptive personality traits or behavior patterns that affect functioning, but the note should not support a more specific personality disorder.
When to use this code
Use this code when the clinician explicitly documents “other specified” personality or behavior disorder, or describes a qualifying adult pattern without naming a specific disorder. It is appropriate when the record supports a persistent problem in personality or behavior and the provider rules out a better-defined diagnosis. Check documentation if the presentation is vague.
Do not use for
Do not use F68.8 for a clearly specified personality disorder, substance-related behavior change, or transient situational behavior. If the chart supports another mental health diagnosis, code that condition instead.
Coding tip
Code F68.8 only when the provider’s wording supports an “other specified” adult personality or behavior disorder and no more specific code applies.