ICD-10 Code F07.8 – Other personality and behavioral disorders due to known physiological condition (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F07.8 – Other personality and behavioral disorders due to known physiological condition
What it is
Use this code for personality or behavioral changes caused by a known medical or physiological condition, when the presentation does not fit a more specific F07 diagnosis. It reflects an acquired change rather than a primary psychiatric disorder.
Clinical signs
Clinical features vary; refer to documentation. Commonly, records describe altered behavior, personality change, emotional lability, or impaired judgment linked to an underlying condition.
When to use this code
Use F07.8 when the clinician documents a behavioral or personality disorder due to a known physiological cause and no more specific code applies. Make sure the record identifies the underlying condition or clear causal relationship. If the documentation is vague, check documentation before coding.
Do not use for
Do not use this code for primary mental health disorders, substance-related conditions, or personality disorders without a documented physiological cause. If a more specific F07 category is documented, code that instead.
Coding tip
Confirm the cause-and-effect wording in the note and code the underlying condition first when appropriate.