ICD-10 Code F07.0 – Personality change due to known physiological condition (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F07.0 – Personality change due to known physiological condition
What it is
F07.0 identifies a persistent change in personality or behavior caused by an identified medical or neurological condition. Use it when the condition, not a primary psychiatric disorder, is documented as the cause.
Clinical signs
Clinical features vary; refer to documentation. Commonly, records describe altered behavior, emotional lability, disinhibition, apathy, or reduced social judgment linked to a known physiological cause.
When to use this code
Use this code when the clinician documents a personality change attributable to a specific physiological condition, such as a brain disorder or other medical cause. Support the link between the underlying condition and the behavioral change in the note. If the cause is unclear, check documentation.
Do not use for
Do not use F07.0 for a primary personality disorder or for temporary confusion without documented personality change. If the record only states mood symptoms or nonspecific behavioral disturbance, check documentation.
Coding tip
Code the underlying physiological condition first when it is documented as the cause, and assign F07.0 only when the personality change is clearly stated.