ICD-10 Code F06.1 – Catatonic disorder due to known physiological condition (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F06.1 – Catatonic disorder due to known physiological condition
What it is
Use this code for catatonia caused by an identified medical or neurologic condition. It describes a syndrome of marked psychomotor disturbance, not a primary psychiatric diagnosis.
Clinical signs
Clinical features vary; refer to documentation. Common findings include stupor, mutism, negativism, posturing, rigidity, or repetitive movements, with reduced response to the environment.
When to use this code
Assign F06.1 when the record links catatonic features to a known physiological cause, such as a medical disorder or another specified condition. You should document the underlying condition when available, because this code does not replace it.
Use it when the clinician clearly states catatonia due to a physiological condition and the presentation is not better described as a primary mental disorder. Check documentation if the cause is unclear.
Do not use for
Do not use this code for catatonia without a documented physiological cause, or when the chart identifies a different psychiatric diagnosis. Do not code it as the underlying disease itself.
Coding tip
Code the causative condition first when documented, and use F06.1 only to capture the catatonic syndrome.