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MPi 408

AOT User Guide

Washington · Washington State Courts · Effective January 1, 2023

This guide explains the Petition for Assisted Outpatient Treatment (AOT), which asks the court to order a person to receive outpatient treatment for a behavioral health disorder. It details who can file the petition and what documents are needed for the court process.

Open the official PDFfrom Washington State Courts

Where this fits in a case

Motions

Stage: Motions

This guide is used when a professional needs to file a petition asking the court to order assisted outpatient treatment for an adult or adolescent.

Either party may file.

Common questions

Who can file this petition?
Only a person acting in a professional role, such as a hospital director, a treating mental health professional, or an emergency room physician, can file this petition.
What is a behavioral health disorder?
It means either a mental disorder, a substance use disorder, or both occurring together.

Revision history

No changes recorded since we started tracking this form on October 9, 2026. The current version took effect January 1, 2023.

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