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Medicaid Pre-Auth

For the best experience, please use the Pre-Auth tool in Chrome, Firefox, or Internet Explorer 10 and above. 

DISCLAIMER: Your current browser's security settings does not allow the use of this tool. This tool requires the use of Internet Explorer 10 or Later. If you are currently using Internet Explorer as your browser and you see this message, you should try to update it or use another browser like Google Chrome or Firefox.

All attempts are made to provide the most current information on the Pre-Auth Needed Tool. However, this does NOT guarantee payment. Payment of claims is dependent on eligibility, covered benefits, provider contracts, correct coding and billing practices. For specific details, please refer to the provider manual. If you are uncertain that prior authorization is needed, please submit a request for an accurate response.

Please refer to the Prior Auth Quick Reference Guide (PDF) for questions.


Please check the State Medicaid Guidelines for Covered Benefits. Exclusions and limitations to these benefits can also be found on the Washington State Health Care Authority site. 

Vision Services need to be verified by Envolve Vision.
Dental Services need to be verified by DSHS.
Complex imaging, MRA, MRI, PET, and CT scans need to be verified by NIA.
Behavioral Health/Substance Abuse requests can be submitted using our web portal or by fax, using an OTR form (PDF).

For non-participating providers, Join Our Network.


Are services being performed in the emergency department or urgent care center or are these family planning services billed with a contraceptive management diagnosis?

Types of Services YES NO
Is the member being admitted to an inpatient facility?
Are professional services being rendered in the home? (professional services do not include the delivery of DME, orthotics, prosthetics, or supplies).
Is anesthesia being rendered for pain management or dental surgery?
Are oral surgeon services being rendered in office?