Washington Medicaid E-Claims

In Clearinghouses, click Add.

Washington Medicaid is an E-Claims Direct Carrier.

Other Resources:


Set up as above, then click OK to save.

In the Carriers list, create a carrier for WA State HCA.

Ensure all Washington Medicaid insurance plans use the WA State HCA carrier, and the insurance filing code Medicaid (Insurance Plan).


To send claims:

  1. In the Send Claims window, select the claims for Washington Medicaid. Click the Send E-Claims dropdown and select Washington Medicaid from the list.
  2. In the Windows file explorer, go to C:\Washington Medicaid\. Change the extensions on the newest files from TXT to DAT.
  3. Log into the ProviderOne portal.
    • Find the Batch Claims Submission (837) link.
    • Upload each new DAT file created.
  4. After 15 minutes, the files should register in ProviderOne.
    • Go to the Retrieve HIPAA Batch Responses link. Select 837D from the Transaction Type dropdown menu.
    • Change the first filter to Upload/Sent Date and type today's date in the box to the right.
    • Click Go. One line displays for each file uploaded.
    • For each file, click the Custom Report Response File link to view any errors in the claim format.
  5. The next day, use the Claim Inquiry link to look up each claim and verify that it will be paid.