Washington State Medicaid

Companion Guides

Companion Guides are intended for trading partner use in conjunction with the ANSI ASC X12N National Implementation Guide. The ANSI ASC X12N Implementation Guides can be accessed at HIPAA EDI Implementation Guides.

The companion guides below outline the procedures necessary for engaging in Electronic Data Interchange (EDI) with ACS EDI Gateway, Inc. and specifies data clarification where applicable.

For a full discussion of the DSHS Implementation schedule, see the Executive Summary at http://maa.dshs.wa.gov/dshshipaa/.