The Workgroup for Electronic Data Interchange (WEDI) is the leading authority on the use of Health IT to improve health care information exchange in order to enhance the quality of care, improve efficiency and to reduce costs of the American health care system. Formed in 1991 by the Secretary of Health and Human Services (HHS), WEDI was named in the 1996 HIPAA legislation as an advisor to HHS and continues to fulfill that role today.