WEDI is a nonprofit organization focused on the use of health IT to improve healthcare information exchange enhancing quality
of care, improving efficiency and reducing costs.

"I’d like to extend my congratulations to WEDI
for their continued industry leadership and vision
in tackling healthcare’s most challenging issues."

Aneesh Chopra
The 1st Chief Technology Officer
United States

  • Guidance on Implementation of Standard Electronic Attachments for Healthcare Transactions

    by Samantha Holvey | Apr 03, 2018
    This white paper is focused on the business and operational processes of exchanging additional information (Attachments) using the HL7 standards for clinical information and the X12 transaction sets for requesting and receiving the additional information. The detailed technical requirements are not covered in this white paper as the standards development organizations have provided the technical guidance in the standards implementation documents. For definitions of abbreviations, acronyms and other terms used throughout this paper refer to Appendix A of the HL7 CDA R2 Attachment Implementation Guide: Exchange of C-CDA Based Documents, Release 1 – US Realm.

    This white paper will provide the following:
    • An overview of Attachments
    • Resources needed to have a successful implementation of Attachments
    • A review of some of the current processes for requesting and responding to the need for additional information to help understand the challenges
    • Examples of implementation approaches in the industry
    • A review of Electronic Attachment Business flows for Claims, Prior Authorizations and Notification
    • Business use cases and examples
    • A guidance on how to embed additional information within the applicable ASC X12N transaction.
    Guidance on Implementation of Standard Electronic Attachments for Healthcare Transactions White Paper

Featured Articles

WEDI: ICD-10 transition should be template for future mandates

May 10, 2016, 11:55 AM

Here’s a surprise twist in the ICD-10 saga: Now that the tortuous oft-delayed transition is said and for the most part done, the Workgroup for Electronic Data Interchange is publicly recommending that the federal government use it as a template for future mandates.

WEDI, of course, serves in an advisory role to the Department of Health and Human Services and has been conducting ICD-10 readiness surveys since 2009. So it follows that the organization in March 2016 launched a post-implementation survey to find out why the conversion to ICD-10 “went so well,” that WEDI called it a “non-eventful transition.”

WEDI’s research found that all the compliance deadline delays added cost and confusion to the ICD-10 switch, but also gave payers, providers and technology vendors more time for testing and ultimately made the transition such that most were ready.

To read the full article, visit   

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