Interoperability Proving Ground (IPG) submissions within the ONC Tech Lab are submitted by healthcare, technology and development organizations that are invested in Health IT and Interoperability and want to share, learn and collaborate with similar stakeholders in the US, and around the world.

To view all submissions, please view the IPG link located within the ONC Techlab.

C-CDA R2.1 Companion Guide

Produce a new C-CDA Companion Guide to support C-CDA R2.1. The purpose of the new Companion Guide is to supplement the C-CDA R2.1 Implementation Guide to provide additional context to assist implementers and connect them to tools and resources; map the common clinical data set (CCDS) to the appropriate C-CDA locations; provide technical guidance for representing the 2015 Ed. CEHRT data requirements using the C-CDA Implementation Guide; include clinically-valid examples of C-CDA components necessary to meet 2015 Ed. CEHRT requirements; recommend an approach to implementations using the C-CDA Implementation Guide to meet the needs of clinicians and achieve ONC Certification

Deliverables from this project include creating a Common Clinical Data Set (CCDS) requirements mapping spreadsheet from the 2015 certification rule to the appropriate C-CDA location; creating a Meaningful Use (MU) mapping for additional data specified for: CCD, Discharge Summary, Referral Note, and Care Plan; creating a draft version of the C-CDA R2.1 Companion Guide;make it available to the public through the HL7 Wiki; conduct a webinar to advise the industry of its availability and review its content; ballot, reconcile and publish the C-CDA R2.1 Companion Guide.

The following Wiki page was created for this project:

The published C-CDA R2.1 Companion Guide can be viewed via the link below.
Start Date
Projected End Date
Project Tags
  • C-CDA
  • CCDA
  • CDA
  • EHR
  • HL7
Project Point of Contact:
Project Results
The published C-CDA R2.1 Companion Guide can be viewed via the link below.