C-CDA 2.1 Companion Guide Project

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Overview

This page supports the HL7 Contract work for the C-CDA R2.1 Companion Guide Project. This project's goal is to produce a new C-CDA Companion Guide to support C-CDA R2.1 and to provide more context in assisting implementers. The purpose of the new Companion Guide is:

• 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 IG to meet the needs of clinicians and achieve ONC Certification

Resources

To assist with finding "pain points" for implementers, the following initiatives have been taken:

• HL7 C-CDA R2.1 Implementer Survey
• C-CDA Implementation-a-Thon 1
• C-CDA Implementation-a-Thon 2 (still to be held)

Issues/Guidance To Consider for Inclusion

• examples (vetted by the Examples Task Force)
• general nullFlavor clarification on how to use and when it is allowed
• clear conformance statement guidance - i.e. what does SHALL mean as compared to SHOULD or MAY
• discussion re: guidance on narrative text representation
• how to represent gender identity concepts - i.e. beyond administrativeGender value set
• how to represent no known (allergies, meds, etc.)
• how to represent no information about (allergies, meds, etc.)
• guidance for CCDS sections when they are not noted as being part of the base document template
• guidance on how to represent medications for discharge summaries where one could have admission meds, administered meds and discharge meds (and possibly in addition to a medications section)
• examples for detailed race and detailed ethnicity and use of the sdtc extension
• language code clarification as per http://www.hl7.org/dstucomments/showdetail_comment.cfm?commentid=806
• using open templates vs. closed templates
• how to represent pregnant / not-pregnant / unknown

Deliverables for Review

• Coming Soon