Update C-CDA Value Sets

1. Review and perform 'quality assurance' (QA) against current C-CDA value set definitions in VSAC (Value Set Authority Center) by:
a. Confirming all value sets are present; b. Confirming current scope/definition of value sets; c. Confirming the dependent code systems of value sets; d. Confirming the current expansion sets of value sets; e. Creating expression based definitions for all value sets.

2. Identify the key CCDA community members that are involved in the use and maintenance of CCDA Value Set content that must be engaged in the project along with their responsibilities for value set maintenance, including gaps in support

3. Define requirements and processes for ongoing maintenance of C-CDA value sets; implement those requirements and pilot the processes for C-CDA value sets so as to establish a new baseline collection of up-to-date CCDA value sets.

4. Continue the work as defined in #3 to develop value set updates and present those changes as issues for discussion or errata to the Structured Documents Work Group (SDWG) on an ongoing basis. Collaborate with the SDWG on the resolution of these changes by hosting a wiki consensus review.

5 .Integrate VSAC with the open-source Trifolia template development tool.