All supplemental data requirements are included in General Guideline 39 in the HEDIS 2014 Volume 2 Technical Specification. Customers can find additional information about the supplemental data policy (including FAQs specific to supplemental data) at the following link, http://www.ncqa.org/Newsroom/MediaEvents/HEDIS2014CodeTransitionSupplementalDataUse.aspx.
HEDIS 2014