Thank you for the comment. Patient Characteristic Expired is fixed to SNOMED-CT® code 419099009 (Dead) and therefore cannot be further qualified with a value set. This is to reduce ambiguity and the potential for errors in coding measures and data referencing patients who have expired. It should be noted this correction was made internally to the Measure Authoring Tool and locked into the standard such that the value set reference is no longer required or allowed.