To meet criteria using this datatype, the communication indicated by the Communication QDM category and its corresponding value set must be communicated from one provider to another. Timing: The time the communication occurs, or is sent; Author dateTime.
ObservableCode.CodeableConcept
Value Set
The time the data element was entered into the clinical software. Note, some datatypes include both Relevant Time and Author dateTime attributes. The purpose is to accommodate Author dateTime if the actual start and stop times are not available when evaluating for feasibility, and also to allow specification of a time for Negation Rationale.
An attribute that indicates one QDM data element fulfills the expecations of another QDM data element. See Appendix A.4 for examples for using relatedTo.