Section 9.14.1 Immunization, Administered - change comma to period row 12 comment first sentence (shown in red): authorDatetime Immunization.recorded When the immunization was first captured in the subject’s record , This QDM attribute is most useful for the negation rationale use case – i.e., documentation why an immunization did not happen. Since the meaning is the timing of information capture, this element may also not be helpful to determine when vaccines given elsewhere were administered.