A QDM attribute provides specific detail about a QDM datatype.
Performance/Reporting Period
2020
QDM Definition (QDM Version 5.4):
The time the result report is generated and saved in the database.
NOTE: Although 2020 eCQMs use QDM Version 5.4, the QDM Version 5.5 Guidance Update provides clarification to the definition of this attribute which may be helpful when implementing eCQMs for 2020 Reporting/Performance periods.
QDM Version 5.5 Guidance Update:
The date and time this version of the observation was made available to providers, typically after the results have been reviewed and verified.