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The Public Comment is now open through March 25, 2026 on the Draft 2027 CMS QRDA I Implementation Guide, Schematron, and Sample File for Hospital Quality Reporting
When the order indicates the first immunization administration should occur. active dateTime is most often used to specify immunizations for which administration is intended at a specific time in the future. If active dateTime is not specified, it defaults to the author dateTime (when signed).