Thank you for your inquiry regarding CMS165v13 (2025 Performance Period). To answer your first question, the logic is specified such that if the providers are sharing EHRs or sharing data through Health Information Exchange, all providers that have access to the EHR documentation or data could use for reporting. A patient will not be eligible for the measure if there is no documented evidence of an active essential hypertension diagnosis using a code from the "Essential Hypertension" value set (2.16.840.1.113883.3.464.1003.104.12.1011) within the first six months of the measurement period. To answer your second question, the measure logic specifies that diagnoses such as essential hypertension must be active within the first six months of the measurement period to qualify for initial population, as expressed in the CQL logic below. If the diagnosis is resolved before the start of the measurement period, it does not meet the criteria. Essential Hypertension Diagnosis ["Diagnosis": "Essential Hypertension"] Hypertension where Hypertension.prevalencePeriod overlaps Interval[start of "Measurement Period", start of "Measurement Period" + 6 months ) Please review the measure specification for further details about measure requirements: https://ecqi.healthit.gov/sites/default/files/ecqm/measures/CMS165v13.html . If you have questions about reading the measure specification or understanding data requirements, you may refer to the "Guide for Reading eCQMs" for additional guidance. If you have questions regarding implementing the measure, you may refer to the "Implementation Checklist for eCQM Annual Update" for additional guidance. These resources can be found in the eCQI Resource Center: https://ecqi.healthit.gov/ep-ec?qt-tabs_ep=ecqm-resources&global_measure_group=eCQMs .