Thank you for your inquiry. The intent for population 1 is to have at least 84 days of continuous antidepressant medication treatment within the 114 days following the Index Prescription Start Date (total 115 days). There were limitations in QDM on how cumulative medication duration (CMD) could be expressed. The change to CQL has made the expression and calculation of CMD more accurate.​

In measure CMS128v6, the plain English description for Numerator 1 is... Patients who have received antidepressant medication for at least 84 days (12 weeks) of continuous treatment during the 114-day period following the Index Prescription Start Date. The corresponding logic description is... Numerator = AND: Sum>= 84 day(s): "Medication, Active: Antidepressant Medication (cumulative medication duration)" <= 114 day(s) ends after start of $InitialDepMedication When a Medication Active starts at the InitialDepMedication and continues for greater than 114 days, it will not qualify those days of Active for this measure according to the logic, though the plain english description implies that they should because it is *at least* 90 days of medication active during that first 114 days. https://ecqi.healthit.gov/ecqm/measures/cms128v6 This appears it may be discrepancy between the plain english description and the measure logic. Is there a clarification for this? This came up through exploring Cypress issue linked below. https://oncprojectracking.healthit.gov/support/projects/CYPRESS/issues/CYPRESS-1556