ADE Prevention and Monitoring: Warfarin Time in Therapeutic Range

Average percentage of time in which patients aged 18 and older with atrial fibrillation who are on chronic warfarin therapy have International Normalized Ratio (INR) test results within the therapeutic range (i.e., TTR) during the measurement period.

 

Measure Steward

Centers for Medicare & Medicaid Services (CMS)

 

Measure Numerator

Measure Observations Statement: Average percentage of time that patients in the measure population have INR results within the therapeutic range (i.e., TTR).

 

Measure Denominator

Initial Patient Population Statement: Patients aged 18 and older with atrial fibrillation without valvular heart disease who had been on chronic warfarin therapy for at least 180 days before the start of and during the measurement period. Patient should have at least one outpatient visit during the measurement period.

Measure Population Statement: Equals All in Initial Patient Population with sufficient international normalized ratio (INR) results to calculate a warfarin time in therapeutic range (TTR).