Thank you for reaching out with your question concerning CMS135v11-Heart Failure (HF): Angiotensin-Converting Enzyme (ACE) Inhibitor or Angiotensin Receptor Blocker (ARB) or Angiotensin Receptor-Neprilysin Inhibitor (ARNI) Therapy for Left Ventricular Systolic Dysfunction (LVSD). The inpatient population (Population 2) was removed from the measure after we received implementer feedback that Population 2 was not calculating correctly. The incorrect calculation was due to the blending of patient-based and encounter-based populations into one measure. Population 2 was only considering one inpatient discharge per measurement period rather than each discharge, which did not align with the intent of the measure. After much discussion with our Technical Expert Panel and logic experts, it was decided to remove Population 2 from the measure, to better align with measure intent and the QPP program goals.