“…Confronted with a battery of metrics and no guidance about which are most important, providers and patients may be none the wiser about which institutions provide the best care. 30 To address these concerns, measures are sometimes retired once performance "tops off" (ie, when most providers are scoring near or at 100%), on the basis that the value in ongoing measurement will be limited. 31,32 For example, CMS has started retiring a number of heart failure and heart attack measures such as the prescribing of β-blockers at discharge for patients with a myocardial infarction.…”