In response to the COVID−19 pandemic, clinical laboratories have increased their diagnostic testing capabilities and expanded their business by testing COVID−19 specimens from different states and entering into arrangements to conduct COVID−19 screening for employers. Despite waivers designed to make COVID-19 testing available and accessible on a widespread basis, labs must be careful in expanding

CMS recently issued an Advisory Opinion suggesting that physicians who refer diagnostic tests reimbursable under Medicare to a laboratory may, under certain circumstances, receive electronic pop-up notifications in the laboratory’s web-based portal alerting the physicians to various potential issues related to the test results.  In the Advisory Opinion, CMS considered certain alerts which a laboratory