In two recent memoranda, the Centers for Medicare and Medicaid Services (CMS) made changes to previously issued survey guidance related to COVID-19 vaccination issues. In QSO-22-17-ALL, CMS modified the frequency by which State Agencies and Accreditation Organizations will survey for compliance with the federal staff vaccine mandate applicable to health care providers and suppliers (discussed in a prior post).  Noting that 95% of providers and suppliers surveyed have been found in substantial compliance…