Part D Guidance – Low-Income Subsidy (LIS) Status Corrections Based on Best Available Evidence
Guidance for providing guidance to Part D plan sponsors on the policies and procedures for
initiating corrections to CMS’ low-income subsidy data for plan enrollees for whom the plan has
documentation— “best available evidence” (BAE)—about their Medicaid eligibility or residence
in an institution under a Medicaid-covered stay
Issued by: Centers for Medicare & Medicaid Services (CMS)
Issue Date: June 27, 2007
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