Part D Coordination of Benefits File Updates
Guidance for notifying Part D sponsor staff responsible for the receipt and handling of Coordination of Benefits (COB) files from the Centers for Medicare & Medicaid Services (CMS) of the upcoming annual full replacement file refresh. We are also taking this opportunity to announce a change in the way plans should use the effective date fields on the COB file.
Issued by: Centers for Medicare & Medicaid Services (CMS)
Issue Date: August 03, 2017
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