Guidance on Coordination of Benefits (COB) File Interpretation
Guidance for: Part D sponsors regarding the interpretation, usage and availability of information contained within the coordination of benefits (COB) file. Part D sponsors and States have been reporting either delayed or inaccurate COB information when a pharmacy submits a Part D claim for processing.
Issued by: Centers for Medicare & Medicaid Services (CMS)
Issue Date: November 24, 2008
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