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New Medicare Card: Claims with HICNs Will Be Rejected Starting January 1, 2020

Starting January 1, you must use Medicare Beneficiary Identifiers (MBIs) when billing Medicare, regardless of the date of service. CMS will reject claims submitted with Health Insurance Claim Numbers (HICNs), with a few exceptions. Additionally, CMS will reject all eligibility transactions submitted with HICNs. For more information on how to find and use MBIs, CMS has provided this resource.

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