Wednesday, February 13, 2019

Important Reminder Regarding Health Insurance Claim Number (HICN)/Social Security Number (SSN) Masking


Centers for Medicare & Medicaid Services

This notice serves as a reminder that in accordance with the SSN Fraud Prevention Act of 2017, the COB&R program will mask the SSN and SSN-portion of the HICN, on all outgoing letters as of April 1, 2019. 
The first five digits of the SSN will be masked with asterisks (e.g., *****1234A). All outgoing hardcopy and electronic letters will be included in this change.  Note that the Medicare Beneficiary Identifier, which is not SSN-based, will not be impacted by this change and will continue to appear in full.


Centers for Medicare & Medicaid Services (CMS) has sent this update. To contact Centers for Medicare & Medicaid Services (CMS) go to our contact us page.

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