skip to content
Thank you for visiting First Coast Service Options' Medicare provider website. This website is intended exclusively for Medicare providers and health care industry professionals to find the latest Medicare news and information affecting the provider community.
To enable us to present you with customized content that focuses on your area of interest, please select your preferences below:
Select which best describes you:
Select your location:
Select your line of business:
This website provides information and news about the Medicare program for health care professionals only. All communication and issues regarding your Medicare benefits are handled directly by Medicare and not through this website. Information for Medicare beneficiaries is only available on the website.
En Español
Text Size:
Send a link to this page
[Multiple email adresses must be separated by a semicolon.]

COB (Coordination of benefits)

Modified: 8/3/2019
The Centers for Medicare & Medicaid Services (CMS) is restructuring its coordination of benefits and Medicare secondary payer recovery webpages. Visit this overview page, then select from the links at left and under the Related Links section.
Modified: 8/2/2019
Follow this link to the Coordination of Benefits Agreement (COBA) page on the CMS website.
Modified: 5/8/2019
Medigap claim-based COBA IDs to be used on incoming claims as of November 1, 2010. [CR 5662]
Modified: 4/2/2019
General Coordination of benefits information on
First Coast Service Options (First Coast) strives to ensure that the information available on our provider website is accurate, detailed, and current. Therefore, this is a dynamic site and its content changes daily. It is best to access the site to ensure you have the most current information rather than printing articles or forms that may become obsolete without notice.
Part B