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. For the most comprehensive experience, we encourage you to visit Medicare.gov or call 1-800-MEDICARE. In the event your provider fails to submit your Medicare claim, please view these resources for claim assistance.
En Español
Text Size:
Send a link to this page
[Multiple email adresses must be separated by a semicolon.]
Last Modified: 1/24/2020 Location: FL, PR, USVI Business: Part A, Part B

Avoid claim rejects

The transition period is over. You must now submit only the MBI on Medicare claims regardless of the date of service. If not, Medicare will reject claims submitted with the health insurance claim number (HICN), with a few exceptions. This means your payments will be delayed causing you unnecessary rework to correct and resubmit the claim.

How to avoid payment delays

Providers must bill the MBI to prevent claim and payment impacts. Take these actions to obtain the MBI:
Ask your patient for their new Medicare card. If they don’t have it, they have the option to call 1-800-MEDICARE (1-800-633-4227) or print their card from Medicare.gov external link.
Obtain the MBI from First Coast’s MBI lookup tool on our Secure Provider Online Tool (SPOT). View this short video to see how simple it is to obtain the MBI on SPOT (1:47).
Why Can’t I look up an MBI without a Social Security Number?
To protect patient’s new MBI numbers, the Centers for Medicare & Medicaid Services require the beneficiary’s Social Security number, full name, and date of birth to obtain an MBI through SPOT. CMS instructions require the Social Security number for authentication purposes and there are no plans change this process.
If you’re not registered for SPOT, now is the time to do so. Here is how to register for SPOT.
Obtain the MBI from your remittance advices (RA) received between October 1, 2018 through December 31, 2019 for claims submitted with a valid and active health insurance claim number (HICN) prior to January 1, 2020. The MBIs were returned on the RA during the transition period.

Contacting customer service

When calling the provider contact center, providers must authenticate with the beneficiary’s MBI, not the HICN. If you cannot authenticate with the MBI, the provider contact center representative will not be able to assist you.

Claim status query

You can use the HICN or MBI to check the status of a claim (276 transactions) if the earliest date of service on the claim is before January 1, 2020. If you are checking the status of a claim with a date of service on or after January 1, 2020, you must use the MBI.

Reminders about using the old or new MBIs

The beneficiary or their authorized representative can request an MBI change. CMS can also change an MBI. An example is if the MBI is compromised. It’s possible for your patient to seek care before getting a new card with the new MBI.
If you get a HETS eligibility transaction error code (AAA 72) of “invalid member ID,” your patient’s MBI may have changed. There are different scenarios for using the old or new MBIs:
Fee-For-Service (FFS) claims submissions with:
Dates of service before the MBI change date – use old or new MBIs
Span-date claims with a “From Date” before the MBI change date – use old or new MBIs
Dates of service that are entirely on or after the effective date of the MBI change – use new MBIs
FFS eligibility transactions when the:
Inquiry uses new MBI – we will return all eligibility data.
Inquiry uses the old MBI and request date or date range overlap the active period for the old MBI – we will return all eligibility data. We will also return the old MBI termination date.
Inquiry uses the old MBI and request date or date range are entirely on or after the effective date of the new MBI – we will return an error code (AAA 72) of “invalid member ID.”

Additional MBI resources

New MBI Get it, Use it – MLN Matters® SE 18006 external pdf file
Looking for an MBI? Use the MBI lookup on SPOT – click here to register
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.