Introducing automatic transaction enrollment requests for MBI lookups with SSN

Feb 25, 2026

Eligibility checks

Stedi now supports automatic transaction enrollment requests for MBI lookups with a Social Security Number (SSN).

What’s an MBI lookup?

A Medicare Beneficiary Identifier (MBI) is a unique ID for a Medicare beneficiary.

You need an MBI to run Medicare eligibility checks.

If you don’t have the patient’s MBI, you can get it using an MBI lookup with the patient’s demographic details and, optionally, their SSN.

What’s changing

To run MBI lookups with an SSN, you must complete transaction enrollment for the provider with the MBILU payer.

If Stedi receives an AAA error indicating the provider isn't enrolled with the payer, we now automatically create an enrollment request.

You can track and manage these enrollment requests using Stedi's Enrollments API or the Stedi portal.

Note: Automatic enrollment requests are not yet supported for the MBILUNOSSN (MBI lookup without SSN) payer.

For more details, check out our Transaction enrollment docs.

Stedi now supports automatic transaction enrollment requests for MBI lookups with a Social Security Number (SSN).

What’s an MBI lookup?

A Medicare Beneficiary Identifier (MBI) is a unique ID for a Medicare beneficiary.

You need an MBI to run Medicare eligibility checks.

If you don’t have the patient’s MBI, you can get it using an MBI lookup with the patient’s demographic details and, optionally, their SSN.

What’s changing

To run MBI lookups with an SSN, you must complete transaction enrollment for the provider with the MBILU payer.

If Stedi receives an AAA error indicating the provider isn't enrolled with the payer, we now automatically create an enrollment request.

You can track and manage these enrollment requests using Stedi's Enrollments API or the Stedi portal.

Note: Automatic enrollment requests are not yet supported for the MBILUNOSSN (MBI lookup without SSN) payer.

For more details, check out our Transaction enrollment docs.

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Stedi and the S design mark are registered trademarks of Stedi, Inc. All names, logos, and brands of third parties listed on our site are trademarks of their respective owners (including “X12”, which is a trademark of X12 Incorporated). Stedi, Inc. and its products and services are not endorsed by, sponsored by, or affiliated with these third parties. Our use of these names, logos, and brands is for identification purposes only, and does not imply any such endorsement, sponsorship, or affiliation.

Get updates on what’s new at Stedi

Backed by

Stedi and the S design mark are registered trademarks of Stedi, Inc. All names, logos, and brands of third parties listed on our site are trademarks of their respective owners (including “X12”, which is a trademark of X12 Incorporated). Stedi, Inc. and its products and services are not endorsed by, sponsored by, or affiliated with these third parties. Our use of these names, logos, and brands is for identification purposes only, and does not imply any such endorsement, sponsorship, or affiliation.

Get updates on what’s new at Stedi

Backed by

Stedi and the S design mark are registered trademarks of Stedi, Inc. All names, logos, and brands of third parties listed on our site are trademarks of their respective owners (including “X12”, which is a trademark of X12 Incorporated). Stedi, Inc. and its products and services are not endorsed by, sponsored by, or affiliated with these third parties. Our use of these names, logos, and brands is for identification purposes only, and does not imply any such endorsement, sponsorship, or affiliation.