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AB2D v3 is here!

Read the full announcement on AB2D v3 or learn how to migrate. Access to v1 and v2 will be removed on July 30, 2027.

AB2D Data

Learn about claims data and how to apply it in context. The AB2D API shares large volumes of enrollee data, including:

Definitions of Part A and Part B claims data
Data type Definition
Medicare Part A claims data Inpatient hospital stays, care in skilled nursing facilities, and hospice care
Medicare Part B claims data Various doctors' services, outpatient care, medical supplies, and preventive services

There are specific permitted uses for the data. Visit API Documentation for details on accessing production data and the claims data format.

Data Dictionary

Get a detailed breakdown of data elements provided by AB2D.

Sample files

Download sample, unformatted NDJSON files. Each line is a JSON object that can be read with a text editor like the format viewer.

Guides

Learn how to use AB2D and understand enrollees’ claims data.

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