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n2c2 Challenges

Registration for the current challenges has closed. Learn more on the n2c2 website.

If you have your own annotations on n2c2 (formerly i2b2) data that you would like to contribute to the research community, you may submit them at any time through n2c2 Data Upload: Community generated annotations. Thank you!

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n2c2 Data Upload: Community generated annotations

Community generated annotations on n2c2 (former i2b2) data


2022 Challenge — Track 1

Track 1: Contextualized Medication Event Extraction (registration closed April 1)


2022 Challenge — Track 2

Track 2: Extracting Social Determinants of Health (SDOH) (registration closed April 1)


2022 Challenge — Track 3

Track 3: Progress Note Understanding: Assessment and Plan Reasoning (registration closed May 1)