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Our top priority is providing value to members. Your Member Services team is here to ensure you maximize your ACS member benefits, participate in College activities, and engage with your ACS colleagues. It's all here.

Become a Member
Become a member and receive career-enhancing benefits

Our top priority is providing value to members. Your Member Services team is here to ensure you maximize your ACS member benefits, participate in College activities, and engage with your ACS colleagues. It's all here.

Become a Member
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2025 Data Dictionary Download

Thank you for completing the ACS Terms of Use form to download to the NTDS 2025 Data Dictionary.

Remember to save the download to your local machine to avoid filling out the form again. When you open the document, click on the Download icon in the upper right corner to save it to your computer or mobile device.

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ACS materials are protected by US copyright, with all rights reserved by the American College of Surgeons (ACS). ACS materials may be cited in academic publications as well as downloaded and printed for individual non-commercial use, where specifically permitted. All other use is prohibited without ACS’ express written permission. ACS materials may not be distributed, resold, reproduced in whole or in part, or used to create revenue-generating content by any person or entity other than ACS without the express written permission of ACS. Additionally, ACS materials, including all data and content, cannot be copied, distributed, posted, displayed, published, modified, or embedded in or used as part of presentations, publications, third-party applications, platforms, software, or websites without prior express written authorization from ACS. This restriction explicitly includes, but is not limited to, the integration of ACS content into tools leveraging artificial intelligence (AI), machine learning, large language models, or generative AI technologies and infrastructures. Violation of this policy may result in immediate revocation of access, termination of user accounts, and legal action as deemed appropriate by ACS,