American College Of Surgeons - Inspiring Quality: Highest Standards, Better Outcomes

MBSAQIP Participant Use Data File (PUF)

The Participant Use Data File (PUF) is a Health Insurance Portability and Accountability Act (HIPAA)-compliant data file containing cases submitted to the Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program (MBSAQIP®) Data Registry. The PUF contains patient-level, aggregate data and does not identify hospitals, health care providers, or patients. The intended purpose of this file is to provide researchers at participating sites with a data resource they can use to investigate and advance the quality of care delivered to the metabolic and bariatric surgical patient through the analysis of cases captured by MBSAQIP. 

The PUF is provided at no additional cost to employees (surgeons, researchers, bariatric program staff, etc.) of MBSAQIP participant centers. With over 150,000 metabolic and bariatric cases captured across the United States and Canada each year, the MBSAQIP PUF is the largest, bariatric-specific, clinical dataset in the country and serves as an invaluable resource to investigators looking to answer important clinical questions in this field. It is part of the mission of the MBSAQIP to make this data available to all participants to improve the power and reliability of clinical research and further propel innovation in the field of metabolic and bariatric surgery. The data files are made available in a delimited text, SAS, and SPSS file type.

2015 PUF User Guide

The PUF User Guide is designed to accompany the 2015 Participant Use Data File available for download via the MBSAQIP website.The sections contained herein will provide the user with information on how to request the PUF, contents of the data files, data collection background, data limitations, and answers to frequently asked questions.
This user guide applies specifically to the inaugural 2015 PUF and will be updated with each subsequent PUF.

Request PUF

For questions or comments about the Participant Use Data File please contact Rasa Krapikas at