HCUP Nationwide Ambulatory Surgery Sample (NASS)
The Healthcare Cost and Utilization Project (HCUP) includes the largest collection of longitudinal hospital care data in the United States and made possible by a Federal-State-Industry partnership sponsored by the Agency for Healthcare Research and Quality (AHRQ). The Nationwide Ambulatory Surgery Sample (NASS) provides data about major ambulatory surgery encounters in hospital-owned facilities in the United States. The ambulatory surgeries selected for inclusion in the NASS are therapeutic procedures, which require the use of an operating room, penetrate or break the skin, and involve regional anesthesia, general anesthesia, or sedation to control pain. Procedures intended primarily for diagnostic purposes are excluded. To be considered in-scope for the NASS, ambulatory surgeries are also required to have a relatively high annual volume or aggregate total facility charge. The NASS is also limited to encounters with at least one in-scope major ambulatory surgery on the record, performed at hospital-owned facilities.
- Documentation
- Research Data Commons Learning Module(s)
- Access Instructions
Available to IU faculty, graduate students, and (with a faculty sponsor) undergraduate students. Enroll in the Canvas course to request access. Additional requirements:
- Complete HCUP required training and data use agreement.
- Maintain CITI and HIPAA certification.
- Timeframe
- 2018-2022
- Keyword Subject
- Medical care
- Health facilities
- Surgery
- Spatial Subject
- United States
- Domain Subject
- Data Location
- Restricted-Access Data Remote Server (RADaRS)
- Public Contact
- Emily Meanwell ( emeanwel@iu.edu)
- Hosting Unit
- Campus
- Access Eligibility