HCUP State Ambulatory Surgery and Services Databases (SASD) File Composition
This section provides State-specific information on the original data files provided by the HCUP Partner organizations for the development of the HCUP outpatient databases. Information includes how the ambulatory surgery and services data are collected by the HCUP Partner organizations and how these data are handled during the creation of the HCUP SASD:
The HCUP State Ambulatory Surgery and Services Databases (SASD) include encounter-level data for ambulatory surgeries and may also include various types of outpatient services such as observation stays, lithotripsy, radiation therapy, imaging, chemotherapy, and labor and delivery. The specific types of ambulatory surgery and outpatient services included in each SASD vary by State and data year. All SASD include data from hospital-owned ambulatory surgery facilities. In addition, some States include data from facilities not owned by a hospital. The designation of a facility as hospital-owned is specific to its financial relationship with a hospital that provides inpatient care and is not related to its physical location. Hospital-owned ambulatory surgery and other outpatient care facilities may be contained within the hospital, physically attached to the hospital, or located in a different geographic area. The designation as hospital-owned means that HCUP can identify that the hospital is billing for this service.
Selection of Records for Inclusion in the SASD
Some HCUP Partners provide ambulatory surgery (AS) and other outpatient services data to HCUP in a separate file. Others, however, provide a single outpatient file that includes AS, other outpatient services, and emergency department (ED) data. HCUP uses State-defined indicators of AS and ED records for inclusion in the SASD and State Emergency Department Databases (SEDD). Records identified by the State as AS are included in the SASD. Records identified by the State as ED are included in the SEDD. Additionally, some States provide indicators of observation services (OS). If available, records with OS in combination with ED services would be included in the SEDD; OS records without ED services would be included in the SASD. Three HCUP data elements (STATE_AS for AS records, STATE_ED for ED records, and STATE_OS for observation services (OS) records) include information on the State-defined record type. They are set to a value of 1 if the State identifies the record as AS, ED, or OS respectively.
The selection of outpatient records for inclusion on the SASD has varied across data years:
|Internet Citation: HCUP State Ambulatory Surgery and Services Databases (SASD) File Composition Healthcare Cost and Utilization Project (HCUP). October 2018. Agency for Healthcare Research and Quality, Rockville, MD. www.hcup-us.ahrq.gov/db/state/sasddist/sasd_multi.jsp.|
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|Last modified 10/30/18|