|General SASD Notes|
Types of Ambulatory Surgery and Other Outpatient Services Collected by the Partner
Starting in 2015, Kentucky began collecting all ambulatory surgery and other outpatient services data from the hospital-owned and nonhospital-owned facilities that report their data, not just the cases where a particular set of CPTs were identified. To more clearly identify the type of outpatient services, Kentucky also created 18 service markers which allowed for a record to be identified by multiple types of outpatient services. The service markers were created using the combination of CPT and UB04 revenue codes and included: outpatient surgery, observation care, emergency department care, mammography, computed tomography (CT) scan, magnetic resonance imaging (MRI), positron emission tomography (PET) scan, radiation therapy, cardiac catheterization, behavioral health, laboratory, restorative services, sleep lab, and other imaging.
Starting in 2014, Kentucky changed their outpatient surgery data collection criteria to include any record with a procedure listed within the surgery section of the CPT manual. The surgical section included minor procedures such as injection, blood draw, intravenous (IV) drip, etc. Kentucky defined the patient type based on the classification of the CPT code. For example, if a patient was treated in the emergency department, received an IV, and was discharged home, the patient type was identified as outpatient surgery (patient type OS) instead of emergency care.
Prior to 2014 data, Kentucky uses the following hierarchy and definitions to mark each outpatient record with a service type:
Because of the hierarchical assignment for the patient type, an outpatient encounter that involved ambulatory surgery and observation care was only flagged as outpatient surgery. However, ambulatory surgery records with evidence of observation services can be identified by HCUP data element HCUP_OS.
Outpatient Data File Provided to HCUP by the Partner
Starting in 2015, outpatient services are identified by the 18 service markers. These markers are used to assign HCUP data elements STATE_AS (sm_surg=Y indicating an outpatient surgery), STATE_ED (sm_er=Y indicating emergency department care), and STATE_OS (sm_obsv=Y indicating observation services).
Prior to 2015 data, outpatient services are identified by service type. The service type is stored in the HCUP data element OPservice. It is also used to assign the HCUP data elements STATE_AS (service type OS), STATE_ED (service type ED),and STATE_OS (servicetype OC).
Selection of Records for Inclusion in the SASD
Additionally, any record in the SASD that also have evidence of ED services based on the HCUP criteria (HCUP data element HCUP_ED > 0), are also included in the HCUP State Emergency Department Databases (SEDD). These records will have the same value for the HCUP data element KEY.
Types of Facilities Included in the Files Provided to HCUP by the Partner
Identification of Hospital-Owned Ambulatory Surgery and Other Types of Outpatient Facilities in the SASD
If the facility in the SASD does not meet any of the above criteria, it is marked as not being owned by a hospital (HOSPITAL_OWNED = 0). Not all hospitals report to the AHA, so there is a possibility that some facilities marked with HOSPITAL_OWNED=0 are hospital-owned.
From data year 1998-2018, the HCUP data element was called FREESTANDING. A facility is considered hospital-owned (FREESTANDING = 0) if any one of the following is true:
If the facility in the SASD does not meet any of the above criteria, it is marked as not being owned by a hospital (FREESTANDING = 1). Not all hospitals report to the AHA, so there is a possibility that some facilities marked with FREESTANDING=1 are hospital-owned.
Exclusion of Records During HCUP Processing
Beginning in 2017, records with a discharge disposition of "still a patient" are retained in the HCUP SASD. Prior to 2017, these records were excluded.
Beginning in 2010, records with a designation of "admitted as an inpatient" are retained in the SASD, even though this rarely occurs. Prior to 2010, records with a designation of "admitted as an inpatient" were excluded from the files.
|Internet Citation: HCUP Central Distributor SASD Kentucky File Composition. Healthcare Cost and Utilization Project (HCUP). August 2006. Agency for Healthcare Research and Quality, Rockville, MD. www.hcup-us.ahrq.gov/db/state/sasddist/sasddist_filecompky.jsp.|
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|Last modified 8/15/06|