Source Files

Hospital Industry Data Institute (HIDI) provides emergency department (ED) records for Missouri to HCUP. Missouri collects all types of outpatient data and considers any service that is "not inpatient" as outpatient. Records include ED, surgery/OR, observation, and clinical/diagnostic services, as well as physician visits, home health care, and ambulance data.

The Missouri outpatient source file contains four indicators for outpatient service type:

• Emergency room (01)
• Outpatient surgery (02)
• Outpatient observation (03)
• Other outpatient (04)

One record can have multiple outpatient service types.

Selection of Records for Inclusion in the SEDD

All records identified by HIDI as ED are included in the SEDD (HCUP data element STATE_ED=1 based on service type 01).

Additionally, any other records with evidence of ED services that are flagged by the variable HCUP_ED (i.e., HCUP_ED>0) during HCUP processing are included in the SEDD. If a record in the SASD also has evidence of ED services based on the HCUP criteria (HCUP data element HCUP_ED not equal to 0), then the SASD record is also included in the SEDD. These records will have the same value for the HCUP data element KEY.

SEDD records with evidence of other types of outpatient services, such as observation services, can be identified by the data element OPService.

Types of Facilities Included in the Files Provided to HCUP by the Partner

HIDI provides HCUP with emergency department (ED) data from all licensed hospital-owned EDs in the State.

A comparison of the number of hospitals included in the SEDD and the number of hospitals reported in the AHA Annual Survey is available starting in data year 2010.

Hospital-owned EDs do not always report data for a full calendar year. Some open or close during the year; others have technical problems that prevent them from reporting data for all months in a year.

Exclusion of Records During HCUP Data Processing

Beginning with 2016 data, records with a discharge disposition of "still a patient" are retained in the HCUP SEDD. Prior to 2016 data, these records were excluded.