|ASOURCE - Admission source, uniform coding|
|State Specific Notes|
The Uniform Billing UB-04 Specifications changed coding specifications for Source of Admission to Point of Origin for Admission or Visit. While this change was scheduled to start as of October 1, 2007, the change-over date was not universally followed. During HCUP processing, coding was examined by hospital and information was stored in ASOURCEUB92/ASOURCE_X and PointOfOriginUB04/PointOfOrigin_X as most appropriate. Sometimes there was not a succinct change from one coding scheme to another. Original source values are retained in ASOURCE_X and PointOfOrigin_X if there is any question about the coding. Regardless of which variables are reported, the best source for identifying admissions through the emergency department (ED) is the HCUP data element HCUP_ED which looks across admission source, point of origin, and ED charges to identify ED admissions.
Three HCUP data elements contain information on the source of admission:
If the state includes enough detail in the coding of the source of admission to accurately code ASOURCEUB92, then the HCUP data element ASOURCE is coded from ASOURCEUB92 as specified below. Otherwise, ASOURCE is coded from ASOURCE_X and specifications are listed under State Specific Notes.
|State Specific Notes|
Maryland changed the coding of admission source in July 2001. From July 2001 to December 2001, some hospitals may be using the old coding scheme.
Beginning in 2007, Maryland included the records from all other outpatients, Greenbaum cancer center, and UMMS shock trauma in the unified AS and ED outpatient data file. The inclusion of these new records resulted in increasing the frequencies of records categorized in ASOURCE = 1, Emergency department, and ASOURCE = 5, Routine including births and other sources.
Maryland does not report this data element for emergency department records. Beginning in 2003 HCUP processing, a small number of ambulatory surgery records were placed in the SEDD due to HCUP guidelines. Consequently, these records contain valid data using Maryland ambulatory surgery coding definitions.
Prior to 2002, South Carolina did not provide enough detail in the coding of ASOURCE_X to code the HCUP variable ASOURCEUB92.
|Internet Citation: HCUP Central Distributor SEDD Description of Data Elements - All States. Healthcare Cost and Utilization Project (HCUP). September 2008. Agency for Healthcare Research and Quality, Rockville, MD. www.hcup-us.ahrq.gov/db/vars/sedddistnote.jsp?var=asource.|
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|Last modified 9/11/08|