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hcup-us.ahrq.gov/datainnovations/raceethnicitytoolkit/nm6.jsp
July 01, 2014 - Database Information 
 
 
 
 Research Tools 
 
 
 Request Data … Reports & Publications 
 
 
 Data Visualizations 
 
 
 Data Query Tools 
 
 
 Home 
 
 
 About … HCUP Supplemental Files 
 NIS-Trend Weights Files 
 NIS Hospital Ownership Files 
 NIS 1993-2002 Discharge-Level … Reports Archive 
 
 
 
 
 
 
 
 DATA VISUALIZATIONS 
 
 
 
 
 
 DATA QUERY TOOLS … ANSWER: 
 	Your name was randomly chosen from the Hospital Inpatient Discharge Database in order to collect
                                     
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hcup-us.ahrq.gov/db/state/siddist/siddistvarnote2024.jsp
September 01, 2025 - Reports & Publications 
 
 
 Data Visualizations 
 
 
 Data Query Tools 
 
 
 Home 
 
 
 About … HCUP Supplemental Files 
 NIS-Trend Weights Files 
 NIS Hospital Ownership Files 
 NIS 1993-2002 Discharge-Level … Reports Archive 
 
 
 
 
 
 
 
 DATA VISUALIZATIONS 
 
 
 
 
 
 DATA QUERY TOOLS … Central Distributor SID: Availability of Data Elements 
 
   
 
 
			HCUP State Inpatient Databases … coding practices, click on the data element.
                                     
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hcup-us.ahrq.gov/db/state/siddist/siddistvarnote1990.jsp
September 01, 2007 - Reports & Publications 
 
 
 Data Visualizations 
 
 
 Data Query Tools 
 
 
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 About … HCUP Supplemental Files 
 NIS-Trend Weights Files 
 NIS Hospital Ownership Files 
 NIS 1993-2002 Discharge-Level … Reports Archive 
 
 
 
 
 
 
 
 DATA VISUALIZATIONS 
 
 
 
 
 
 DATA QUERY TOOLS … Central Distributor SID: Availability of Data Elements 
 
   
 
 
			HCUP State Inpatient Databases … coding practices, click on the data element.
                                     
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hcup-us.ahrq.gov/db/state/siddist/siddistvarnote1992.jsp
September 01, 2007 - Reports & Publications 
 
 
 Data Visualizations 
 
 
 Data Query Tools 
 
 
 Home 
 
 
 About … HCUP Supplemental Files 
 NIS-Trend Weights Files 
 NIS Hospital Ownership Files 
 NIS 1993-2002 Discharge-Level … Reports Archive 
 
 
 
 
 
 
 
 DATA VISUALIZATIONS 
 
 
 
 
 
 DATA QUERY TOOLS … Central Distributor SID: Availability of Data Elements 
 
   
 
 
			HCUP State Inpatient Databases … coding practices, click on the data element.
                                     
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hcup-us.ahrq.gov/db/state/siddist/siddistvarnote1991.jsp
September 01, 2007 - Reports & Publications 
 
 
 Data Visualizations 
 
 
 Data Query Tools 
 
 
 Home 
 
 
 About … HCUP Supplemental Files 
 NIS-Trend Weights Files 
 NIS Hospital Ownership Files 
 NIS 1993-2002 Discharge-Level … Reports Archive 
 
 
 
 
 
 
 
 DATA VISUALIZATIONS 
 
 
 
 
 
 DATA QUERY TOOLS … Central Distributor SID: Availability of Data Elements 
 
   
 
 
			HCUP State Inpatient Databases … coding practices, click on the data element.
                                     
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hcup-us.ahrq.gov/datainnovations/clinicaldata/AppendixEAHRQProjectDetails.pdf
January 15, 2008 - questionable data,  
• develop risk-adjusted measures of selected AHRQ inpatient quality indicators … will explain how reports of comparative risk-adjusted hospital performance on a 
selected set of AHRQ Inpatient … predictors of inpatient mortality and surgical complications for a 
wide variety of conditions and procedures … to develop preliminary risk-adjustment models for selected inpatient 
quality indications and patient … Predictive models for mortality will be developed for five medical 
Inpatient Quality Indicators (IQI
                                     
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hcup-us.ahrq.gov/datainnovations/clinicaldata/AdvisoryCouncilmeeting12032009_rev.pdf
December 31, 2007 - in Joining Clinical Laboratory 
Data to Administrative Inpatient Data
o Data Analysis
o Evaluation … Transmission
 Hospitals extracted laboratory and 
blood culture data from inpatient 
admissions …  All inpatients records and all 
laboratory tests were included in the 
dataset. …  Data collected from hospitals in 
the AHRQ project included:
 188,555 inpatient 
administrative … assigned to one of 314 admission APR 
DRG
• APR DRG uses the diagnosis, procedures, age, sex, and 
discharge
                                     
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hcup-us.ahrq.gov/pdf/HCUP-State-Data-Re-use-Application-Kit.pdf
May 31, 2025 - The HCUP State databases include the State Inpatient 
Databases (SID), State Ambulatory Surgery and Services … Risk of 
individual identification of persons is increased when observations (i.e., individual discharge … • I will not release or disclose information where the number of observations (i.e., individual discharge … • I will not attempt to link, and will prohibit others from attempting to link, the discharge records … state(s)
or data organization(s) that submitted data to HCUP, e.g., “state name(s), State Inpatient
                                     
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hcup-us.ahrq.gov/db/nation/nis/APS-DRGsV20DefinitionsManual.pdf
January 13, 2015 - Because these criteria were based on numerical standards derived 
from a sample of Medicare inpatient … claims, they had no particular validity in the 
context of other non-Medicare inpatient encounters. … Only the standard discharge data elements that 
hospitals already collect are needed. … Check that the patient's discharge status is a valid inpatient UB-92 
code. … Is discharge status in the range 01 - 08, 20, 30, 50, 51, 61 - 64, 71 
or 72?
                                     
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hcup-us.ahrq.gov/db/nation/nis/APS-DRGs%20V21%20Definitions%20Manual.pdf
January 13, 2015 - Because these criteria were based on numerical standards derived 
from a sample of Medicare inpatient … Only the standard discharge data elements that 
hospitals already collect are needed. … Check that the patient's discharge status is a valid inpatient UB-92 
code. … Is discharge status in the range 01 - 08, 20, 30, 43, 50, 51, 61 - 65? … Did the patient expire (i.e., discharge status equal to 20)? 
 
• If no, go to Step 7.
                                     
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hcup-us.ahrq.gov/db/vars/nis_stratum/nisnote.jsp
September 01, 2008 - Reports & Publications 
 
 
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 Home 
 
 
 About … HCUP Supplemental Files 
 NIS-Trend Weights Files 
 NIS Hospital Ownership Files 
 NIS 1993-2002 Discharge-Level … Reports Archive 
 
 
 
 
 
 
 
 DATA VISUALIZATIONS 
 
 
 
 
 
 DATA QUERY TOOLS … Prior to 1998, this data element was named STRATUM. … information about the NIS sampling design, see the year-specific report on the Design of the HCUP Nationwide Inpatient
                                     
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hcup-us.ahrq.gov/datainnovations/clinicaldata/AHRQHCUPfinalNov09BDiefenbach.jsp
April 09, 2011 - Adding Clinical Data Elements to Administrative Data … Reports & Publications 
 
 
 Data Visualizations 
 
 
 Data Query Tools 
 
 
 Home 
 
 
 About … HCUP Supplemental Files 
 NIS-Trend Weights Files 
 NIS Hospital Ownership Files 
 NIS 1993-2002 Discharge-Level … to the administrative data. … data, from April 1, 2007 to December 31, 2007, on all inpatients, for all laboratory tests conducted
                                     
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hcup-us.ahrq.gov/reports/factsandfigures/2009/exhibit2_5.jsp
January 01, 2009 - Database Information 
 
 
 
 Research Tools 
 
 
 Request Data … Reports & Publications 
 
 
 Data Visualizations 
 
 
 Data Query Tools 
 
 
 Home 
 
 
 About … HCUP Supplemental Files 
 NIS-Trend Weights Files 
 NIS Hospital Ownership Files 
 NIS 1993-2002 Discharge-Level … Reports Archive 
 
 
 
 
 
 
 
 DATA VISUALIZATIONS 
 
 
 
 
 
 DATA QUERY TOOLS … Center for Delivery, Organization, and Markets, Healthcare Cost and Utilization Project, Nationwide Inpatient
                                     
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hcup-us.ahrq.gov/db/vars/asourceub92/nisnote.jsp
September 01, 2008 - Reports & Publications 
 
 
 Data Visualizations 
 
 
 Data Query Tools 
 
 
 Home 
 
 
 About … HCUP Supplemental Files 
 NIS-Trend Weights Files 
 NIS Hospital Ownership Files 
 NIS 1993-2002 Discharge-Level … Reports Archive 
 
 
 
 
 
 
 
 DATA VISUALIZATIONS 
 
 
 
 
 
 DATA QUERY TOOLS … If the data source does not provide the admission source, then beginning in the 1998 data, ASOURCE is … ASOURCE_X (available beginning in 1998 data) retains the source of admission as provided by the data
                                     
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hcup-us.ahrq.gov/db/vars/asourceub92/kidnote.jsp
September 01, 2008 - Reports & Publications 
 
 
 Data Visualizations 
 
 
 Data Query Tools 
 
 
 Home 
 
 
 About … HCUP Supplemental Files 
 NIS-Trend Weights Files 
 NIS Hospital Ownership Files 
 NIS 1993-2002 Discharge-Level … Reports Archive 
 
 
 
 
 
 
 
 DATA VISUALIZATIONS 
 
 
 
 
 
 DATA QUERY TOOLS … If the data source does not provide the admission source, then beginning in the 1998 data, ASOURCE is … ASOURCE_X (available beginning in 1998 data) retains the source of admission as provided by the data
                                     
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hcup-us.ahrq.gov/datainnovations/clinicaldata/Hospital_Recruitment_Letter_VA.jsp
July 01, 2016 - Reports & Publications 
 
 
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 About … HCUP Supplemental Files 
 NIS-Trend Weights Files 
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 NIS 1993-2002 Discharge-Level … Reports Archive 
 
 
 
 
 
 
 
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 DATA QUERY TOOLS … to Administrative Data." … full clinical models in terms of discriminatory power for rating hospital performance on selected AHRQ Inpatient
                                     
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hcup-us.ahrq.gov/reports/statbriefs/sb119.pdf
August 01, 2011 - Please note, a discharge 
of this nature will be included in the NIS if it occurred in a community hospital … (inpatient, ambulatory surgery, and 
emergency department) in the United States, beginning in 1988. … HCUPnet generates statistics using data from HCUP's Nationwide Inpatient Sample (NIS), the 
10 … Kids' Inpatient Database (KID), the Nationwide Emergency Department Sample (NEDS), the State 
Inpatient … Final Report on Calculating Nationwide Inpatient Sample (NIS) Variances, 
2001.
                                     
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hcup-us.ahrq.gov/db/vars/dxn/kidnote.jsp
September 01, 2008 - HCUP Supplemental Files 
 NIS-Trend Weights Files 
 NIS Hospital Ownership Files 
 NIS 1993-2002 Discharge-Level … In the HCUP inpatient databases, the first listed diagnosis is the principal diagnosis defined as the … Diagnoses are compared to a list of ICD-9-CM codes valid for the discharge date. … the vector is packed during processing to remove blanks, the position of the E-code for a specific discharge … Nebraska 
 The Nebraska Hospital Association prohibits the release of discharge records for patients
                                     
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hcup-us.ahrq.gov/db/state/siddist/siddistvarnote1994.jsp
September 01, 2007 - Reports & Publications 
 
 
 Data Visualizations 
 
 
 Data Query Tools 
 
 
 Home 
 
 
 About … HCUP Supplemental Files 
 NIS-Trend Weights Files 
 NIS Hospital Ownership Files 
 NIS 1993-2002 Discharge-Level … Reports Archive 
 
 
 
 
 
 
 
 DATA VISUALIZATIONS 
 
 
 
 
 
 DATA QUERY TOOLS … Central Distributor SID: Availability of Data Elements 
 
   
 
 
			HCUP State Inpatient Databases … coding practices, click on the data element.
                                     
                                                                    - 
                                        
hcup-us.ahrq.gov/db/state/siddist/siddistvarnote1993.jsp
September 01, 2007 - Reports & Publications 
 
 
 Data Visualizations 
 
 
 Data Query Tools 
 
 
 Home 
 
 
 About … HCUP Supplemental Files 
 NIS-Trend Weights Files 
 NIS Hospital Ownership Files 
 NIS 1993-2002 Discharge-Level … Reports Archive 
 
 
 
 
 
 
 
 DATA VISUALIZATIONS 
 
 
 
 
 
 DATA QUERY TOOLS … Central Distributor SID: Availability of Data Elements 
 
   
 
 
			HCUP State Inpatient Databases … coding practices, click on the data element.