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hcup-us.ahrq.gov/db/vars/ndx/nisnote.jsp
September 01, 2008 - Reports & Publications
Data Visualizations
Data Query Tools
Home
About … NIS Description of Data Elements
NDX - Number of ICD-9-CM diagnoses on this discharge … A maximum of 15 diagnoses has been retained on a NIS inpatient record. … If an inpatient record from these states had more than 15 non-missing diagnoses, diagnoses in positions … of diagnoses available on the inpatient record, caution needs to be taken when using NDX to loop through
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www.ahrq.gov/sites/default/files/wysiwyg/professionals/quality-patient-safety/patient-safety-resources/resources/advances-in-patient-safety/vol2/Gallagher2.pdf
January 01, 2016 - hospital discharge
abstract data; the specific data elements required by the PSI algorithms are
available … This
study uses only data from a New York hospital discharge administrative database,
which is capable … Methods
Data source
This is a descriptive study, based on New York’s 2001 inpatient discharge
database … Because New York State inpatient discharge data contains unique
patient identifiers, we were able to … Caton for her initial examination of New York State discharge
data.
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hcup-us.ahrq.gov/db/nation/nis/reports/NISRedesignFinalReport040914.pdf
June 11, 2014 - The frame is limited by the availability of inpatient data from the data sources currently
participating … 2010 Data 2011 Data
Exclude LTAC Hospitals
Use AHA
Discharge
Counts Use SID Discharge Counts … 2010 Data 2011 Data
Exclude LTAC Hospitals
Use AHA
Discharge
Counts
Use SID Discharge
Counts … 2010 Data 2011 Data
Exclude LTAC Hospitals
Use AHA
Discharge
Counts Use SID Discharge Counts … Data Elements in the NIS Inpatient Core Files
Data elements that are italicized are not included in
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hcup-us.ahrq.gov/db/nation/nis/2006NIS_INTRODUCTION.pdf
November 01, 2015 - INTRODUCTION TO THE HCUP NATIONWIDE INPATIENT SAMPLE (NIS)
Overview of NIS Data
The Nationwide Inpatient … NIS Data Sources, Hospitals, and Inpatient Stays
Table 4 in Appendix I contains a summary of the data … Core File: This inpatient discharge-level file contains data for 100% of the
discharges from a sample … Summary of NIS Data Sources, Hospitals, and Inpatient Stays, 1988-2006
Year Data sources
Number … Data Elements in the NIS Inpatient Core Files
Data elements that are italicized are not included in
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hcup-us.ahrq.gov/news/newsletters/newsltrQ3_2016.html
January 01, 2016 - The District of Columbia has released their State Inpatient Databases (SID) for the 2013 and 2014 data … In order to facilitate analysis of trends using multiple years of NIS data, AHRQ developed new discharge … use a combination of the trend weight (TRENDWT) and the original discharge weight (DISCWT), depending … When combining multiple years of data, the NIS data element discharge year ( YEAR ) should be added as … Each NIS sample is drawn from the sampling frame consisting of discharge data submitted by HCUP Partners—statewide
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www.ahrq.gov/sites/default/files/wysiwyg/professionals/quality-patient-safety/patient-safety-resources/resources/advances-in-patient-safety/vol1/Campbell.pdf
January 01, 2003 - It would use all of the VHA
hospital discharge data and, for the first time, track and trend patient … Selected variables from all of the VHA hospital inpatient discharge datasets
for 5 fiscal years ( … AAC, Medical Inpatient SAS
datasets.)23 This produced a discharge dataset with more than 2.8 million … The national average inpatient discharge costs by fiscal year for
each CCS category of injury were used … Consensus
recommendations for using hospital discharge data for
injury surveillance.
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hcup-us.ahrq.gov/db/nation/nis/NISIntroduction2010.pdf
November 01, 2015 - INTRODUCTION TO THE HCUP NATIONWIDE INPATIENT SAMPLE (NIS)
Overview of NIS Data
The Nationwide Inpatient … NIS Data Sources, Hospitals, and Inpatient Stays
Table 4 in Appendix I contains a summary of the data … The 2010 NIS includes the following compressed files:
Inpatient Core File: This inpatient discharge-level … Summary of NIS Data Sources, Hospitals, and Inpatient Stays, 1988-2010
Year Data Sources
Number … Data Elements in the NIS Inpatient Core Files
Data elements that are italicized are not included in
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hcup-us.ahrq.gov/db/nation/nis/NIS_Introduction_2011.pdf
January 01, 2011 - INTRODUCTION TO THE HCUP NATIONWIDE INPATIENT SAMPLE (NIS)
Overview of NIS Data
The Nationwide Inpatient … NIS Data Sources, Hospitals, and Inpatient Stays
Table 4 in Appendix I contains a summary of the data … The 2011 NIS includes the following compressed files:
Inpatient Core File: This inpatient discharge-level … Summary of NIS Data Sources, Hospitals, and Inpatient Stays, 1988-2011
Year Data Sources
Number … Data Elements in the NIS Inpatient Core Files
Data elements that are italicized are not included in
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hcup-us.ahrq.gov/news/exhibit_booth/SIDBrochure_050218.pdf
May 16, 2018 - The State Inpatient Databases (SID) are part of
the family of databases and software tools
developed … A Comprehensive, User-Friendly Resource
Each participating State's SID includes inpatient discharge records … age, and (for some States) race
• Total charges
• Expected payer
• Length of stay
• Admission and discharge … organizations – such as State
data organizations, hospital associations, private data organizations, … Expand Your Analyses
Link to Other Data.
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hcup-us.ahrq.gov/db/nation/nis/NIS_2009_INTRODUCTION.pdf
January 01, 2009 - INTRODUCTION TO THE HCUP NATIONWIDE INPATIENT SAMPLE (NIS)
Overview of NIS Data
The Nationwide Inpatient … NIS Data Sources, Hospitals, and Inpatient Stays
Table 4 in Appendix I contains a summary of the data … It includes the following files:
Inpatient Core File: This inpatient discharge-level file contains … Summary of NIS Data Sources, Hospitals, and Inpatient Stays, 1988-2009
Year Data Sources
Number … Data Elements in the NIS Inpatient Core Files
Data elements that are italicized are not included in
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www.ahrq.gov/ncepcr/care/coordination/atlas/chapter6s.html
June 01, 2014 - Source: This process measure requires administrative claims data and/or data collected from the medical … Data from clinical registries may also be used, if available (e.g., National Cardiovascular Data Registry … Source: Electronic claims data. … measure requires administrative claims data and data collected from the medical record. 1
Date: Measure … Medication List Received by Discharged Patients; and Measure #59, Timely Transmission of Transition Record - Inpatients
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hcup-us.ahrq.gov/db/vars/s_disc_u/nassnote.jsp
August 01, 2019 - 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 … S_DISC_U differs by HCUP database:
For the NIS prior to 2012, S_DISC_U contains the total number of inpatient … For the NIS beginning in 2012, S_DISC_U contains the total number of inpatient discharges for the stratum … For the NRD, S_DISC_U contains the total number of inpatient discharges for the stratum.
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hcup-us.ahrq.gov/db/nation/nis/NIS_1999_HOSPITAL.pdf
January 01, 1999 - http://172.16.18.243/db/nation/nis/nishospnotes.jsp
Description of Data Elements
Nationwide Inpatient … years of HCUP data from 1988 to the current data year. … For detailed
information about the development and use of discharge and hospital weights, see the year-specific … The data element AHAID retains the original 7-digit value. … In the 1988-1997 HCUP databases, YEAR is two-digits (e.g., if
the discharge year is 1990, then YEAR
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hcup-us.ahrq.gov/db/nation/kid/KID_2006_Introduction.pdf
January 01, 2006 - data sources, number of hospitals, and
number of inpatient stays in each KID database. … See Table 1 of Appendix III for a list
of data elements in the Inpatient Core File. … The name of the discharge weight data element depends on the
year of data and the type of analysis. … Data Elements in the KID Inpatient Core File
Note: Not all data elements in the KID are uniformly … in
2006 for:
DQTR_X 2006 Discharge quarter, as received from
data source
Discharge weights DISCWT
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datatools.ahrq.gov/hcup-fast-stats/wp-content/uploads/sites/3/2025/01/FSNationalTrendsInpatientStays-dy22Deliverable-27Jan2025-1.xlsx
January 01, 2025 - Data Notes & Methods
Inpatient Stays
The national estimates are drawn from the HCUP National (Nationwide … Unit of Analysis
The unit of analysis in the NIS is the hospital discharge (i.e., the inpatient stay … Counts are summarized by discharge year. … Costs are not imputed if total charges are not reported on the discharge record. … It is calculated by subtracting the admission date from the discharge date.
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hcup-us.ahrq.gov/reports/statbriefs/sb56.pdf
July 01, 2008 - This Statistical Brief presents data from the Healthcare Cost and
Utilization Project’s Kids’ Inpatient … Data Source
The estimates in this Statistical Brief are based on data from HCUP’s Kids’ Inpatient … Discharge status
Discharge status indicates the disposition of the patient at discharge from the hospital … organizations—such as State data
organizations, hospital associations, private data organizations, … HCUPnet generates statistics using data from HCUP's Nationwide Inpatient Sample
(NIS), the Kids' Inpatient
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datatools.ahrq.gov/hcup-fast-stats/wp-content/uploads/sites/3/2024/04/FSNationalTrendsInpatientStays-dy21Deliverable-08Apr2024.xlsx
January 01, 2024 - Data Notes & Methods
Inpatient Stays
The national estimates are drawn from the HCUP National (Nationwide … Unit of Analysis
The unit of analysis in the NIS is the hospital discharge (i.e., the inpatient stay … Counts are summarized by discharge year. … Costs are not imputed if total charges are not reported on the discharge record. … It is calculated by subtracting the admission date from the discharge date.
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hcup-us.ahrq.gov/reports/methods/2014-03.pdf
January 01, 2014 - Databases (SID), which include the universe of the
inpatient discharge abstracts in participating States … The second study16 linked hospital discharge data with health benefits data for a large employer in … Assessing the validity of insurance coverage data in hospital discharge
records: California OSHPD data … the universe of the inpatient discharge abstracts in participating States. … CHIP is often not coded in the HCUP discharge data.
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hcup-us.ahrq.gov/reports/factsandfigures/2007/highlightsV2.jsp
January 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 … This report includes information from the 2007 database containing discharge records for all patients … Costs per discharge increased by 3.1 percent annually.
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hcup-us.ahrq.gov/news/exhibit_booth/hcup_fact_sheet.jsp
April 01, 2022 - HCUP Supplemental Files
NIS-Trend Weights Files
NIS Hospital Ownership Files
NIS 1993-2002 Discharge-Level … HCUP Partners States
49 provide statewide inpatient data (AK, AR, AZ, CA, CO, CT, DC, DE, FL, … The inpatient data contained in the NIS represent more than 97 percent of inpatient
discharges … The State Inpatient Databases (SID) contain a powerful collection of hospital inpatient discharge … The State Emergency Department Databases (SEDD) contain discharge information on all ED
visits