-
hcup-us.ahrq.gov/db/nation/nis/nistrends_filespecs.jsp
May 01, 2015 - 1993-2002 Nationwide Inpatient Sample (NIS) Supplemental Discharge-Level Files - File Specifications … Files
NIS Hospital Ownership Files
NIS 1993-2002 Discharge-Level Supplemental Files
KID-Trend File … 1993-2002 Nationwide Inpatient Sample (NIS) Supplemental Discharge-Level Files - File … Specifications
The following links include file specifications for the NIS Trends Supplemental … Internet Citation: 1993-2002 Nationwide Inpatient Sample (NIS) Supplemental Discharge-Level Files - File
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hcup-us.ahrq.gov/db/nation/nis/nissummstats.jsp
November 01, 2024 - 2022 Hospital Weights File (PDF file, 170 KB)
SumStats NIS 2022 Severity File (PDF file, 157 KB) … Weights V2 File (PDF file, 167 KB)
SumStats NIS 2020 Severity V2 File (PDF file, 153 KB)
SumStats … Weights File (PDF file, 168 KB)
SumStats NIS 2018 Severity File (PDF file, 154 KB)
SumStats NIS … Weights File (PDF file, 180 KB)
SumStats NIS 2016 Severity File (PDF file, 158 KB)
Return … 2014 DX_PR_Group File (PDF file, 140 KB)
SumStats NIS 2014 Hospital Weights File (PDF file, 180
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hcup-us.ahrq.gov/db/nation/neds/nedssummstats.jsp
November 01, 2024 - Contents:
2022 NEDS, CSV File
2021 NEDS, CSV File
2020 NEDS, CSV File
2019 NEDS, CSV File … 2018 NEDS, CSV File
2017 NEDS, CSV File
2016 NEDS, CSV File
2015 NEDS, CSV File
2014 NEDS, CSV … File
2013 NEDS, CSV File
2012 NEDS, CSV File
2011 NEDS, CSV File, Version 2
2011 NEDS, CSV File … 2022 ED File (PDF file, 156 KB)
SumStats NEDS 2022 IP File (PDF file, 423 KB)
Return … (PDF file, 274 KB)
SumStats NEDS 2021 Hospital File (PDF file, 173 KB)
SumStats NEDS 2021 ED File
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hcup-us.ahrq.gov/db/nation/nrd/nrdsummstats.jsp
December 01, 2024 - KB)
SumStats NRD 2021 Hospital File (PDF file, 141 KB)
SumStats NRD 2021 Severity File (PDF file … NRD 2019 Core V2 File, weighted (PDF file, 281 KB)
SumStats NRD 2019 Hospital V2 File (PDF file, … Hospital File (PDF file, 149 KB)
SumStats NRD 2018 Severity File (PDF file, 155 KB)
SumStats NRD … Core File, unweighted (PDF file, 312 KB)
SumStats NRD 2017 Core File, weighted (PDF file, 277 KB … )
SumStats NRD 2017 Hospital File (PDF file, 160 KB)
SumStats NRD 2017 Severity File (PDF file,
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hcup-us.ahrq.gov/db/ccr/ed-ccr/ed-ccr_archive.jsp
November 01, 2024 - Files
NIS Hospital Ownership Files
NIS 1993-2002 Discharge-Level Supplemental Files
KID-Trend File … , 338 KB)
User Guide: Cost-to-Charge Ratio for Emergency Department Files, 2012-2020 (PDF file, 309 … KB)
User Guide: Cost-to-Charge Ratio for Emergency Department Files, 2012-2019 (PDF file, 299 KB) … User Guide: Cost-to-Charge Ratio Files for SEDD, 2017 (PDF file, 206 KB)
User Guide: Cost-to-Charge … Ratio Files for SEDD, 2018 (PDF file, 162 KB)
Internet Citation: Archive
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hcup-us.ahrq.gov/db/nation/kid/kidsummarystats.jsp
December 01, 2024 - Hospital Weights File (PDF file, 178 KB)
Stats KID 2022 Severity File (PDF file, 154 KB)
Stats … File (PDF file, 194 KB)
Stats KID 2012 Severity File (PDF file, 226 KB)
Stats KID 2012 DX_PR Groups … file, 227 KB)
Stats KID 2009 Severity File (PDF file, 369 KB)
Stats KID 2009 DX_PR Groups File … Stats KID 2003 Core File (PDF file, 236 KB)
Stats KID 2003 Hospital Weights File (PDF file, … KID 2000 Core File (PDF file, 221 KB)
Stats KID 2000 Hospital Weights File (PDF file, 44 KB)
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hcup-us.ahrq.gov/db/state/sasddist/sasd_multi.jsp
August 01, 2025 - HCUP State Ambulatory Surgery and Services Databases (SASD) File Composition … Files
NIS Hospital Ownership Files
NIS 1993-2002 Discharge-Level Supplemental Files
KID-Trend File … DATA QUERY TOOLS
HCUP State Ambulatory Surgery and Services Databases (SASD) File … Composition
HCUP State Ambulatory Surgery and Services Databases (SASD) File Composition … and then click the "View File Composition" button.
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hcup-us.ahrq.gov/db/nation/nass/nasssummstats.jsp
December 01, 2024 - File, unweighted (PDF file, 234 KB)
Encounter File, weighted (PDF file, 235 KB)
Hospital File … (PDF file, 224 KB)
Hospital File (PDF file, 131 KB)
Supplemental File (PDF file, 166 KB)
Diagnosis … Encounter File, unweighted (PDF file, 261 KB)
Encounter File, weighted (PDF file, 262 KB)
Hospital … Encounter File, unweighted (PDF file, 261 KB)
Encounter File, weighted (PDF file, 262 KB) … Hospital File (PDF file, 120 KB)
Supplemental File (PDF file, 201 KB)
Return to Contents
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hcup-us.ahrq.gov/db/state/ahalinkage/aha_linkage.jsp
November 01, 2019 - Files
NIS Hospital Ownership Files
NIS 1993-2002 Discharge-Level Supplemental Files
KID-Trend File … The HCUP AHA Linkage file is a hospital-level file with one observation per hospital or facility. … To combine HCUP discharge-level files with the AHA Linkage file, merge the files by the hospital identifier … For example, the HCUP Core file may contain 5,000 discharges for DSHOSPID "A", but the AHA Linkage file
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hcup-us.ahrq.gov/db/nation/nis/trendwghts.jsp
June 01, 2024 - ASCII weights file (SPSS file, 2 KB)
Stata Load Program (Stata file, 2 KB)
1994
File … Program (Stata file, 2 KB)
1995
File layout (TXT file, 1 KB)
ASCII file with weights … ASCII weights file (SPSS file, 2 KB)
Stata Load Program (Stata file, 2 KB)
1996
File … Program (Stata file, 2 KB)
1997
File layout (TXT file, 1 KB)
ASCII file with weights … ASCII weights file (SPSS file, 2 KB)
Stata Load Program (Stata file, 2 KB)
1998
File
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hcup-us.ahrq.gov/reports/methods/methods_topic.jsp
November 01, 2024 - -01
2005 Report (PDF file, 389 KB)
Report #2007-03
2004 Report (PDF file, 441 KB) … file, 644 KB)
Report #2004-04
2001 Report (PDF file, 1,076 KB)
Report #2003-01 … 2000 Report (PDF file, 991 KB)
Report #2002-02
1999 Report (PDF file, 1,117 KB) … Report #2000-01
1997 Report (PDF file, 340 KB)
Report #1998-01
1995 Report (PDF file, 284 … , 488 KB)
Supplement 1-2 (PDF file, 546 KB)
Supplement 3 ( PDF file, 301 KB; Excel file, 54
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hcup-us.ahrq.gov/db/nation/nis/nisrelatedreports.jsp
February 01, 2025 - (PDF file, 991 KB)
1999 (PDF file, 1,117 KB)
1997 (PDF file, 340 KB)
1995 (PDF file, 284 KB … 2022 (PDF file, 113 KB)
2021 (PDF file, 112 KB)
2020 (PDF file, 109 KB)
2019 (PDF file, 111 … file, 115 KB)
2010 (PDF file, 115 KB)
2009 (PDF file, 116 KB)
2008 (PDF file, 116 KB)
2007 … (PDF file, 116 KB)
2006 (PDF file, 12 KB)
2005 (PDF file, 12 KB)
2004 (PDF file, 11 KB) … 2003 (PDF file, 6 KB)
2002 (PDF file, 10 KB)
2001 (PDF file, 10 KB)
2000 (PDF file, 10 KB)
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hcup-us.ahrq.gov/db/nation/nis/nisarchive.jsp
February 01, 2025 - , 507 KB)
1996 (PDF file, 449 KB)
1995 (PDF file, 394 KB)
1994 (PDF file, 393 KB)
1993 (PDF … 2005 ( HTML )
2004 ( HTML )
2003 ( HTML )
2002 (PDF file, 160 KB)
2001 (PDF file, 279 … KB)
2000 (PDF file, 260 KB)
1999 (PDF file, 34 KB)
1998 (PDF file, 32 KB)
1988-1997 (PDF … 2004 NIS (PDF file, 460 KB)
2003 NIS (PDF file, 565 KB)
2002 NIS (PDF file, 552 KB)
2001 … NIS (PDF file, 469 KB)
2000 NIS (PDF file, 152 KB), this file also applies to the 1998 and 1999 NIS
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hcup-us.ahrq.gov/reports/methods/methods.jsp
February 01, 2025 - , 632 KB)
Supplements 1-3 ( PDF file, 1.02 MB)
Report #2022-03
Population … , 680 KB)
Appendix ( Excel file, 292 KB)
2021
Report #2021-01
User … , 657 KB; HTML )
Supplements 1-3 ( PDF file, 1.0 MB; HTML )
Report #2021-02 … , 488 KB)
Supplements 1-2 (PDF file, 546 KB)
Supplement 3 ( PDF file, 301 KB; Excel file, … Supplement 4 ( PDF file, 502 KB; Excel file, 156 KB)
Report #2014-04
Nationwide
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hcup-us.ahrq.gov/reports/trendtables/summarytrendtables.jsp
May 01, 2025 - Files
NIS Hospital Ownership Files
NIS 1993-2002 Discharge-Level Supplemental Files
KID-Trend File … , 43 KB)
Change log (Excel file, 65 KB)
For each type of inpatient stay, there is an Excel file … Also included in each Excel file is a description of the HCUP databases and methodology. … A ZIP folder with all tables is also available for download (ZIP file, 81.2 MB). … All Inpatient Encounter Types: Trends in the Number of Discharges (Excel file, 3.0 MB)
Table 2b.
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hcup-us.ahrq.gov/db/state/siddist/Introduction_to_SID.pdf
January 01, 2025 - • Charges file
• AHA Linkage file
• Diagnosis and Procedure Groups file
The Core file is a discharge-level … • Charges file
• AHA Linkage file
Unavailable with the 2016–2018 SID are two file types that had been … (one file because this is a hospital-level file, instead of a discharge-level file)
• Diagnosis and … • Charges file
• AHA Linkage file
• Diagnosis and Procedure Groups file
• Disease Severity Measures … • Charges file
• AHA Linkage file
The Core file is a discharge-level file that contains:
• Core data
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hcup-us.ahrq.gov/db/state/sasddist/Introduction_to_SASD.pdf
January 01, 2025 - • Charges file
• AHA Linkage file
• Diagnosis and Procedure Groups file
The Core file is an encounter-level … (one file because this is a hospital-level file, instead of an encounter-level
file)
• Diagnosis … • Charges file
• AHA Linkage file
• Diagnosis and Procedure Groups file
The Core file is an encounter-level … • Charges file
• AHA Linkage file
The Core file is an encounter-level file that contains: … • State-specific file
• AHA Linkage file
The Core file contains core data elements that form
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hcup-us.ahrq.gov/db/state/sedddist/Introduction_to_SEDD.pdf
January 01, 2025 - • Charges file
• AHA Linkage file
• Diagnosis and Procedure Groups file
The Core file is a discharge-level … The AHA Linkage file is a hospital-level file with one observation per hospital or facility. … (one file because this is a hospital-level file, instead of a discharge-level file)
• Diagnosis and … • Charges file
• AHA Linkage file
• Diagnosis and Procedure Groups file
The Core file is a discharge-level … • Charges file
• AHA Linkage file
The Core file is a discharge-level file that contains:
•
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hcup-us.ahrq.gov/toolssoftware/surgeryflags_svcproc/surgeryflagssvc_proc_downloading.jsp
June 18, 2025 - Surgery Flags Software for Services and Procedures, v2025.1 (ZIP file,
408 KB) released 06/ … Surgery Flags Software for Services and Procedures, v2024.1 (ZIP file,
328 KB) released 07/ … The ZIP folder includes the CSV mapping file. … This file does not have an accompanying program. … Surgery Flags Software for Services and Procedures, v2019.1 (ZIP file,
14 KB)
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hcup-us.ahrq.gov/toolssoftware/ccsr/ccsr_archive.jsp
November 01, 2024 - Files
NIS Hospital Ownership Files
NIS 1993-2002 Discharge-Level Supplemental Files
KID-Trend File … , 3.5 MB) released 03/06/24
Change Log v2023.1 to v2024.1 (Excel file, 63.9 KB)
CCSR 2023.1 … , 5.5 MB) released 12/8/22
Change Log v2022.1 to v2023.1 (Excel file, 1.7 MB)
CCSR v2022.1 : … , 4.8 MB) released 10/28/21
Change Log v2021.2 to v2022.1 (Excel file, 1.3 MB)
CCSR v2021.2 … , 4.1 MB) released 3/5/21
Change Log v2021.1 to v2021.2 (Excel file, 123 KB)
CCSR v2021.1 :