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hcup-us.ahrq.gov/db/nation/nis/tools/stats/FileSpecifications_NIS_2018_Core.TXT
January 01, 2018 - Data Set Name: NIS_2018_CORE
Number of Observations: 7105498
Total Record Length:
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hcup-us.ahrq.gov/db/nation/nis/tools/stats/FileSpecifications_NIS_2008_Core.TXT
January 01, 2008 - Data Set Name: NIS_2008_CORE
Number of Observations: 8158381
Total Record Length: … 2008 Core 25 DX6 93 97 Char Diagnosis 6
NIS 2008 Core … NIS 2008 Core 30 DX11 118 122 Char Diagnosis 11
NIS 2008 Core … Core 58 E_CCS4 222 225 Num CCS: E Code 4
NIS 2008 Core … NIS 2008 Core 93 PR11 363 366 Char Procedure 11
NIS 2008 Core
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hcup-us.ahrq.gov/db/nation/kid/tools/stats/FileSpecifications_KID_2012_Core.TXT
January 01, 2012 - Data Set Name: KID_2012_CORE
Number of Observations: 3195782
Total Record Length: … KID 2012 Core 28 DX14 116 120 Char Diagnosis 14
KID 2012 Core … KID 2012 Core 34 DX20 146 150 Char Diagnosis 20
KID 2012 Core … 2012 Core 57 DXCCS18 227 229 Num CCS: diagnosis 18
KID 2012 Core … 25
KID 2012 Core 65 ECODE1 251 255 Char E code 1
KID 2012 Core
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hcup-us.ahrq.gov/db/nation/nis/tools/stats/FileSpecifications_NIS_2011_Core.TXT
January 01, 2011 - Data Set Name: NIS_2011_CORE
Number of Observations: 8023590
Total Record Length … NIS 2011 Core 25 DX6 93 97 Char Diagnosis 6
NIS 2011 Core … NIS 2011 Core 31 DX12 123 127 Char Diagnosis 12
NIS 2011 Core … NIS 2011 Core 37 DX18 153 157 Char Diagnosis 18
NIS 2011 Core … 2011 Core 52 DXCCS8 214 216 Num CCS: diagnosis 8
NIS 2011 Core
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hcup-us.ahrq.gov/db/nation/nis/tools/stats/FileSpecifications_NIS_2014_Core.TXT
January 01, 2014 - Data Set Name: NIS_2014_CORE
Number of Observations: 7071762
Total Record Length: … NIS 2014 Core 26 DX14 103 107 Char Diagnosis 14
NIS 2014 Core … NIS 2014 Core 32 DX20 133 137 Char Diagnosis 20
NIS 2014 Core … NIS 2014 Core 38 DX26 163 167 Char Diagnosis 26
NIS 2014 Core … 2014 Core 61 DXCCS19 242 244 Num CCS: diagnosis 19
NIS 2014 Core
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hcup-us.ahrq.gov/db/nation/nis/tools/stats/FileSpecifications_NIS_2010_Core.TXT
January 01, 2010 - Data Set Name: NIS_2010_CORE
Number of Observations: 7800441
Total Record Length: … NIS 2010 Core 30 DX11 119 123 Char Diagnosis 11
NIS 2010 Core … NIS 2010 Core 36 DX17 149 153 Char Diagnosis 17
NIS 2010 Core … NIS 2010 Core 42 DX23 179 183 Char Diagnosis 23
NIS 2010 Core … 2010 Core 58 DXCCS14 233 235 Num CCS: diagnosis 14
NIS 2010 Core
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hcup-us.ahrq.gov/db/nation/nrd/stats/FileSpecifications_NRD_2012_Core_V2.TXT
January 01, 2012 - Data Set Name: NRD_2012_CORE_V2
Created on 09/28/2017
Number of Observations: 13459216
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hcup-us.ahrq.gov/db/nation/nrd/stats/FileSpecifications_NRD_2011_Core_V2.TXT
January 01, 2011 - Data Set Name: NRD_2011_CORE_V2
Created on 09/28/2017
Number of Observations: 13915176
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hcup-us.ahrq.gov/db/nation/nrd/stats/FileSpecifications_NRD_2010_Core_V2.TXT
January 01, 2010 - Data Set Name: NRD_2010_CORE_V2
Created on 09/28/2017
Number of Observations: 13907610
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hcup-us.ahrq.gov/db/nation/nis/tools/stats/FileSpecifications_NIS_2009_Core.TXT
January 01, 2009 - Data Set Name: NIS_2009_CORE
Number of Observations: 7810762
Total Record Length: … NIS 2009 Core 30 DX11 118 122 Char Diagnosis 11
NIS 2009 Core … NIS 2009 Core 36 DX17 148 152 Char Diagnosis 17
NIS 2009 Core … NIS 2009 Core 42 DX23 178 182 Char Diagnosis 23
NIS 2009 Core … 2009 Core 58 DXCCS14 232 234 Num CCS: diagnosis 14
NIS 2009 Core
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hcup-us.ahrq.gov/db/nation/kid/tools/stats/FileSpecifications_KID_2009_Core.TXT
January 01, 2009 - Data Set Name: KID_2009_CORE
Number of Observations: 3407146
Total Record Length: … KID 2009 Core 38 DX15 158 162 Char Diagnosis 15
KID 2009 Core … KID 2009 Core 44 DX21 188 192 Char Diagnosis 21
KID 2009 Core … 2009 Core 67 DXCCS19 267 269 Num CCS: diagnosis 19
KID 2009 Core … KID 2009 Core 116 PR11 446 449 Char Procedure 11
KID 2009 Core
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hcup-us.ahrq.gov/db/nation/nrd/stats/FileSpecifications_NRD_2019_Core_V2.TXT
January 01, 2019 - Data Set Name: NRD_2019_CORE
Created on 11/30/2022
Number of Observations: 18132856
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hcup-us.ahrq.gov/db/nation/nis/tools/stats/D_FILESP_1997.PDF
January 01, 1997 - HCUP FILE SPECIFICATIONS
NATIONWIDE INPATIENT SAMPLE (NIS), RELEASE 6, 1997
Year Description Data Set … Name Records Length Bytes
Number of Record Number of
1997
Full NIS, Inpatient Stay Core File A NIS97 … Full NIS, Inpatient Stay Core File C NIS97_C.ASC 7,148,420 65 478,944,140
Full NIS, Core File DX ( … 19 215,523,441
Hospital Weights File NIS97WT.ASC 1,012 251 256,036
Inpatient Stay Subsample 1
Core … 2
Core File (A/B/C) N97S2ABC.ASC 714,842 225 162,269,134
Core File DX (diagnoses) N97S2_DX.ASC 3,387,234
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hcup-us.ahrq.gov/db/nation/nis/UserGuideNISSupplementalDischarge-LevelFiles20150526.pdf
May 01, 2015 - are set to “incn.” … Set to “incn” if PRV = .C. x x x x x
PRCCS1 Renamed PCCHPR1
Set to .A if PRVn = 1
Set to .C … files to produce a dataset containing the complete set of variables from both sources. … Core A, Core B, Dx, Pr, etc.) The provided
SAS programs will accept only a single input Core file. … Core A, Core B, Dx, Pr, etc.)
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hcup-us.ahrq.gov/db/nation/nis/tools/stats/FileSpecifications_NIS_2019_Core_V2.TXT
January 01, 2019 - Data Set Name: NIS_2019_CORE
Number of Observations: 7083805
Total Record Length
-
hcup-us.ahrq.gov/db/nation/nis/tools/stats/FileSpecifications_NIS_2020_Core_V2.TXT
January 01, 2020 - Data Set Name: NIS_2020_CORE
Number of Observations: 6471165
Total Record Length
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hcup-us.ahrq.gov/db/nation/kid/tools/stats/FileSpecifications_KID_2019_Core_V2.TXT
January 01, 2019 - Data Set Name: KID_2019_CORE
Number of Observations: 3089283
Total Record Length
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hcup-us.ahrq.gov/db/nation/kid/corrections2003.jsp
May 01, 2008 - Inpatient Database (KID) - 2003 Please refer to the information below for corrections to the KID data set … Correction to 2003 KID Core File, KID_STRATUM
In the 2003 KID Core File, KID_STRATUM values of 9999
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hcup-us.ahrq.gov/seddoverview.jsp
January 01, 2025 - The SEDD contain a core set of clinical and nonclinical information on all patients, including individuals … In addition to the core set of uniform data elements common to all SEDD, some State data include other … of the 2015 data with ICD-9-CM codes (discharges from Jan 1, 2015 - September 30, 2015) are in one set … toll free)
Return to Contents
SEDD Hardware and Software Requirements
The SEDD data set … available, depending on the SID being used
SAS®, SPSS®, or similar analysis software
The data set
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hcup-us.ahrq.gov/db/nation/kid/KID_2003_CORE_Volume2_M-Z.pdf
January 01, 2003 - Healthcare Cost and Utilization Project (HCUP) KID Description of Data Elements - Core Notes … Description of Data Elements
Kids' Inpatient Database (KID)
Core File
2003
Volume … Not all data elements in the KID Core file are uniformly coded across
states. … to 1 Set to inconsistent (.C)
PCCHPRn Set to invalid (.A). … RECNUM can be used to link the KID Core and Severity Measures file.