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hcup-us.ahrq.gov/db/tools/HCUP_Formats.TXT
December 28, 2023 - /* =============================================================================
Program : HCUP_Formats.txt …
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hcup-us.ahrq.gov/figures/nis_figure4_2008.jsp
January 01, 2008 - 89
88
26
Wisconsin
132
130
30
West Virginia
56
56
15
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hcup-us.ahrq.gov/figures/4_01.jsp
64
18
98.5%
CA
380
375
94
98.7%
AZ
58
56
12
96.6%
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hcup-us.ahrq.gov/figures/nis_figure2_2021.jsp
January 01, 2021 - return to report
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hcup-us.ahrq.gov/toolssoftware/ccsr/prccsr.jsp
July 01, 2025 - For example, the seven ICD-10-PCS codes needed to report a Whipple procedure are included in six different
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hcup-us.ahrq.gov/figures/4_02.jsp
31
8
88.6%
CO
66
65
20
98.5%
CA
379
374
97
98.7%
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hcup-us.ahrq.gov/figures/nis_figure4_2009.jsp
January 01, 2009 - 30
99.2%
130
West Virginia
17
100%
55
Wyoming
6
88.5%
26
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hcup-us.ahrq.gov/db/nation/nis/SC-Ecode-NIS2000-ErrataSheet.pdf
May 23, 2017 - Nationwide Inpatient Sample (NIS)
2000
Errata Sheet
In the 2000 Nationwide Inpatient Sample, 6,248 discharges from South Carolina are
missing external cause of injury codes (E Codes). No other NIS records are affected.
An ASCII file containing the missing information is available. The separate E Code fil…
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hcup-us.ahrq.gov/db/nation/nrd/LimitationsonUsingtheNRD.pdf
December 25, 2022 - LimitationsonUsingNRD
Limitations on Using the Nationwide Readmissions Database (NRD)
Consider Each Year of the NRD as a Separate Sample
The patient linkage numbers (NRD_VisitLink) do not track the same patient across years of the
NRD. Additionally, the hospital identifiers (HOSP_NRD) do not track the sampled ho…
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hcup-us.ahrq.gov/db/nation/nis/NIS96_Overview_122104.pdf
November 01, 2015 - Will acknowledge in reports that data from the "Healthcare Cost and Utilization Project
(HCUP)" … Publications
HCUP Research Notes report aggregate statistics and detailed analyses using HCUP data
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hcup-us.ahrq.gov/figures/4_03.jsp
66
65
19
98%
CA
367
361
87
98%
AZ
59
58
13
98%
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hcup-us.ahrq.gov/figures/4_05.jsp
87 (98.9%)
25
WI
131
127 (96.9%)
32
WV
55
55 (100.0%)
18
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hcup-us.ahrq.gov/figures/4_04.jsp
84 (98.8%)
25
WI
125
124 (99.2%)
28
WV
55
55 (100.0%)
19
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hcup-us.ahrq.gov/db/nation/kid/kid_statelevelestimates.jsp
February 01, 2022 - "Can I use older years of the KID that include State identifiers to do State-level estimates?"
AHRQ strongly advises researchers against using the KID to estimate State-specific statistics. Prior to 2012, State is available as a KID data element. However, these KID samples were not designed to yield a representativ…
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hcup-us.ahrq.gov/db/nation/neds/stats/FileSpecifications_NEDS_2019_Core.TXT
January 01, 2019 - Data Set Name: NEDS_2019_CORE
Number of Observations: 33147251
Total Number of Data Elements: 73
Columns Description
======== ===========
1 - 4 Database name
6 - 9 Discharge year of data
11 - 21 File name
23 - 25 Data element number
27 - 45 Data element name
47 …
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hcup-us.ahrq.gov/db/nation/neds/stats/FileSpecifications_NEDS_2020_Core.TXT
January 01, 2020 - Data Set Name: NEDS_2020_CORE
Number of Observations: 28037034
Total Number of Data Elements: 73
Columns Description
======== ===========
1 - 4 Database name
6 - 9 Discharge year of data
11 - 21 File name
23 - 25 Data element number
27 - 45 Data element name…
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hcup-us.ahrq.gov/db/nation/neds/stats/FileSpecifications_NEDS_2018_Core.TXT
January 01, 2018 - Data Set Name: NEDS_2018_CORE
Number of Observations: 35807950
Total Number of Data Elements: 72
Columns Description
======== ===========
1 - 4 Database name
6 - 9 Discharge year of data
11 - 21 File name
23 - 25 Data element number
27 - 45 Data element name
47 …
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hcup-us.ahrq.gov/db/nation/nis/nis_statelevelestimates.jsp
January 01, 2016 - "Can I use older years of the NIS that include State identifiers to do State-level estimates?"
AHRQ strongly advises researchers against using the NIS to estimate State-specific statistics. Prior to 2012, State is available as a NIS data element. However, these NIS samples were not designed to yield a representat…
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hcup-us.ahrq.gov/figures/nis_figure4_2010.jsp
January 01, 2010 - Virginia
14 (26.4%)
53 (100%)
53
Wyoming
6 (23.1%)
23 (88.5%)
26
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hcup-us.ahrq.gov/figures/nis_figure4_2013.jsp
January 01, 2013 - 131
WV
9 (17.3%)
52 (100.0%)
52
WY
7 (25.9%)
24 (88.9%)
27
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