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hcup-us.ahrq.gov/ahalinkage/ahalinkage_search.jsp
August 01, 2025 - American Hospital Association Linkage Files
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hcup-us.ahrq.gov/db/vars/apsdrg/nisnote.jsp
September 01, 2008 - Healthcare Cost and Utilization Project (HCUP) NIS Notes
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hcup-us.ahrq.gov/db/vars/ahaid/nisnote.jsp
September 01, 2008 - Healthcare Cost and Utilization Project (HCUP) NIS Notes
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hcup-us.ahrq.gov/db/vars/hosp_teach/nisnote.jsp
September 01, 2008 - Healthcare Cost and Utilization Project (HCUP) NIS Notes
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hcup-us.ahrq.gov/db/vars/h_contrl/nisnote.jsp
September 01, 2008 - Healthcare Cost and Utilization Project (HCUP) NIS Notes
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hcup-us.ahrq.gov/db/vars/h_region/nisnote.jsp
September 01, 2008 - Healthcare Cost and Utilization Project (HCUP) NIS Notes
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hcup-us.ahrq.gov/db/nation/kid/kidtrends.jsp
June 01, 2015 - KID Trend Weights File
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hcup-us.ahrq.gov/db/ccr/costtocharge.jsp
November 01, 2021 - Cost-to-Charge Ratio Files
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hcup-us.ahrq.gov/db/nation/sasloadprog.jsp
December 01, 2024 - HCUP Central Distributor SAS Load Programs - Nationwide
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hcup-us.ahrq.gov/filespecs/filespecs_search.jsp
August 01, 2025 - HCUP-US Central Distributor File Specifications
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hcup-us.ahrq.gov/stataload/stataload_search.jsp
August 01, 2025 - HCUP-US Central Distributor Stata Load Programs
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hcup-us.ahrq.gov/db/nation/nass/nassrefinements2019.jsp
October 18, 2021 - 2019 NASS Refinements
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hcup-us.ahrq.gov/db/nation/nis/tools/stats/SummaryStats_NIS_2001_Quality_Report.PDF
January 01, 2001 - Any DX edit 0.04 3,248
EDX01 : Missing principal diagnosis 0.03 1,883
EDX02 : Invalid diagnosis code … for DRG
assignment
0.00 58
Procedures EPR : Any PR edit 0.06 4,655
EPR02 : Invalid procedure code
-
hcup-us.ahrq.gov/db/nation/nis/tools/stats/SummaryStats_NIS_2017_Quality_Report.PDF
January 01, 2017 - DX edit 0.10 7,504
EDX01 : Missing principal diagnosis 0.04 2,530
EDX02 : Invalid diagnosis code … DRG assignment 0.00 70
Procedures EPR : Any PR edit 0.04 3,080
EPR02 : Invalid procedure code
-
hcup-us.ahrq.gov/db/nation/nis/tools/stats/NIS_1999_Quality_Report2.pdf
January 01, 1999 - Any DX edit 0.08 5,651
EDX01 : Missing principal diagnosis 0.05 3,572
EDX02 : Invalid diagnosis code … for DRG
assignment
0.00 3
Procedures EPR : Any PR edit 0.02 1,329
EPR02 : Invalid procedure code
-
hcup-us.ahrq.gov/db/nation/nis/tools/stats/NIS_2000_Quality_Report.PDF
January 01, 2000 - DX edit 0.06 4,536
EDX01 : Missing principal
diagnosis 0.03 2,017
EDX02 : Invalid diagnosis code … DRG
assignment
0.00 77
Procedures EPR : Any PR edit 0.22 16,085
EPR02 : Invalid procedure
code
-
hcup-us.ahrq.gov/db/nation/nis/tools/stats/NIS_1999_Quality_Report.pdf
January 01, 1999 - Any DX edit 0.08 5,648
EDX01 : Missing principal diagnosis 0.05 3,572
EDX02 : Invalid diagnosis code … for DRG
assignment
0.00 0
Procedures EPR : Any PR edit 0.02 1,329
EPR02 : Invalid procedure code
-
hcup-us.ahrq.gov/db/nation/nis/tools/stats/NIS_1998_Quality_Report2.PDF
January 01, 1998 - DX edit 0.14 9,275
EDX01 : Missing principal
diagnosis 0.05 3,188
EDX02 : Invalid diagnosis code … for DRG
assignment
0.00 3
Procedures EPR : Any PR edit 0.05 3,336
EPR02 : Invalid procedure code
-
hcup-us.ahrq.gov/db/nation/nis/tools/stats/NIS_1998_Quality_Report.PDF
January 01, 1998 - DX edit 0.14 9,272
EDX01 : Missing principal
diagnosis 0.05 3,188
EDX02 : Invalid diagnosis code … for DRG
assignment
0.00 0
Procedures EPR : Any PR edit 0.05 3,336
EPR02 : Invalid procedure code
-
hcup-us.ahrq.gov/db/nation/nis/tools/stats/NIS_2009_MaskedStats_Dx_Pr_Grps.PDF
January 01, 2009 - .: Missing 1,093 0.01%
.A: Invalid code 611 0.01%
.C: Inconsistent code 225 0.00%
0: Non-chronic condition … Distribution for CHRONB1
CHRONB1 Frequency
Percent
of
Total
.: Missing 1,093 0.01%
.A: Invalid code … 611 0.01%
.C: Inconsistent code 225 0.00%
1: Infectious and parasitic disease 264,334 3.38%
2: Neoplasms