-
hcup-us.ahrq.gov/db/nation/nass/stats/FileSpecifications_NASS_2019_DX_PR_GRPS.TXT
January 01, 2019 - Elements: 565
Columns Description
======== ===========
1 - 4 Database name
6 - 9 Discharge
-
hcup-us.ahrq.gov/db/nation/nass/stats/FileSpecifications_NASS_2018_DX_PR_GRPS.TXT
January 01, 2018 - Elements: 544
Columns Description
======== ===========
1 - 4 Database name
6 - 9 Discharge
-
hcup-us.ahrq.gov/db/nation/nass/stats/FileSpecifications_NASS_2021_DX_PR_GRPS.TXT
January 01, 2021 - Elements: 568
Columns Description
======== ===========
1 - 4 Database name
6 - 9 Discharge
-
hcup-us.ahrq.gov/db/vars/pointoforiginub04/nisnote.jsp
October 04, 2025 - HCUP Supplemental Files
NIS-Trend Weights Files
NIS Hospital Ownership Files
NIS 1993-2002 Discharge-Level
-
hcup-us.ahrq.gov/db/vars/pointoforiginub04/kidnote.jsp
October 04, 2025 - HCUP Supplemental Files
NIS-Trend Weights Files
NIS Hospital Ownership Files
NIS 1993-2002 Discharge-Level
-
hcup-us.ahrq.gov/reports/methods/MS2021-01-Expected-Payer-Coding-Supplements.pdf
November 30, 2021 - Supplements 1-3: An Examination of Expected Payer Coding in HCUP Databases (Updated for 2019 HCUP Data)
HCUP Methods Series
Supplements 1–3: An Examination of Expected Payer Coding
in HCUP Databases (Updated for 2019 HCUP Data)
Report #2021-01
Contact Information:
Healthcare Cost and Utilization Project (HCU…
-
hcup-us.ahrq.gov/reports/methods/MS2022-02-Expected-Payer-Coding-Supplements.pdf
December 14, 2022 - User Guide: An Examination of Expected Payer Coding in HCUP Databases (Updated for 2020 HCUP Data), Supplements 1-3.
HCUP Methods Series
Supplements 1–3: An Examination of Expected Payer Coding
in HCUP Databases (Updated for 2020 HCUP Data)
Report #2022-02
Contact Information:
Healthcare Cost and U…
-
hcup-us.ahrq.gov/db/nation/nis/tools/stats/FileSpecifications_NIS_2019_DX_PR_GRPS_V2.TXT
January 01, 2019 - Columns Description
======= ===========
1- 3 Database name
5- 8 Discharge year of data
-
hcup-us.ahrq.gov/db/nation/nis/tools/stats/FileSpecifications_NIS_2021_DX_PR_GRPS.TXT
January 01, 2021 - Columns Description
======= ===========
1- 3 Database name
5- 8 Discharge year of data
-
hcup-us.ahrq.gov/db/nation/nis/tools/stats/FileSpecifications_NIS_2022_DX_PR_GRPS.TXT
January 01, 2022 - Columns Description
======= ===========
1- 3 Database name
5- 8 Discharge year of data
-
hcup-us.ahrq.gov/db/nation/nis/tools/stats/FileSpecifications_NIS_2020_DX_PR_GRPS_V2.TXT
January 01, 2020 - Columns Description
======= ===========
1- 3 Database name
5- 8 Discharge year of data
-
hcup-us.ahrq.gov/db/nation/kid/tools/stats/FileSpecifications_KID_2019_DX_PR_GRPS_V2.TXT
January 01, 2019 - Columns Description
======= ===========
1- 3 Database name
5- 8 Discharge year of data
-
hcup-us.ahrq.gov/db/nation/kid/tools/stats/FileSpecifications_KID_2022_DX_PR_GRPS.TXT
January 01, 2022 - Columns Description
======= ===========
1- 3 Database name
5- 8 Discharge year of data
-
hcup-us.ahrq.gov/db/nation/nrd/stats/FileSpecifications_NRD_2022_DX_PR_GRPS.TXT
January 01, 2022 - Elements: 922
Columns Description
======== ===========
1 - 3 Database name
5 - 8 Discharge
-
hcup-us.ahrq.gov/db/nation/nrd/stats/FileSpecifications_NRD_2021_DX_PR_GRPS.TXT
January 01, 2021 - Elements: 922
Columns Description
======== ===========
1 - 3 Database name
5 - 8 Discharge
-
hcup-us.ahrq.gov/db/nation/nrd/stats/FileSpecifications_NRD_2020_DX_PR_GRPS.TXT
January 01, 2020 - : 919
Columns Description
======== ===========
1 - 3 Database name
5 - 8 Discharge
-
hcup-us.ahrq.gov/db/nation/nrd/stats/FileSpecifications_NRD_2019_DX_PR_GRPS_V2.TXT
January 01, 2019 - : 918
Columns Description
======== ===========
1 - 3 Database name
5 - 8 Discharge
-
hcup-us.ahrq.gov/db/nation/nis/tools/stats/NIS_2008_MaskedStats_Severity.PDF
January 01, 2008 - NONEXTENSIVE PROCEDURE UNRELATED TO PRINCIPAL DIAGNOSIS 13,052 0.16%
955: PRINCIPAL DIAGNOSIS INVALID AS DISCHARGE
-
hcup-us.ahrq.gov/db/nation/nis/tools/stats/NIS_2009_MaskedStats_Severity.PDF
January 01, 2009 - NONEXTENSIVE PROCEDURE UNRELATED TO PRINCIPAL DIAGNOSIS 11,709 0.15%
955: PRINCIPAL DIAGNOSIS INVALID AS DISCHARGE
-
hcup-us.ahrq.gov/db/nation/kid/tools/stats/KID_2009_MaskedStats_Severity.PDF
January 01, 2009 - NONEXTENSIVE PROCEDURE UNRELATED TO PRINCIPAL DIAGNOSIS 4,040 0.12%
955: PRINCIPAL DIAGNOSIS INVALID AS DISCHARGE