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hcup-us.ahrq.gov/nrdoverview.jsp
September 01, 2025 - THE NRD CONTAINS A FULL YEAR OF ICD-10-CM/PCS CODES BEGINNING WITH DATA YEAR 2016
The NRD includes … a full calendar year of data with diagnosis and procedure codes reported using the ICD-10-CM/PCS 1 … coding system beginning with data year 2016. … Criteria to determine the relationship between multiple hospital admissions for an individual patient in a calendar … Return to Contents
NRD File Structure
The 2022 NRD is an annual, calendar-year file that
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hcup-us.ahrq.gov/db/nation/neds/pgms/StataLoad_NEDS_2006v2_Hospital.Do
April 12, 2010 - ///
EDVISITS ///
YEAR … var edvisits "Total number of ED visits from this hospital in the NEDS"
label var year … "Calendar Year"
*** Convert special values to missing values ***
recode discwt … recode year (-999 -888 -666=.)
save "NEDS_2006_Hospital.dta", replace
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hcup-us.ahrq.gov/db/nation/neds/pgms/StataLoad_NEDS_2006_Hospital.Do
January 01, 2006 - ///
EDVISITS ///
YEAR … var edvisits "Total number of ED visits from this hospital in the NEDS"
label var year … "Calendar Year"
*** Convert special values to missing values ***
recode discwt … recode year (-999 -888 -666=.)
save "NEDS_2006_Hospital.dta", replace
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hcup-us.ahrq.gov/db/nation/neds/pgms/StataLoad_NEDS_2007v2_Hospital.Do
April 12, 2010 - ///
EDVISITS ///
YEAR … var edvisits "Total number of ED visits from this hospital in the NEDS"
label var year … "Calendar Year"
*** Convert special values to missing values ***
recode discwt … recode year (-999 -888 -666=.)
save "NEDS_2007_Hospital.dta", replace
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hcup-us.ahrq.gov/db/nation/neds/stats/FileSpecifications_NEDS_2013_Hospital.TXT
January 01, 2013 - 15
Columns Description
======== ===========
1 - 4 Database name
6 - 9 Discharge year … TOTAL_EDVISITS 8 Num Total number of ED visits from this hospital in the NEDS
NEDS 2013 Hospital 15 YEAR … 4 Num Calendar Year
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hcup-us.ahrq.gov/db/nation/neds/stats/FileSpecifications_NEDS_2011_Hospital.TXT
January 01, 2011 - Columns Description
======== ===========
1 - 4 Database name
6 - 9 Discharge year … TOTAL_EDVISITS 8 Num Total number of ED visits from this hospital in the NEDS
NEDS 2011 Hospital 15 YEAR … 4 Num Calendar Year
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hcup-us.ahrq.gov/db/nation/neds/stats/FileSpecifications_NEDS_2009_Hospital.TXT
January 01, 2009 - Columns Description
======== ===========
1 - 4 Database name
6 - 9 Discharge year … TOTAL_EDVISITS 8 Num Total number of ED visits from this hospital in the NEDS
NEDS 2009 Hospital 15 YEAR … 4 Num Calendar Year
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hcup-us.ahrq.gov/db/nation/neds/stats/FileSpecifications_NEDS_2015_Hospital.TXT
January 01, 2015 - 15
Columns Description
======== ===========
1 - 4 Database name
6 - 9 Discharge year … TOTAL_EDVISITS 8 Num Total number of ED visits from this hospital in the NEDS
NEDS 2015 Hospital 15 YEAR … 4 Num Calendar year
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hcup-us.ahrq.gov/db/nation/neds/stats/FileSpecifications_NEDS_2018_Hospital.TXT
January 01, 2018 - 15
Columns Description
======== ===========
1 - 4 Database name
6 - 9 Discharge year … TOTAL_EDVisits 8 Num Total number of ED visits from this hospital in the NEDS
NEDS 2018 Hospital 15 YEAR … 4 Num Calendar Year
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hcup-us.ahrq.gov/db/nation/neds/stats/FileSpecifications_NEDS_2014_Hospital.TXT
January 01, 2014 - 15
Columns Description
======== ===========
1 - 4 Database name
6 - 9 Discharge year … TOTAL_EDVISITS 8 Num Total number of ED visits from this hospital in the NEDS
NEDS 2014 Hospital 15 YEAR … 4 Num Calendar Year
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hcup-us.ahrq.gov/db/nation/neds/stats/FileSpecifications_NEDS_2011v2_Hospital.TXT
February 25, 2015 - 15
Columns Description
======== ===========
1 - 4 Database name
6 - 9 Discharge year … TOTAL_EDVISITS 8 Num Total number of ED visits from this hospital in the NEDS
NEDS 2011 Hospital 15 YEAR … 4 Num Calendar Year
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hcup-us.ahrq.gov/db/nation/neds/stats/FileSpecifications_NEDS_2016_Hospital.TXT
January 01, 2016 - 15
Columns Description
======== ===========
1 - 4 Database name
6 - 9 Discharge year … TOTAL_EDVisits 8 Num Total number of ED visits from this hospital in the NEDS
NEDS 2016 Hospital 15 YEAR … 4 Num Calendar Year
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hcup-us.ahrq.gov/db/nation/neds/stats/FileSpecifications_NEDS_2008_Hospital.TXT
January 01, 2008 - 15
Columns Description
======== ===========
1 - 4 Database name
6 - 9 Discharge year … TOTAL_EDVISITS 8 Num Total number of ED visits from this hospital in the NEDS
NEDS 2008 Hospital 15 YEAR … 4 Num Calendar Year
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hcup-us.ahrq.gov/db/nation/neds/stats/FileSpecifications_NEDS_2012_Hospital.TXT
January 01, 2012 - 15
Columns Description
======== ===========
1 - 4 Database name
6 - 9 Discharge year … TOTAL_EDVISITS 8 Num Total number of ED visits from this hospital in the NEDS
NEDS 2012 Hospital 15 YEAR … 4 Num Calendar Year
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hcup-us.ahrq.gov/db/nation/neds/stats/FileSpecifications_NEDS_2010_Hospital.TXT
January 01, 2010 - Columns Description
======== ===========
1 - 4 Database name
6 - 9 Discharge year … TOTAL_EDVISITS 8 Num Total number of ED visits from this hospital in the NEDS
NEDS 2010 Hospital 15 YEAR … 4 Num Calendar Year
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hcup-us.ahrq.gov/db/nation/neds/stats/FileSpecifications_NEDS_2019_Hospital.TXT
January 01, 2019 - 15
Columns Description
======== ===========
1 - 4 Database name
6 - 9 Discharge year … TOTAL_EDVisits 8 Num Total number of ED visits from this hospital in the NEDS
NEDS 2019 Hospital 15 YEAR … 4 Num Calendar Year
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hcup-us.ahrq.gov/db/nation/neds/stats/FileSpecifications_NEDS_2017_Hospital.TXT
January 01, 2017 - 15
Columns Description
======== ===========
1 - 4 Database name
6 - 9 Discharge year … TOTAL_EDVisits 8 Num Total number of ED visits from this hospital in the NEDS
NEDS 2017 Hospital 15 YEAR … 4 Num Calendar Year
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www.ahrq.gov/sites/default/files/wysiwyg/professionals/quality-patient-safety/hais/tools/mvp/modules/vae/monitoring-vae-facguide.docx
January 01, 2017 - :
Approximately 800,000 hospitalized patients are mechanically ventilated in the United States each year … The earliest a patient can experience an event is the third calendar day of intubation. … The 2 calendar days immediately preceding the day the patient experiences worsening oxygenation (defined … days
· Daily minimum FiO2 values increase ≥ 0.20 over daily minimum for preceding 2 calendar days
· … days
· Daily minimum FiO2 values increase ≥ 0.20 over daily minimum for preceding 2 calendar days
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hcup-us.ahrq.gov/datainnovations/clinicalcontentenhancementtoolkit/hi27.pdf
December 04, 2011 - Exclusion……………………………….15
APPENDIX E: Inpatient Discharges with >1 Lab Record, By Hospital and Calendar … Records with No Lab Record, By Hospital and Calendar
Year………………….… … .
10 | P a g e
Table C.1 Inpatient Discharges Linked to > 1 Lab Record by Year
Year … year(CY2008-2011) can be found in Appendix E.
2. … A detail listing of Inpatient Discharge records without labs by hospital and by
calendar year (CY2008
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hcup-us.ahrq.gov/db/nation/kid/tools/stats/FileSpecifications_KID_2022_Hospital.TXT
January 01, 2022 - Columns Description
======= ===========
1- 3 Database name
5- 8 Discharge year of data … KID_STRATUM 76 79 Num KID hospital stratum
KID 2022 KID_2022_Hospital 15 YEAR … 80 83 Num Calendar year
KID 2022 KID_2022_Hospital 16 HOSP_BEDSIZE