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hcup-us.ahrq.gov/db/state/siddist/siddist_filecompak.jsp
June 01, 2024 - HCUP Supplemental Files
NIS-Trend Weights Files
NIS Hospital Ownership Files
NIS 1993-2002 Discharge-Level … , Alaska supplies discharge abstract data for inpatient stays
from Alaska general acute care and … Prior to 2015 data, Alaska supplied discharge abstract data for
inpatient stays from Alaska general … Exclusion of Records During HCUP Data Processing
Records with a discharge disposition of "still a … patient" or "admitted
as an inpatient" were excluded from the HCUP Alaska inpatient data.
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hcup-us.ahrq.gov/db/nation/nis/NISIntroduction2022.pdf
November 01, 2024 - These inpatient data include clinical and
resource use information typically available from discharge … The NIS is sampled from the State Inpatient Databases (SID), which include all inpatient data
that are … INTRODUCTION TO THE HCUP NATIONAL INPATIENT SAMPLE (NIS)
Overview of NIS Data
The National Inpatient … outpatient data
• ICD-10-PCS: procedure coding on inpatient data. … NIS Data Sources, Hospitals, and Inpatient Stays
The NIS is sampled from the State Inpatient Databases
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hcup-us.ahrq.gov/reports/statbriefs/sb303-Comorbidities-Adult-Hospitalizations-2019.pdf
January 01, 2019 - Unit of analysis
The unit of analysis is the hospital discharge (i.e., the hospital stay), not a person … Service line
Each discharge was assigned hierarchically into a single hospital service line based on … The MS-DRG grouper first assigns the
discharge to an MDC based on the principal diagnosis. … If the discharge involves an
operating room procedure, it is assigned to one of the surgical MS-DRGs … For this Statistical Brief, when more than one payer is listed for a hospital discharge, the first-listed
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hcup-us.ahrq.gov/db/state/siddist/siddist_filecompmi.jsp
April 01, 2025 - Types of Facilities Included in the Files Provided to HCUP by the Partner
Michigan supplied discharge … abstract data for inpatient stays from general acute care and specialty hospitals (e.g., rehabilitation … Michigan inpatient data:
Records that were marked as replicated by the data source were excluded … MHA included a flag on the discharge records that indicated if the record was replicated. … Records from non-Michigan hospitals were deleted during HCUP data processing
Records with a discharge
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hcup-us.ahrq.gov/datainnovations/grants.jsp
July 01, 2016 - 2010 to improve statewide all-payer, hospital-based encounter-level data (inpatient, emergency department … Successfully linked laboratory data to hospital discharge data
Established a Master Patient ID (including … and analytical models to better predict hospital outcomes such as readmissions, mortality, and inpatient … These data linked all-payer hospital discharge data and death certificates to support a wide range of … Hospital Inpatient Discharge Data; collecting tribal identifier data; evaluating the quality of race
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www.ahrq.gov/data/resources/index.html?page=4
National (Nationwide) Inpatient Sample (NIS)
The National (Nationwide) Inpatient Sample (NIS) is … the largest all-payer inpatient care database in the United States, containing data on more than seven … The SEDD capture discharge information on all emergency department visits that do not result in an admission … State Inpatient Databases (SID)
The State Inpatient Databases (SID) are State-specific files that … contain all inpatient care records in participating states.
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hcup-us.ahrq.gov/nisoverview.jsp
September 01, 2025 - The NIS is sampled from the State Inpatient Databases (SID), including all inpatient data that are currently … Inpatient Sample" to the " National Inpatient Sample." … Because inpatient data are available for many individual States through the HCUP Central Distributor, … There are three discharge-level files and one hospital-level file:
Discharge-level files
Core … File is a single file containing commonly used data elements (e.g., age, expected primary payer, discharge
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digital.ahrq.gov/ahrq-funded-projects/automatic-notification-system-test-results-finalized-after-discharge/annual-summary/2010
January 01, 2010 - The intervention primarily relies upon the inpatient test results system and the admission, discharge … Patients for whom the physician was both the inpatient and outpatient provider were excluded. … : The randomized controlled trial (RCT) was initiated and the project is focusing on collection of data … Preliminary data from the study pilot and the RCT show a trend toward increased awareness for the intervention … group as compared with the control group, but these data are crude and the total responses to date are
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hcup-us.ahrq.gov/datainnovations/clinicalcontentenhancementtoolkit/hi31.pdf
March 23, 2010 - Results Status
*Patient Middle Initial Observation Value
*Admission Date/Time Unit of Measure
*Discharge … to HHIC Inpatient discharge data
DATA QUALITY/STANDARDIZATION
Too much, too little, what is this … Code
• Deterministic/Probabilistic Linking
– Multiple linking iterations performed to link the
inpatient … discharge data to one or more lab
records based on 9 key variables
– Linking Iterations “customized … ” due to variances
on key linking variables for multiple hospitals
OVERALL
Inpatient Discharges
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hcup-us.ahrq.gov/reports/statbriefs/sb175-Hospital-Cost-Utilization-Projections-2013.pdf
January 01, 2013 - data from 2003 through 2011 along with early 2012 data from nine
HCUP States to develop national projections … HCUP
databases bring together the data collection efforts of State data organizations, hospital associations … The reports use HCUP administrative health care data.
13
About the SID
The HCUP State Inpatient … Databases (SID) are hospital inpatient databases from data organizations
participating in HCUP. … The SID contain the universe of the inpatient discharge abstracts in the
participating HCUP States,
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www.ahrq.gov/sites/default/files/wysiwyg/data/SyH-DR-Codebook.pdf
December 01, 2023 - Data elements are categorized into four categories: person data elements, claim data elements
(inpatient … This data element is available in all inpatient and outpatient files except Medicaid inpatient. … DSCHRG_
STUS
Discharge
status
0 Unknown value (but present in data).
1 Discharged to home/self-care … (routine discharge).
2 Discharged/transferred to other short-term general hospital for inpatient … This data element is available in all inpatient and outpatient files except Medicaid outpatient.
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hcup-us.ahrq.gov/db/nation/nis/NISChangesBeginningDataYr2016.pdf
September 01, 2022 - These inpatient data include
clinical and resource use information typically available from discharge … and Utilization Project (HCUP) National Inpatient
Sample: Change in Structure and Data Elements Caused … There are three discharge-
level files and one hospital-level file:
Discharge-level files
• Core … File is a single file containing commonly used data elements (e.g., age,
expected primary payer, discharge … includes a complete list of data element changes beginning with the 2016
National Inpatient Sample
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hcup-us.ahrq.gov/reports/statbriefs/sb177-Hospitalizations-for-Opioid-Overuse.pdf
August 01, 2014 - Population Denominator Data for use with the HCUP Databases (Updated with
2012 Population data). … HCUP
databases bring together the data collection efforts of State data organizations, hospital associations … SID
The HCUP State Inpatient Databases (SID) are hospital inpatient databases from data organizations … The SID contain the universe of the inpatient discharge abstracts in the
participating HCUP States, … HCUPnet generates statistics using data from HCUP's Nationwide Inpatient Sample (NIS),
the Kids' Inpatient
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hcup-us.ahrq.gov/reports/natstats/his96/table1e.htm
January 01, 1996 - Hospital Inpatient Statistics, 1996
Table 1 (continued). … Statistics for
1996 HCUP Nationwide Inpatient Sample, by multi-level CCS diagnosis (principal
diagnosis … ____________________________________________________________________
(NOTE: This table includes 10 data … Nationwide Inpatient Sample. … Return to Hospital
Inpatient Statistics 1996 Return to
Contents for Table 1 Select for
Contents for
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hcup-us.ahrq.gov/reports/ataglance/HCUPanalysisSepsisTrendsUS.pdf
November 10, 2020 - The underlying data tables for each figure are provided in Appendix C. … HCUP databases bring together the data collection
efforts of State data organizations, hospital associations … resource of encounter-level health care
data. … The 2018 NIS sampling frame includes data from the HCUP State Inpatient Databases
(SID) from 47 States … DATA TABLES
Any Diagnosis of Sepsis
Table 1a-1: Number of Adult, Nonmaternal Inpatient Stays with
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hcup-us.ahrq.gov/db/state/siddist/siddist_filecompme.jsp
August 01, 2006 - were constructed from the Maine Health Data Organization inpatient discharge files. … Types of Facilities Included in the Files Provided to HCUP by the Partner
These data include inpatient … discharge data from general acute care hospitals, including psychiatric and rehabilitation hospitals … Exclusion of Records During HCUP Data Processing
Records with a discharge disposition of "still … a patient" and "admitted as an inpatient" were excluded from the HCUP Maine inpatient data.
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hcup-us.ahrq.gov/sidoverview.jsp
September 01, 2025 - SID Overview
Overview of the State Inpatient Databases (SID)
The State Inpatient Databases … The SID includes inpatient discharge records from community hospitals in that State. … The SID files encompass all patients, regardless of payer, providing a unique view of inpatient care … , such as:
Principal and secondary diagnoses and procedures
Admission and discharge status … Return to Contents
SID File Structure
The SID are calendar year files based on discharge
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www.ahrq.gov/sites/default/files/2024-01/jack-report.pdf
January 01, 2024 - pilot, those
data were not included in this analysis. … We are now continuing to analyze our discharge
interview data so that we can improve our risk probabilities … errors
Involve Emergency Department in discharge process:
Begin online data collection and discharge … planning form in ED and have linked to
inpatient record and/or discharge summary paperwork
Include … PCP unaware of hospitalization and issues during
inpatient stay and outstanding issues upon discharge
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hcup-us.ahrq.gov/reports/natstats/his96/table2b.htm
January 01, 1996 - Hospital Inpatient Statistics, 1996
Table 2 (continued). … Statistics for
1996 HCUP Nationwide Inpatient Sample, by multi-level CCS procedure (principal
procedure … You may need to scroll your browser to the right to see all the data.)
8 Operations on the hemic and … Nationwide Inpatient Sample. … Return to Hospital
Inpatient Statistics 1996 Return to
Contents for Table 1 Return to
Contents for
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hcup-us.ahrq.gov/reports/natstats/his95/clinclas.htm
January 01, 1999 - By integrating core data elements comparable to those in a
typical discharge abstract, HCUP has created … selected State government and private data
organizations with statewide hospital inpatient data systems … The HCUP Nationwide Inpatient Sample (NIS) contains resource use information
included in a typical discharge … Other problems inherent in hospital inpatient data include missing data,
underreporting of socially … How accurate are hospital discharge data for evaluating
effectiveness of care?