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hcup-us.ahrq.gov/overview.jsp
February 01, 2022 - NIS (starting with 1988)
KID (starting with 1997)
NASS (starting with 2016)
NEDS (starting with … 2006)
NRD (starting with 2010)
SID (starting with 1995)
SASD (starting with 1997)
SEDD (starting
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hcup-us.ahrq.gov/tools_software.jsp
July 01, 2025 - Files *
Facilitate estimating resource costs of inpatient care for NIS, KID, NRD, and SID starting … in 2001 and emergency department care for NEDS and SEDD starting in 2012
Hospital Market Structure … need to track patients within a state and across time and hospital settings in SID, SASD, and SEDD starting … Association (AHA) Linkage Files **
Provide information to link AHA data to SID, SASD, and SEDD starting
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hcup-us.ahrq.gov/toolssoftware/chronic_icd10/CCIR-User-Guide-v2025-1.pdf
November 01, 2024 - • Added ICD-10-CM diagnosis codes valid starting in fiscal year 2025 so the tool now
includes all ICD … Starting on October 1, 2015,
diagnoses for hospital inpatient stays and outpatient encounters in the … Codes indicating any injury encounter (all ICD-10-CM codes starting with S or T) are considered not … Codes indicating any encounter for the underdosing of a drug (select ICD-10-CM codes starting with
T … Codes for factors influencing health status and contact with health services (ICD-10-CM codes starting
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hcup-us.ahrq.gov/doc/HCUP_DatabaseCatalog_NationwideDatabases.xlsx
January 01, 2022 - Distributor Data Catalog for the National Inpatient Sample (NIS)
Updated: 12/4/2024
The NIS is available starting … Catalog for the Nationwide Ambulatory Surgery Sample (NASS)
Updated: 12/4/2024
The NASS is available starting … Catalog for the Nationwide Emergency Department Sample (NEDS)
Updated: 12/4/2024
The NEDS is available starting … Data Catalog for the Nationwide Readmissions Database (NRD)
Updated: 12/4/2024
The NRDS is available starting
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hcup-us.ahrq.gov/db/vars/pointoforiginub04/nisnote.jsp
October 04, 2025 - Valid Starting in 2011: Transfer from Skilled Nursing Home (SNF), Intermediate Care Facility (ICF), … Valid Starting in 2011: Transfer from hospice facility. … Valid Starting in 2011: Transfer from Skilled Nursing Home (SNF), Intermediate Care Facility (ICF), … in 2020)
98
Invalid (starting in 2020)
other
Missing
Newborn Admissions (TYPE = … Valid Starting in 2011: Transfer from hospice facility.
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hcup-us.ahrq.gov/db/state/siddist/2009_SID_All_States.pdf
January 01, 2009 - The data element MDC_NoPOA was added to the file design starting with
2010. … In the revised versions, MDC_NoPOA was added directly after “MDC24”, which shifts the
starting column
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hcup-us.ahrq.gov/toolssoftware/ccsr/dxccsr.jsp
July 01, 2025 - CCSR tool includes the assignment of a default CCSR for the principal diagnosis for inpatient data starting … with v2020.2 and a default CCSR for the first-listed diagnosis for outpatient data starting with v2021.1 … Specify prefix for DX array using macro statement %LET DXPREFIX=
I10_DX1-I10DXn in all HCUP databases starting
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hcup-us.ahrq.gov/db/state/sasddist/sasddist_filecompky.jsp
August 01, 2006 - Starting in 2015, Kentucky began collecting all ambulatory surgery and other outpatient services data … Starting in 2014, Kentucky changed their outpatient surgery data collection criteria to include any record … Starting in 2015, outpatient services are identified by the 18 service markers. … Starting in data year 2018, the HCUP data element HOSPITAL_OWNED can be used to identify hospital-owned
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hcup-us.ahrq.gov/db/vars/i10_injury/nassnote.jsp
August 10, 2019 - Beginning in data year 2019, the data elements are available on the HCUP State databases and the NEDS
Starting … Injuries are Identified by the Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses
Starting … Identify Injury Discharges
Below is a list of the ICD-10-CM diagnosis codes used to identify injuries starting
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hcup-us.ahrq.gov/db/vars/i10_multinjury/nassnote.jsp
August 10, 2019 - Starting in Data Year 2020, Initial Encounter Injuries are Identified by the Clinical Classifications … Software Refined (CCSR) for ICD-10-CM Diagnoses
Starting with v2021.1 of the CCSR for ICD-10-CM, the … Identify Injury Discharges
Below is a list of the ICD-10-CM diagnosis codes used to identify injuries starting
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hcup-us.ahrq.gov/reports/natstats/rn5.htm
November 01, 1998 - This information can be used as a starting point for more in-depth
analyses aimed at assessing differences … Third-party
payers and managed care organizations can use this information as a starting
point for
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hcup-us.ahrq.gov/db/vars/pointoforiginub04/kidnote.jsp
October 04, 2025 - Valid Starting in 2011: Transfer from Skilled Nursing Home (SNF), Intermediate Care Facility (ICF), … Valid Starting in 2011: Transfer from hospice facility. … Valid Starting in 2011: Transfer from Skilled Nursing Home (SNF), Intermediate Care Facility (ICF), … in 2020)
98
Invalid (starting in 2020)
other
Missing
Newborn Admissions (TYPE = … Valid Starting in 2011: Transfer from hospice facility.
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hcup-us.ahrq.gov/db/vars/pl_nchs/nassnote.jsp
August 01, 2019 - The name of this HCUP data element and the version of the categorization have changed over time:
Starting … Starting in the 2013 HCUP databases, the data element name is PL_NCHS.
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hcup-us.ahrq.gov/db/state/siddist/siddist_filecompwa.jsp
June 01, 2025 - Starting in data year 2023, the ZIP Code for discharges (of any age) with diagnoses indicating substance … hospitals included in the SID and the number of hospitals reported in the AHA Annual Survey is available starting
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hcup-us.ahrq.gov/db/vars/key/nisnote.jsp
September 01, 2008 - The length of the value of KEY was increased from 14 characters to 15 characters starting in the 2011 … Variable Description Value Value Description KEY Unique record identifier Prior to 2011: 14(n), starting
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hcup-us.ahrq.gov/db/vars/key/kidnote.jsp
September 01, 2008 - The length of the value of KEY was increased from 14 characters to 15 characters starting in the 2011 … Variable Description Value Value Description KEY Unique record identifier Prior to 2011: 14(n), starting
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hcup-us.ahrq.gov/db/vars/i10_delivery/nisnote.jsp
August 10, 2024 - is based on the following screen:
Any of the following ICD-10-CM diagnosis codes
Diagnoses starting … pregnancy with abortive outcome (O00, O01, O02, O03, O04, O07, or O08)
ICD-10-PCS procedure codes starting
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hcup-us.ahrq.gov/db/state/siddist/siddist_filecompri.jsp
August 01, 2006 - TOOLS
SID File Composition - Rhode Island
SID Notes
Source Files
Starting … included in the SID and the number of hospitals reported in the AHA Annual Survey is available
starting
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hcup-us.ahrq.gov/db/state/siddist/siddist_filecompmd.jsp
August 01, 2006 - hospitals included in the SID and the number of hospitals reported in the AHA Annual Survey is available starting … Starting in data year 2018, the data element ZIP is stored on the Core file.
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hcup-us.ahrq.gov/db/nation/nass/nassknowndataissue_2021.jsp
January 01, 2021 - This will create a file with the corrected set of
comorbidity data elements (starting with CMR_) … This will create a file with the CCSR data
elements (starting with DXCCSR_).