HCUP/AHRQ updates

updated 6/6/2019

HCUP Offers Guidance for Using ICD-10-CM/PCS Data

A new ICD-10-CM/PCS Resources section on the HCUP User Support (HCUP-US) Web site provides information and educational materials for researchers using the Healthcare Cost and Utilization Project (HCUP) and other administrative databases.

The ICD-10-CM/PCS Resources section documents key differences in the structure of HCUP databases, provides general guidance and forewarning to users analyzing outcomes that may be affected by the transition to the ICD-10-CM/PCS coding system, and includes additional Web resources that may be useful to researchers.

If you have any questions or suggestions for additional Federal and State ICD-10-CM/PCS Web resources, please contact HCUP User Support.

2015 HCUP State Databases—Revised Structure and New Data Elements

The HCUP State Databases are annual, calendar-year files. The introduction of ICD-10-CM/PCS on October 1, 2015, means that the 2015 State Databases include a combination of codes:

  • Nine months of the data with ICD-9-CM codes (January 1, 2015, to September 30, 2015)
  • Three months of the data with ICD-10-CM/PCS (October 1, 2015, to December 31, 2015)

To alert users to this change in the data, the file structure of the 2015 HCUP State Databases stores the first three quarters of data with ICD-9-CM codes separately from the fourth quarter of data with ICD-10-CM/PCS codes.

In addition, the names of diagnosis- and procedure-related data elements under ICD-10-CM/PCS have been modified to clearly identify the new coding scheme. ICD-10-CM/PCS information on the 2015 Nationwide Databases will be available when the databases are released. Additional information on the 2015 State Databases is available in the ICD-10-CM/PCS Resources section. For questions, please contact HCUP User Support.

HCUP 1-hour webinars:

The Agency for Healthcare Research and Quality (AHRQ) is offering a two-part webinar series on the Healthcare Cost and Utilization Project (HCUP)’s research-enhancing databases, products, and tools.

September 11, 2019 – Overview of the HCUP Databases
Summary: This one-hour session will will provide an introduction to the HCUP family of databases.

September 18, 2019 – Overview of the HCUP Products and Tools
Summary: This one-hour session will cover the use of HCUP software tools and supplemental files to facilitate and augment research.

> The Webinars will be open to the public at no charge and require separate advance registration. Information will be available in August on the HCUP Workshops and Webinars page.

HCUP Data Users’ Workshop:

On September 24, 2019, AHRQ will sponsor a full-day, intermediate-level HCUP data users’ workshop at its headquarters in Rockville, Maryland. This workshop will teach health services researchers and analysts how to use or improve their use of HCUP databases and products. Registration information and the workshop description will be available in August on the HCUP Workshops and Webinars page.


Databases and Products

Since March 2019, the following State databases have been released:

 

In addition, the Nationwide Readmissions Database (NRD) is now available for data years 2010–2012.

Complete listings of available databases by year can be found in the Database Catalog on the HCUP-US Web site.


Publication Spotlights

Publications Using HCUP Data

Bucholz EM, Toomey SL, Schuster MA. Trends in pediatric hospitalizations and readmissions: 2010-2016. Pediatrics. 2019;143(2).

This study used the 2010–2016 Nationwide Readmissions Database (NRD) to characterize patient-level and hospital-level trends in annual pediatric (ages 1–17 years) admissions and 30-day readmissions. The article abstract is available via PubMed.

Ghertner R. U.S. county prevalence of retail prescription opioid sales and opioid-related hospitalizations from 2011 to 2014. Drug Alcohol Depend. 2019;194:330-5.

This study used the 2011–2014 SID and SEDD for 32 States along with data on opioid sales from the Automation of Reports and Consolidated Orders System (ARCOS) to determine the relationship between retail opioid sales rates and opioid-related hospitalization rates. The article abstract is available via PubMed.

To read additional recently published articles featuring HCUP data, please visit the Research Spotlights page on the HCUP-US Web site.

 

To read additional recently published articles featuring HCUP data, please visit the Research Spotlights page on the HCUP-US Web site.


HCUP Q&A

Question:

I am a graduate student working on my thesis and am interested in using HCUP data to support my analysis. Because I am not a coder or statistician, I am looking for some research-ready statistics as opposed to using the full HCUP databases. I noticed an online query tool, HCUPnet, on the HCUP-US Web site that seems easy to use and like it could be helpful for my study. I have a few questions about it before I get started:

  • How can I access HCUPnet? Is there a fee involved?
  • What data types and years are available?
  • How does HCUPnet handle the transition to the International Classification of Diseases, Tenth Revision (ICD-10)? Can I access International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) and Tenth Revision (ICD-10-CM) codes?

Answers:

How can I access HCUPnet? Is there a fee involved?

HCUPnet is an online query tool that features query pathways that use precalculated statistics from the HCUP databases. HCUPnet provides health care information for hospital inpatient, ED, and ambulatory settings, as well as population-based health care data on counties.

Users can access HCUPnet free of charge on the HCUPnet Web site at https://hcupnet.ahrq.gov/.

What data types and years are available?

HCUPnet users can access statistics from all of the HCUP hospital databases. The National (Nationwide) Inpatient Sample (NIS), the NRD, the Kids’ Inpatient Database (KID), the NEDS, selected SID, selected SASD, and selected SEDD are available for States that have agreed to participate in HCUPnet. Descriptions of the databases are provided on the HCUP-US Web site at https://www.hcup-us.ahrq.gov/databases.jsp.

HCUPnet is updated as databases are released and now includes 2016 nationwide data for the NIS and NEDS. Additions for 2016 data in the County- and Region-Level pathways are expected in Summer 2019. The State statistics are updated as new State data are processed, and the national statistics are updated annually as the nationwide databases are released. The State databases are released throughout the year, usually starting 18 months from the end of the calendar year. Available States and years are listed on the HCUPnet pathways. Please note that because of the transition from ICD-9-CM to ICD-10-CM/Procedure Coding System (PCS) code sets in October 2015, the available statistics for this year are limited.

How does HCUPnet handle the transition to ICD-10? Can I access ICD-9-CM and ICD-10-CM codes?

Because of the transition from ICD-9-CM to ICD-10-CM/PCS code sets beginning October 1, 2015, the 2015 statistics were calculated using partial year data, and the available statistics are limited for this year only to reflect the underlying databases and changes in the diagnosis and procedure classification systems.

HCUPnet includes information from the first three quarters of 2015 (January to September) for continuity with ICD-9-CM coded data from previous years. The statistics for October to December are not available on HCUPnet.

ICD-10-CM and ICD-10-PCS queries have been added to HCUPnet, beginning with 2016 data.



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