-
hcup-us.ahrq.gov/reports/methods/2004_6_appendix_D.pdf
January 01, 2004 - State Ambulatory Surgery
Databases (SASD), and not all States participate in HCUP. … Table 26e D-42 2/2/2005
Table 27: Injury Records Classified by Intent
2001 HCUP Ambulatory Surgery … Table 29 D-45 2/2/2005
2001 HCUP Ambulatory Surgery Records
State
Maximum Number
of Diagnoses … Center Data
COMPARISONS OF AMBULATORY SURGERY DATA
SASD versus AHA
CONCLUSION
APPENDIX 1. … Center Data
COMPARISONS OF AMBULATORY SURGERY DATA
SASD versus AHA
CONCLUSION
APPENDIX 1.
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hcup-us.ahrq.gov/reports/factbooks.jsp
June 01, 2021 - Classes Refined for ICD-10-PCS
Tools for CPT and HCPCS Level II
CCS for Services and Procedures
Surgery … ICD-9-CM
Utilization Flags for Revenue Center Codes and ICD-9-CM
Procedure Classes for ICD-9-CM
Surgery … Community Hospitals, 2004
Ambulatory Surgery in U.S.
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hcup-us.ahrq.gov/tools_software.jsp
July 01, 2025 - Software (CCS) for Services and Procedures
Groups codes into over 240 clinical categories
Surgery … Procedure Classes for ICD-9-CM
Identifies major, minor, diagnostic and therapeutic procedures
Surgery
-
hcup-us.ahrq.gov/db/availability_public.jsp
September 01, 2025 - Classes Refined for ICD-10-PCS
Tools for CPT and HCPCS Level II
CCS for Services and Procedures
Surgery … ICD-9-CM
Utilization Flags for Revenue Center Codes and ICD-9-CM
Procedure Classes for ICD-9-CM
Surgery … Revised 9/29/25
State
State Inpatient Databases
State Ambulatory Surgery and Services Databases … Databases
National (Nationwide) Inpatient Sample
Kids' Inpatient Database
Nationwide Ambulatory Surgery … , 16, 19, 22
2016-2022
2018-2022
State
State Inpatient Databases
State Ambulatory Surgery
-
hcup-us.ahrq.gov/tech_assist/index_abc.jsp
February 01, 2022 - Classes Refined for ICD-10-PCS
Tools for CPT and HCPCS Level II
CCS for Services and Procedures
Surgery … ICD-9-CM
Utilization Flags for Revenue Center Codes and ICD-9-CM
Procedure Classes for ICD-9-CM
Surgery … Home Page
Agency for Healthcare Research and Quality (AHRQ)
AHRQualityIndicators™
Ambulatory Surgery … Data
Ambulatory Surgery in U.S.
-
hcup-us.ahrq.gov/db/vars/ncpt_notinscope/nassnote.jsp
August 01, 2019 - Classes Refined for ICD-10-PCS
Tools for CPT and HCPCS Level II
CCS for Services and Procedures
Surgery … ICD-9-CM
Utilization Flags for Revenue Center Codes and ICD-9-CM
Procedure Classes for ICD-9-CM
Surgery
-
hcup-us.ahrq.gov/reports/infographics/flus-annual-impact.jsp
May 01, 2020 - Classes Refined for ICD-10-PCS
Tools for CPT and HCPCS Level II
CCS for Services and Procedures
Surgery … ICD-9-CM
Utilization Flags for Revenue Center Codes and ICD-9-CM
Procedure Classes for ICD-9-CM
Surgery … Annual Flu-Related Expenses, 2016-17
$840 for emergency room visits
$312 for ambulatory surgery
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hcup-us.ahrq.gov/db/nation/nass/nassrefinements2018.jsp
December 21, 2019 - Classes Refined for ICD-10-PCS
Tools for CPT and HCPCS Level II
CCS for Services and Procedures
Surgery … ICD-9-CM
Utilization Flags for Revenue Center Codes and ICD-9-CM
Procedure Classes for ICD-9-CM
Surgery … Refinements
2018 NASS Refinements
The 2018 NASS applied updated versions of the HCUP Surgery
-
hcup-us.ahrq.gov/db/vars/s_disc_u/nassnote.jsp
August 01, 2019 - Classes Refined for ICD-10-PCS
Tools for CPT and HCPCS Level II
CCS for Services and Procedures
Surgery … ICD-9-CM
Utilization Flags for Revenue Center Codes and ICD-9-CM
Procedure Classes for ICD-9-CM
Surgery … For the NASS, N_DISC_U contains the total number of major ambulatory surgery encounters in sampled hospital-owned
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hcup-us.ahrq.gov/db/nation/nass/nassknowndataissue_2021.jsp
January 01, 2021 - Classes Refined for ICD-10-PCS
Tools for CPT and HCPCS Level II
CCS for Services and Procedures
Surgery … ICD-9-CM
Utilization Flags for Revenue Center Codes and ICD-9-CM
Procedure Classes for ICD-9-CM
Surgery … NASS DATABASE DOCUMENTATION – CORRECTIONS
Corrections to the National Ambulatory
Surgery … less than one
percent (0.84 percent) of the records in the 2021 HCUP
Nationwide Ambulatory Surgery
-
hcup-us.ahrq.gov/db/state/sedddist/sedddist_filecompwi.jsp
June 01, 2007 - Classes Refined for ICD-10-PCS
Tools for CPT and HCPCS Level II
CCS for Services and Procedures
Surgery … ICD-9-CM
Utilization Flags for Revenue Center Codes and ICD-9-CM
Procedure Classes for ICD-9-CM
Surgery … The Wisconsin Department of Health Services collects an outpatient file that includes ambulatory surgery … Identification of the type of service is based on a record type indicator:
Ambulatory surgery (record … When an ED visit results in an inpatient discharge or an outpatient surgery, the facility can choose
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hcup-us.ahrq.gov/db/nation/nass/nassrefinements2019.jsp
October 18, 2021 - Classes Refined for ICD-10-PCS
Tools for CPT and HCPCS Level II
CCS for Services and Procedures
Surgery … ICD-9-CM
Utilization Flags for Revenue Center Codes and ICD-9-CM
Procedure Classes for ICD-9-CM
Surgery … :
The 2019 NASS is based on data selected from both the HCUP State Ambulatory Surgery
-
hcup-us.ahrq.gov/db/state/sedddist/sedddist_filecompga.jsp
December 01, 2016 - Classes Refined for ICD-10-PCS
Tools for CPT and HCPCS Level II
CCS for Services and Procedures
Surgery … ICD-9-CM
Utilization Flags for Revenue Center Codes and ICD-9-CM
Procedure Classes for ICD-9-CM
Surgery … Systems provides HCUP with an outpatient file that includes emergency department (ED) visit, ambulatory surgery … GHA uses a patient type indicator to distinguish between these types of records:
Ambulatory surgery … (patient type A)
Ambulatory surgery that originated in the ED (patient type AE)
Emergency department
-
hcup-us.ahrq.gov/db/state/sedddist/sedddist_filecompnv.jsp
September 01, 2013 - Classes Refined for ICD-10-PCS
Tools for CPT and HCPCS Level II
CCS for Services and Procedures
Surgery … ICD-9-CM
Utilization Flags for Revenue Center Codes and ICD-9-CM
Procedure Classes for ICD-9-CM
Surgery … file to HCUP that includes encounter-level data for emergency department (ED) services, outpatient surgery … , ambulatory surgery, and other outpatient. … CHIA provides HCUP with separate emergency department (ED) and ambulatory surgery (AS) source files.
-
hcup-us.ahrq.gov/reports/projections/2012-03.pdf
January 01, 2012 - Income (Lowest Compared to Highest Quartile) .........................44
Hip Replacement Revision Surgery … • primary knee arthroplasty for osteoarthritis
• knee replacement revision surgery
• spinal fusion … Prevalence, health care expenditures, and orthopedic surgery
workforce for musculoskeletal conditions … Hip replacement revision surgery involves replacing part or all of an artificial (prosthetic) hip … Knee replacement revision surgery involves replacing part or all of an artificial (prosthetic) knee
-
hcup-us.ahrq.gov/db/state/sedddist/sedddist_filecompky.jsp
August 01, 2012 - Classes Refined for ICD-10-PCS
Tools for CPT and HCPCS Level II
CCS for Services and Procedures
Surgery … ICD-9-CM
Utilization Flags for Revenue Center Codes and ICD-9-CM
Procedure Classes for ICD-9-CM
Surgery … on the record (i.e., revenue codes and/or CPT codes) is used to identify a record as ED, ambulatory surgery … Records in the outpatient file are marked by patient type:
"OS" for outpatient surgery visit
"OC … SEDD records with evidence of other types of outpatient service, such as outpatient surgery can be identified
-
hcup-us.ahrq.gov/reports/methods/2007_07.pdf
January 01, 2007 - Centers for Medicare and Medicaid Services Provider of Services File
SMG Freestanding Outpatient Surgery … Center Data
COMPARISONS OF AMBULATORY SURGERY DATA
SASD versus AHA
CONCLUSION
APPENDIX 1. … Center Data
COMPARISONS OF AMBULATORY SURGERY DATA
SASD versus AHA
CONCLUSION
APPENDIX 1. … Center Data
COMPARISONS OF AMBULATORY SURGERY DATA
SASD versus AHA
CONCLUSION
APPENDIX 1. … Center Data
COMPARISONS OF AMBULATORY SURGERY DATA
SASD versus AHA
CONCLUSION
APPENDIX 1.
-
hcup-us.ahrq.gov/reports/spotlights.jsp
June 01, 2018 - Classes Refined for ICD-10-PCS
Tools for CPT and HCPCS Level II
CCS for Services and Procedures
Surgery … ICD-9-CM
Utilization Flags for Revenue Center Codes and ICD-9-CM
Procedure Classes for ICD-9-CM
Surgery … This study utilizes the 2011 State Inpatient Database (SID) , State Ambulatory Surgery Databases (SASD … California to investigate Post-Hospital Syndrome (PHS) and post-operative outcomes following elective surgery … This study used the 2005-2012 State Inpatient Database (SID) , State Ambulatory Surgery and Services
-
hcup-us.ahrq.gov/datainnovations/clinicaldata/5MHAProjBenefits011508.jsp
December 05, 2010 - Classes Refined for ICD-10-PCS
Tools for CPT and HCPCS Level II
CCS for Services and Procedures
Surgery … ICD-9-CM
Utilization Flags for Revenue Center Codes and ICD-9-CM
Procedure Classes for ICD-9-CM
Surgery … outcome rates with and without enhancement of its analytic database
Risk-Adjusted Mortality - CABG Surgery … Chart of risk-adjusted mortality in percent for CABG surgery
Chart shows confidence interval … risk-adjusted mortality, and p-value of predicted to observed percent risk-adjusted mortality for CABG surgery
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hcup-us.ahrq.gov/db/state/sedddist/sedddist_filecompnj.jsp
March 01, 2007 - Classes Refined for ICD-10-PCS
Tools for CPT and HCPCS Level II
CCS for Services and Procedures
Surgery … ICD-9-CM
Utilization Flags for Revenue Center Codes and ICD-9-CM
Procedure Classes for ICD-9-CM
Surgery … and Senior Services provides one source file to HCUP that contains a mixture of inpatient, ambulatory surgery … Patient Type Flag with values listed below:
0 - Inpatient: Bill Type = 011X or 012X
1 - Same Day Surgery … outpatient services
Emergency department charges for revenue codes 45x
No operating room or ambulatory surgery