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461. Statistical Brief #110: Hospitalizations Related to Childbirth, 2008 (pdf file)
     hcup-us.ahrq.gov/reports/statbriefs/sb110.pdf
     April 01, 2011 - If two procedures appear to meet this definition, the procedure most related to the principal diagnosis … Case definition For this report, the following codes were used to identify childbirth-related diagnoses

462. Statistical Brief #147: Emergency Department Visits and Hospital Inpatient Stays for Seasonal and 2009 H1N1 Influenza, 2008-2009 (pdf file)
     hcup-us.ahrq.gov/reports/statbriefs/sb147.pdf
     March 01, 2012 - If two procedures appear to meet this definition, the procedure most related to the principal diagnosis … Case definition For this report, influenza diagnoses were defined as all-listed ICD-9-CM diagnosis codes

463. Geographic Variation in Hospital Inpatient List Prices in the United States, 2013 #209
     hcup-us.ahrq.gov/reports/statbriefs/sb209-Geographic-Variation-Hospital-Inpatient-Prices.jsp
     August 01, 2016 - Revisions to how hospitals are defined—the NIS now uses the definition of hospitals and discharges supplied

464. Overview of Hospital Stays in the United States, 2012 (pdf file)
     hcup-us.ahrq.gov/reports/statbriefs/sb180-Hospitalizations-United-States-2012.pdf
     January 01, 2012 - • Revisions to how hospitals are defined—the NIS now uses the definition of hospitals and discharges

465. THE HCUP NATIONWIDE AMBULATORY SURGERY SAMPLE (NASS) 2018
     hcup-us.ahrq.gov/db/nation/nass/NASS_Introduction_2018.jsp
     January 01, 2018 - The following three objectives guided the definition of data elements in all HCUP databases: Ensure … NASS development steps in greater detail. 3.2 Selection of Major Ambulatory Surgeries 3.2.1 Definition … In this section, we summarize the NASS setting and universe definition, the process for constructing … National estimates do not exist for several reasons, but the most important is the definition of ambulatory … The NASS uses a CPT code- and data-based definition of major ambulatory surgeries (see Section 3.2

466. Most Frequent Operating Room Procedures Performed in U.S. Hospitals, 2003–2012 (pdf file)
     hcup-us.ahrq.gov/reports/statbriefs/sb186-Operating-Room-Procedures-United-States-2012.pdf
     January 01, 2012 - • Revisions to how hospitals are defined—the NIS now uses the definition of hospitals and discharges

467. HCUP Statistical Brief #34: Hospital Stays Involving Musculoskeletal Procedures, 1997–2005 (pdf file)
     hcup-us.ahrq.gov/reports/statbriefs/sb34.pdf
     July 01, 2007 - If two procedures appear to meet this definition, the procedure most related to the principal diagnosis

468. Maskedstats Nis 2017 Core (pdf file)
     hcup-us.ahrq.gov/db/nation/nis/tools/stats/MaskedStats_NIS_2017_Core.PDF
     January 01, 2017 - > |t| <.0001 Sign M 3168002 Pr >= |M| <.0001 Signed Rank S 1.004E13 Pr >= |S| <.0001 Quantiles (Definition … > |t| <.0001 Sign M 3511646 Pr >= |M| <.0001 Signed Rank S 1.233E13 Pr >= |S| <.0001 Quantiles (Definition … Pr > |t| <.0001 Sign M 3563957 Pr >= |M| <.0001 Signed Rank S 1.27E13 Pr >= |S| <.0001 Quantiles (Definition … > |t| <.0001 Sign M 3579847 Pr >= |M| <.0001 Signed Rank S 1.282E13 Pr >= |S| <.0001 Quantiles (Definition … Univariates of Selected Continuous Data Elements Variable: DISCWT (NIS discharge weight) Quantiles (Definition

469. Maskedstats Nis 2016 Core (pdf file)
     hcup-us.ahrq.gov/db/nation/nis/tools/stats/MaskedStats_NIS_2016_Core.PDF
     January 01, 2016 - > |t| <.0001 Sign M 3145173 Pr >= |M| <.0001 Signed Rank S 9.892E12 Pr >= |S| <.0001 Quantiles (Definition … > |t| <.0001 Sign M 3501381 Pr >= |M| <.0001 Signed Rank S 1.226E13 Pr >= |S| <.0001 Quantiles (Definition … > |t| <.0001 Sign M 3504507 Pr >= |M| <.0001 Signed Rank S 1.228E13 Pr >= |S| <.0001 Quantiles (Definition … > |t| <.0001 Sign M 3567545 Pr >= |M| <.0001 Signed Rank S 1.273E13 Pr >= |S| <.0001 Quantiles (Definition … Univariates of Selected Continuous Data Elements Variable: DISCWT (NIS discharge weight) Quantiles (Definition

470. Opioid-Related Inpatient Stays and Emergency Department Visits Among Patients Aged 65 Years and Older, (pdf file)
     hcup-us.ahrq.gov/reports/statbriefs/sb244-Opioid-Inpatient-Stays-ED-Visits-Older-Adults.pdf
     February 01, 2018 - Case definition Opioid-related hospital use was identified using the following all-listed ICD-9-CM diagnosis … • Revisions to how hospitals are defined—the NIS now uses the definition of hospitals and discharges

471. HCUP Statistical Brief #11: Hospitalizations Related to Childbirth, 2003 (pdf file)
     hcup-us.ahrq.gov/reports/statbriefs/sb11.pdf
     August 01, 2006 - If two procedures appear to meet this definition, the procedure most related to the principal diagnosis

472. Statistical Brief #150
     hcup-us.ahrq.gov/reports/statbriefs/sb150.jsp
     March 01, 2013 - Case definition The ICD-9-CM codes defining infectious enteritis and foodborne illness include diagnosis … The definition of foodborne illness was drawn from two sources: a 2004 study on trends in food safety

473. Statistical Brief #11
     hcup-us.ahrq.gov/reports/statbriefs/sb11.jsp
     June 11, 2008 - If two procedures appear to meet this definition, the procedure most related to the principal diagnosis

474. Overview of Operating Room Procedures During Inpatient Stays in U.S. Hospitals, 2014 (pdf file)
     hcup-us.ahrq.gov/reports/statbriefs/sb233-Operating-Room-Procedures-United-States-2014.pdf
     January 01, 2014 - • Revisions to how hospitals are defined—the NIS now uses the definition of hospitals and discharges

475. Characteristics of Inpatient Stays Involving Hepatitis C, 2005-2014 (pdf file)
     hcup-us.ahrq.gov/reports/statbriefs/sb232-Hepatitis-C-Hospital-Stays-Trends.pdf
     June 19, 2017 - toolssoftware/ccs/ccs.jsp http://www.hcup-us.ahrq.gov/toolssoftware/comorbidity/comorbidity.jsp 15 Case definition … Office of Management and Budget definition. … • Revisions to how hospitals are defined—the NIS now uses the definition of hospitals and discharges

476. Trends in Emergency Department Visits, 2006-2014 #227
     hcup-us.ahrq.gov/reports/statbriefs/sb227-Emergency-Department-Visit-Trends.jsp
     September 01, 2017 - There are 15 first-listed diagnoses included in the mental health/substance abuse ED visit category definition … 9-CM and CCS diagnosis codes for defining type of first-listed diagnosis for ED visits Type Definition … Diseases, Ninth Revision, Clinical Modification; NEC, not elsewhere classified; OB, obstetric Note: The definition … includes five diagnosis codes that are also included under two CCS diagnosis categories used for the definition

477. Statistical Brief #43: Hospital Stays Involving Chronic Pulmonary Heart Disease, 2005 (pdf file)
     hcup-us.ahrq.gov/reports/statbriefs/sb43.pdf
     December 01, 2007 - Case Definition The ICD-9-CM codes defining pulmonary heart disease include diagnosis codes in the following … Pulmonary Heart Disease – 416.9: Chronic Pulmonary Heart Disease Not Otherwise Specified (NOS) This definition

478. Trends and Projections in U.S. Hospital Costs by Patient Age, 2003-2013 Statistical Brief #176
     hcup-us.ahrq.gov/reports/statbriefs/sb176-Hospital-Cost-Projections-by-Age-2013.jsp
     July 01, 2014 - Definitions Case definition Coding criteria for the five hospital service lines are provided in … It should be noted that the above definition of injury includes five diagnosis codes that are also included … under two CCS diagnosis categories used for the definition of the mental health service line: CCS

479. Inpatient Stays Involving Mental and Substance Use Disorders, 2016 (pdf file)
     hcup-us.ahrq.gov/reports/statbriefs/sb249-Mental-Substance-Use-Disorder-Hospital-Stays-2016.pdf
     January 01, 2016 - Case definition The ICD-10-CM codes defining MSUD can be found in Appendix B, available as a separate … childhood emotional disorders, unspecified mental disorders complicating pregnancy) Note that the definition … In particular, the opioid definition used here includes only codes for initial encounters and not codes … Introduction Definitions Note that the definition used in this Statistical Brief may differ from that

480. Costs of Pediatric Hospital Stays, 2016 (pdf file)
     hcup-us.ahrq.gov/reports/statbriefs/sb250-Pediatric-Stays-Costs-2016.pdf
     January 01, 2016 - Case definition For this report, the type of pediatric hospital stay was defined with the following