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221. HEALTHCARE COST AND UTILIZATION PROJECT (HCUP) E CODE EVALUATION (pdf file)
     hcup-us.ahrq.gov/reports/methods/2013_02.pdf
     January 01, 2013 - topicId=24 HCUP (06/13/2013) 2 Evaluation of E Codes METHODS We defined injury records using … Records with injuries are identified by ICD-9-CM diagnoses and E codes using the scheme recommended … ICD-9-CM Codes Used to Identify Injury Records ICD-9-CM Diagnosis Codes Description 800-909.2, … Percentage of injury records with an injury E code Percentage of injury records without an injury … Percentage of injury records with an injury E code Percentage of injury records without an injury

222. Introduction To The HCUP Nationwide Readmission Database (NRD) 2021 (pdf file)
     hcup-us.ahrq.gov/db/nation/nrd/NRDIntroduction2021.pdf
     March 01, 2024 - ” record. … “combined” record in the NRD and the original separate discharge records were removed from the NRD. … Records that were part of transfers or same-day stays were collapsed into a single combined record. … Creating a Combined Transfer Record Combining information across transfer and same-day stay records … • Use last record.

223. HEALTHCARE COST AND UTILIZATION PROJECT — HCUP (pdf file)
     hcup-us.ahrq.gov/db/nation/neds/NEDS2014Introduction.pdf
     December 12, 2016 - The HCUP criteria for identifying an ED record (i.e., a discharge record for a patient with an ED event … to be ED records, even though information was not available on the record to determine if the HCUP … • The NEDS contains event-level records, not patient-level records. … , record length, and record layout • Nationwide SAS Load Programs • Nationwide SPSS Load Programs … Record identifier, synthetic KEY_ED Unique HCUP NEDS record number – links to NEDS Supplemental

224. HEALTHCARE COST AND UTILIZATION PROJECT — HCUP (pdf file)
     hcup-us.ahrq.gov/db/nation/neds/NEDS2018Introduction.pdf
     November 01, 2020 - on the record. … The HCUP criterion for identifying an ED record (i.e., a discharge record for a patient with an ED visit … • The NEDS contains encounter-level records, not patient-level records. … , record length, and record layout • Nationwide SAS Load Programs • Nationwide SPSS Load Programs … Record identifier, synthetic KEY_ED Unique HCUP NEDS record number—links to NEDS Supplemental Files

225. Enhanced State Data for Analysis and Tracking of Comparative Effectiveness Impact
     hcup-us.ahrq.gov/datainnovations/nm.jsp
     October 01, 2010 - Linkage of electronic hospital discharge records with birth certificate records and Indian Health Service … records periodically will track improvements in the reliability of race, ethnicity and tribal identifier … following discharge to compare their race, ethnicity and tribal identifier by self-report with hospital records

226. Nis Sources And Restrictions 2000 (pdf file)
     hcup-us.ahrq.gov/db/nation/nis/NIS_Sources_and_Restrictions_2000.pdf
     January 01, 2000 - Restrictions 2000 FL Florida Agency for Health Care Administration Confidentiality of Records … Restrictions Sources of NIS Data and State-Specific Restrictions 2000 Confidentiality of Records … Confidentiality of Records Massachusetts requested the following variable be set to missing: … Confidentiality of Records South Carolina requested that the following variable be set to missing … HIV or drug/alcohol use patients are identified by any principal or secondary diagnosis code on the record

227. Microsoft Word - KID_Sources_and_Restrictions_2000.doc (pdf file)
     hcup-us.ahrq.gov/db/nation/kid/KID_Sources_and_Restrictions_2000.pdf
     January 01, 2000 - Confidentiality of Records CHIME requested the following variables be set to missing: Sources … Admission month FL Florida Agency for Health Care Administration Confidentiality of Records … Confidentiality of Records Massachusetts requested the following variables be set to missing: … Confidentiality of Records South Carolina requested that the following variables be set to missing … HIV or drug/alcohol use patients are identified by any principal or secondary diagnosis code on the record

228. Addendum to HCUP Statistical Brief #308: Rural and Urban Hospital Differences in Inpatient Stays Involving Sepsis, 2019 and 2021, Addition of 2022 Data (pdf file)
     hcup-us.ahrq.gov/reports/statbriefs/sb308-hospital-sepsis-2019-2022-addendum.pdf
     January 01, 2022 - Less than one percent of records for rural hospitals were missing safety-net status. … Less than one percent of records for rural hospitals were missing safety-net status. … Less than one percent of records for rural hospitals were missing safety-net status. … Less than one percent of records for rural hospitals were missing safety-net status. … Records missing patient age information were included in this group because it was the largest of the

229. THE HCUP NATIONWIDE EMERGENCY DEPARTMENT SAMPLE (NEDS), 2014
     hcup-us.ahrq.gov/db/nation/neds/NEDS_Introduction_2014.jsp
     January 01, 2014 - reported on the record. … The HCUP criteria for identifying an ED record (i.e., a discharge record for a patient with an ED event … to be ED records, even though information was not available on the record to determine if the HCUP criteria … , record length, and record layout Nationwide SAS Load Programs Nationwide SPSS Load Programs … Record identifier, synthetic KEY_ED Unique HCUP NEDS record number — links to NEDS Supplemental files

230. SID File Composition
     hcup-us.ahrq.gov/db/state/siddist/sid_multi.jsp
     August 01, 2025 - includes the source of the original data files, the types of hospitals included in those files, the records … Therefore, the SID may include records for inpatient stays that began in the ED or in observation. … Inpatient records with evidence of ED services or OS can be identified using two separate HCUP variables

231. NIS Trend Weights
     hcup-us.ahrq.gov/db/nation/nis/trendwghts.jsp
     June 01, 2024 - three major types of changes: Revisions to the sample design—the NIS is now a sample of discharge records … . 1994 34,622,203 33,149,768 -1,472,435 33,148,180 1,588 HCUPnet removed outlier records … . 1995 34,791,998 33,647,121 -1,144,877 33,644,908 2,213 HCUPnet removed outlier records … . 1996 34,874,386 33,386,097 -1,488,289 33,384,374 1,723 HCUPnet removed outlier records … . 1997 35,408,207 33,232,257 -2,175,950 33,230,554 1,703 HCUPnet removed outlier records

232. THE HCUP NATIONWIDE EMERGENCY DEPARTMENT SAMPLE (NEDS), 2009
     hcup-us.ahrq.gov/db/nation/neds/NEDS_Introduction_2009.jsp
     January 01, 2009 - reported on the record. … The HCUP criteria for identifying an ED record (i.e., a discharge record for a patient with an ED event … The NEDS contains event -level records, not patient -level records. … , record length, and record layout   Load Programs Programs to load the ASCII data files … Record identifier, synthetic KEY_ED Unique HCUP NEDS record number – links to NEDS Supplemental files

233. Healthcare Cost and Utilization Project (HCUP) NIS Notes
     hcup-us.ahrq.gov/db/vars/dqtr/nisnote.jsp
     September 01, 2008 - Florida Beginning in 2004, Florida supplied discharge dates for all records. … sampled one fourth of the Massachusetts NIS discharges from the first three quarters and modified the records … diagnosis group for the principal diagnosis, sex, age, and a random number before selecting every fourth record … The following describes the adjustments made to the selected Massachusetts NIS records: We relabeled … We then adjusted the discharge weights for the Massachusetts records to appropriately account for the

234. Healthcare Cost and Utilization Project (HCUP) KID Notes
     hcup-us.ahrq.gov/db/vars/dqtr/kidnote.jsp
     September 01, 2008 - Florida Beginning in 2004, Florida supplied discharge dates for all records. … sampled one fourth of the Massachusetts NIS discharges from the first three quarters and modified the records … diagnosis group for the principal diagnosis, sex, age, and a random number before selecting every fourth record … The following describes the adjustments made to the selected Massachusetts NIS records: We relabeled … We then adjusted the discharge weights for the Massachusetts records to appropriately account for the

235. Healthcare Cost and Utilization Project (HCUP) KID Notes
     hcup-us.ahrq.gov/db/vars/drg/kidnote.jsp
     September 01, 2008 - The DRG Grouper does not recognize the "V300" code on October 1, 1989 and therefore groups the record … The following number of records are affected: 1 record in 1989 and 1 record in 1990. … The following number of records are affected: for 1988, 34 records; for 1989, 30 records; for … 1990, 44 records; and for 1991, 33 records. … System problems at the hospital caused the last procedure coded on the medical record to be stored as

236. THE HCUP NATIONWIDE READMISSIONS DATABASE (NRD), 2014
     hcup-us.ahrq.gov/db/nation/nrd/NRD_Introduction_2010-2014.jsp
     January 01, 2014 - "combined" record in the NRD and removed the original separate discharge records from the NRD. … " record. … "combined" record in the NRD and removed the original separate discharge records from the NRD. … We collapsed records that were part of transfers or same-day stays into a single combined record. … Creating a Combined Transfer Record Combining information across transfer and same-day stay records

237. HEALTHCARE COST AND UTILIZATION PROJECT — HCUP (pdf file)
     hcup-us.ahrq.gov/db/nation/neds/NEDS2010Introductionv3.pdf
     November 01, 2015 - reported on the record. … The HCUP criteria for identifying an ED record (i.e., a discharge record for a patient with an ED event …  The NEDS contains event-level records, not patient-level records. … , record length, and record layout Load Programs Programs to load the NEDS CSV data files into … Record identifier, synthetic KEY_ED Unique HCUP NEDS record number – links to NEDS Supplemental

238. THE HCUP NATIONWIDE EMERGENCY DEPARTMENT SAMPLE (NEDS), 2010
     hcup-us.ahrq.gov/db/nation/neds/NEDS_Introduction_2010.jsp
     January 01, 2010 - reported on the record. … The HCUP criteria for identifying an ED record (i.e., a discharge record for a patient with an ED event … The NEDS contains event -level records, not patient -level records. … , record length, and record layout   Load Programs Programs to load the NEDS CSV data files … Record identifier, synthetic KEY_ED Unique HCUP NEDS record number — links to NEDS Supplemental files

239. HEALTHCARE COST AND UTILIZATION PROJECT (HCUP) E CODE EVALUATION (pdf file)
     hcup-us.ahrq.gov/reports/methods/2015-03.pdf
     January 01, 2015 - METHODS We defined injury records using only the first-listed diagnosis (DX1). … Records with injuries are identified by ICD-9-CM diagnoses and E codes using the scheme recommended … ICD-9-CM Codes Used to Identify Injury Records ICD-9-CM Diagnosis Codes Description 800-909.2, … Percentage of injury records with an injury E code Percentage of injury records without an injury … Percentage of injury records with an injury E code Percentage of injury records without an injury

240. Race and Ethnicity Data Improvement Toolkit
     hcup-us.ahrq.gov/datainnovations/raceethnicitytoolkit/data_improve_linkages.jsp
     February 01, 2025 - Data sources can be examined to eliminate duplicate records, to identify under-reporting and missing … Data linkage can be accomplished manually (by visually comparing records from two separate sources) but … this approach becomes time consuming, tedious, inefficient, and unpractical as the number of records … traditional, exact matching methods when coding errors, reporting variations, missing data, or duplicate records … Data Linkage Strategies Record Linkage Concepts ( PDF file, 678 KB; HTML ) A presentation on the