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ICD-9 code validation

Rikinkumar S Patel, Priya Patel, Kaushal Shah, Mandeep Kaur, Zeeshan Mansuri, Ramkrishna Makani
Objective To determine the impact of cannabis use disorder (CUD) on the inpatient outcomes of attention deficit hyperactivity disorder (ADHD) in adolescents Background Previous studies have evaluated the impact of CUD on the health-related quality of life in ADHD patients. Methods We used the nationwide inpatient sample (NIS) from the Healthcare Cost and Utilization Project (HCUP) from years 2010--2014. We identified ADHD and cannabis use (CU) as the primary and the other diagnosis, respectively, using validated International Classification of Diseases, 9th Revision, and Clinical Modification (ICD-9--CM) codes...
January 7, 2018: Curēus
Patricia P Chang, Lisa M Wruck, Eyal Shahar, Joseph S Rossi, Laura R Loehr, Stuart D Russell, Sunil K Agarwal, Suma H Konety, Carlos J Rodriguez, Wayne D Rosamond
Background -Community trends of acute decompensated heart failure (ADHF) in diverse populations may differ by race and sex. Methods -The Atherosclerosis Risk in Communities (ARIC) Study sampled heart failure related hospitalizations (age ≥55 years) in four US communities from 2005-2014 using ICD-9-CM codes. ADHF hospitalizations were validated by standardized physician review and computer algorithm, yielding 40,173 events after accounting for sampling design (unweighted n=8746). Results -Of the ADHF hospitalizations, 50% had reduced ejection fraction (HFrEF), 39% had preserved EF (HFpEF)...
March 8, 2018: Circulation
Tamara D Simon, Wren Haaland, Katherine Hawley, Karen Lambka, Rita Mangione-Smith
OBJECTIVES: To modify the Pediatric Medical Complexity Algorithm (PMCA) to include both International Classification of Diseases, Ninth and Tenth Revision, Clinical Modification (ICD-9/10-CM) codes for classifying children with chronic disease (CD) by level of medical complexity; and to assess the sensitivity and specificity of the new PMCA Version 3.0 for correctly identifying level of medical complexity. METHODS: To create Version 3.0, PMCA Version 2.0 was modified to include ICD-10-CM codes...
February 26, 2018: Academic Pediatrics
Naveed Zafar Janjua, Nazrul Islam, Margot Kuo, Amanda Yu, Stanley Wong, Zahid A Butt, Mark Gilbert, Jane Buxton, Nuria Chapinal, Hasina Samji, Mei Chong, Maria Alvarez, Jason Wong, Mark W Tyndall, Mel Krajden
BACKGROUND: Large linked healthcare administrative datasets could be used to monitor programs providing prevention and treatment services to people who inject drugs (PWID). However, diagnostic codes in administrative datasets do not differentiate non-injection from injection drug use (IDU). We validated algorithms based on diagnostic codes and prescription records representing IDU in administrative datasets against interview-based IDU data. METHODS: The British Columbia Hepatitis Testers Cohort (BC-HTC) includes ∼1...
February 23, 2018: International Journal on Drug Policy
Yasmin D Hailer, Nils P Hailer
BACKGROUND: Osteochondrosis includes numerous diseases that occur during rapid growth, characterized by disturbances of endochondral ossification. One example, Legg-Calvé-Perthes disease, is characterized by disruption of the blood supply to the femoral head epiphysis, and a systemic etiology often has been suggested. If this were the case, secondary osteochondroses at locations other than the hip might be expected to be more common among patients with Legg-Calvé-Perthes disease, but to our knowledge, this has not been evaluated in a nationwide sample...
February 23, 2018: Clinical Orthopaedics and related Research
Ravikanth Papani, Gulshan Sharma, Amitesh Agarwal, Sean J Callahan, Winston J Chan, Yong-Fang Kuo, Yun M Shim, Andrew D Mihalek, Alexander G Duarte
Administrative claims studies do not adequately distinguish pulmonary arterial hypertension (PAH) from other forms of pulmonary hypertension (PH). Our aim is to develop and validate a set of algorithms using International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) codes and electronic medical records (EMR), to identify patients with PAH. From January 2012 to August 2015, the EMRs of patients with ICD-9-CM codes for PH with an outpatient visit at the University of Texas Medical Branch were reviewed...
April 2018: Pulmonary Circulation
Huabin Luo, Sundar Shrestha, Xinzhi Zhang, Jinan Saaddine, Xiaoming Zeng, Timothy Reeder
PURPOSE: To describe the trends in eye injuries and associated medical costs among children in the United States. METHODS: Data were from the 2002-2014 Medical Expenditure Panel Survey (MEPS). Eye injuries in children aged <18 years were identified by the International Classification of Diseases-9 (ICD-9) codes. The trends of cumulative incidence of eye injury, total costs, and average costs were estimated from 2002-2014 MEPS data. All costs were adjusted to 2014 US dollars...
February 23, 2018: Ophthalmic Epidemiology
Eric M Ammann, Adam Cuker, Ryan M Carnahan, Usha S Perepu, Scott K Winiecki, Marin L Schweizer, Charles E Leonard, Candace C Fuller, Crystal Garcia, Cole Haskins, Elizabeth A Chrischilles
The Sentinel Distributed Database (SDD) is a database of patient administrative healthcare records, derived from insurance claims and electronic health records, sponsored by the US Food and Drug Administration for evaluation of medical product outcomes. There is limited information on the validity of diagnosis codes for acute venous thromboembolism (VTE) in the SDD and administrative healthcare data more generally.In this chart validation study, we report on the positive predictive value (PPV) of inpatient administrative diagnosis codes for acute VTE-pulmonary embolism (PE) or lower-extremity or site-unspecified deep vein thrombosis (DVT)-within the SDD...
February 2018: Medicine (Baltimore)
Eric M Ammann, Marin L Schweizer, Jennifer G Robinson, Jayasheel O Eschol, Rami Kafa, Saket Girotra, Scott K Winiecki, Candace C Fuller, Ryan M Carnahan, Charles E Leonard, Cole Haskins, Crystal Garcia, Elizabeth A Chrischilles
BACKGROUND: The Sentinel Distributed Database (SDD) is a large database of patient-level administrative health care records, primarily derived from insurance claims and electronic health records, and is sponsored by the US Food and Drug Administration for medical product safety evaluations. Acute myocardial infarction (AMI) is a common study endpoint for drug safety studies that rely on health records from the SDD and other administrative databases. PURPOSE: In this chart validation study, we report on the positive predictive value (PPV) of inpatient International Classification of Diseases, Ninth Revision, Clinical Modification AMI administrative diagnosis codes (410...
February 15, 2018: Pharmacoepidemiology and Drug Safety
Yizhao Ni, Kathleen Alwell, Charles J Moomaw, Daniel Woo, Opeolu Adeoye, Matthew L Flaherty, Simona Ferioli, Jason Mackey, Felipe De Los Rios La Rosa, Sharyl Martini, Pooja Khatri, Dawn Kleindorfer, Brett M Kissela
OBJECTIVE: 1) To develop a machine learning approach for detecting stroke cases and subtypes from hospitalization data, 2) to assess algorithm performance and predictors on real-world data collected by a large-scale epidemiology study in the US; and 3) to identify directions for future development of high-precision stroke phenotypic signatures. MATERIALS AND METHODS: We utilized 8,131 hospitalization events (ICD-9 codes 430-438) collected from the Greater Cincinnati/Northern Kentucky Stroke Study in 2005 and 2010...
2018: PloS One
Naveed Afzal, Vishnu Priya Mallipeddi, Sunghwan Sohn, Hongfang Liu, Rajeev Chaudhry, Christopher G Scott, Iftikhar J Kullo, Adelaide M Arruda-Olson
BACKGROUND: Critical limb ischemia (CLI) is a complication of advanced peripheral artery disease (PAD) with diagnosis based on the presence of clinical signs and symptoms. However, automated identification of cases from electronic health records (EHRs) is challenging due to absence of a single definitive International Classification of Diseases (ICD-9 or ICD-10) code for CLI. METHODS AND RESULTS: In this study, we extend a previously validated natural language processing (NLP) algorithm for PAD identification to develop and validate a subphenotyping NLP algorithm (CLI-NLP) for identification of CLI cases from clinical notes...
March 2018: International Journal of Medical Informatics
Eric M Ammann, Enrique C Leira, Scott K Winiecki, Nandakumar Nagaraja, Sudeepta Dandapat, Ryan M Carnahan, Marin L Schweizer, James C Torner, Candace C Fuller, Charles E Leonard, Crystal Garcia, Madelyn Pimentel, Elizabeth A Chrischilles
The Sentinel Distributed Database (SDD) is a large database of patient-level medical and prescription records, primarily derived from insurance claims and electronic health records, and is sponsored by the U.S. Food and Drug Administration for drug safety assessments. In this chart validation study, we report on the positive predictive value (PPV) of inpatient ICD-9-CM acute ischemic stroke (AIS) administrative diagnosis codes (433.x1, 434.xx, and 436) in the SDD.As part of an assessment of the risk of thromboembolic adverse events following treatment with intravenous immune globulin (IGIV), charts were obtained for 131 potential post-IGIV AIS cases...
December 2017: Medicine (Baltimore)
Alexander J Butwick, Eileen M Walsh, Michael Kuzniewicz, Sherian X Li, Gabriel J Escobar
BACKGROUND: Determining the accuracy of International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9) codes for postpartum hemorrhage (PPH) is vital for reaching valid conclusions about the epidemiology of PPH. Our primary objectives were to assess the performance characteristics of ICD-9 PPH codes against a reference standard using estimated blood loss (EBL) among a cohort undergoing Cesarean delivery. STUDY DESIGN AND METHODS: We analyzed maternal discharge and EBL data from women who underwent Cesarean delivery at Kaiser Permanente Northern California facilities between 2010 and 2013...
January 26, 2018: Transfusion
Pietro Manuel Ferraro, Gianmarco Lombardi, Alessandro Naticchia, Antonio Sturniolo, Cecilia Zuppi, Valerio De Stefano, Patrizia Bonelli, Ruggero Buonocore, Gianfranco Cervellin, Giuseppe Lippi, Giovanni Gambaro
Aim of the study was the definition of a predictive model for the initial diagnosis of thrombotic microangiopathies (TMA). We retrospectively collected data on all adult patients admitted to the Gemelli Hospital from 2010 to 2014. ICD-9 codes from primary diagnoses were used for TMA diagnosis. Demographic and laboratory characteristics on admission of patients with TMA were then compared with a random sample of 500 patients with other diagnoses. The prediction model was externally validated in a cohort from another hospital...
January 20, 2018: Journal of Nephrology
Shelby K Shelton, Steve B Chukwulebe, David F Gaieski, Benjamin S Abella, Brendan G Carr, Sarah M Perman
AIM: International classification of disease (ICD-9) code 427.5 (cardiac arrest) is utilized to identify cohorts of patients who suffer out-of-hospital cardiac arrest (OHCA), though the use of ICD codes for this purpose has never been formally validated. We sought to validate the utility of ICD-9 code 427.5 by identifying patients admitted from the emergency department (ED) after OHCA. METHODS: Adult visits to a single ED between January 2007 and July 2012 were retrospectively examined and a keyword search of the electronic medical record (EMR) was used to identify patients...
January 13, 2018: Resuscitation
Abigail Khan, Katrina Ramsey, Cody Ballard, Emily Armstrong, Luke J Burchill, Victor Menashe, George Pantely, Craig S Broberg
BACKGROUND: Administrative data sets utilize billing codes for research and quality assessment. Previous data suggest that such codes can accurately identify adults with congenital heart disease (CHD) in the cardiology clinic, but their use has yet to be validated in a larger population. METHODS AND RESULTS: All administrative codes from an entire health system were queried for a single year. Adults with a CHD diagnosis code (International Classification of Diseases, Ninth Revision, (ICD-9) codes 745-747) defined the cohort...
January 12, 2018: Journal of the American Heart Association
Amandeep Singh, Phuc Le, Rocio Lopez, Naim Alkhouri
GOALS: The aim of our study is to assess the prevalence of nonalcoholic fatty liver disease (NAFLD) and advanced hepatic fibrosis in patients with type 1 diabetes (T1D) using simple noninvasive scores. BACKGROUND: There is paucity of data on the prevalence of NAFLD in T1D. Moreover, T1D could be a risk factor for advanced disease in NAFLD patients. STUDY: Using ICD-9 codes, all patients with the diagnosis of T1D were reviewed and a retrospective chart analysis was carried out on 23,314 patients between the ages of 18 and 80...
January 2018: Hepatology International
Duc Anh Ngo, Nassima Ait-Daoud, Saumitra V Rege, Christopher Ding, Lauren Gallion, Susan Davis, Christopher P Holstege
BACKGROUND: Few studies have explored the epidemiology of students presenting to the emergency department (ED) as a consequence of hazardous drinking. This study examined differentials and trends in ED visits following alcohol intoxication and co-occurring conditions among students presenting to a major U.S. university health system. METHODS: The ED electronic medical records from academic years 2010-2015 were queried for student visits and their records were linked to the university's student admission datasets...
December 9, 2017: Drug and Alcohol Dependence
Jill J Savla, Brian T Fisher, Jennifer A Faerber, Yuan-Shung V Huang, Laura Mercer-Rosa
BACKGROUND: The surgical strategy for neonates with tetralogy of Fallot (TOF) consists of complete or staged repair. Assessing the comparative effectiveness of these approaches is facilitated by a large multicenter cohort. We propose a novel process for cohort assembly using the Pediatric Health Information System (PHIS), an administrative database that contains clinical and billing data for inpatient and emergency department stays from tertiary children's hospitals. METHODS: A 4-step process was used to identify neonates with TOF: (1) screen neonates in PHIS with International Classification of Diseases-9 (ICD-9) diagnosis or procedure codes for TOF; (2) include patients with TOF procedures before 30 days of age; (3) exclude patients with missing 2-year follow-up data; (4) analyze patients' 2-year surgery sequence patterns, exclude patients inconsistent with a treatment strategy for TOF, and designate patients as complete or staged repair...
December 12, 2017: Medical Care
Chongthawonsatid Sukanya
Objectives: This study examined the validity of the principal diagnoses on discharge summaries and coding assessments. Methods: Data were collected from the National Health Security Office (NHSO) of Thailand in 2015. In total, 118,971 medical records were audited. The sample was drawn from government hospitals and private hospitals covered by the Universal Coverage Scheme in Thailand. Hospitals and cases were selected using NHSO criteria. The validity of the principal diagnoses listed in the "Summary and Coding Assessment" forms was established by comparing data from the discharge summaries with data obtained from medical record reviews, and additionally, by comparing data from the coding assessments with data in the computerized ICD (the data base used for reimbursement-purposes)...
October 2017: Healthcare Informatics Research
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