ArticleMedical care2017
Validity of Using Inpatient and Outpatient Administrative Codes to Identify Acute Venous Thromboembolism: The CVRN VTE Study.
Article in Medical care, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 91 papers, 1 of them a synthesis that pooled it.
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Who cites it
91 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Machine learning natural language processing for identifying venous thromboembolism: systematic review and meta-analysis.Blood advances · 2024Pooled it
- Initiation of an emergency department discharge pathway for low-risk patients with venous thromboembolism: Factors impact real-world practice.Vascular medicine (London, England) · 2026Article
- Incidence of Deep Vein Thrombosis and Pulmonary Embolism in Patients with Hidradenitis Suppurativa.Dermatology and therapy · 2026Article
- Current practices of index hospitalization anticoagulant use in pediatric patients with acute myeloid leukemia.Blood vessels, thrombosis & hemostasis · 2026Article
- External validation of the Intermountain Risk Scores for postdischarge thrombosis and bleeding in an independent population.Research and practice in thrombosis and haemostasis · 2026Article
- National trends in venous thromboembolism incidence in Ireland (2015-2022): a retrospective analysis.Research and practice in thrombosis and haemostasis · 2026Observational
- Challenges in Venous Thromboembolism Risk Stratification After Pancreatic and Liver Cancer Surgery Using Claims Data.Journal of surgical oncology · 2026Article
- Triglyceride-glucose body mass index and risk of incident venous thromboembolism: a prospective cohort study from the UK Biobank.European journal of medical research · 2026Article
- Explainable Machine Learning for Predicting Deep Vein Thrombosis in Critically Ill Patients with COPD: Development and Multicenter External Validation.International journal of chronic obstructive pulmonary disease · 2026Article
- Cardiovascular Risks of Aromatase Inhibitors versus Tamoxifen in Postmenopausal Breast Cancer: A Multinational Cohort Study.Clinical epidemiology · 2026Article
- Venous thromboembolism diagnosis definition in claims data: implications for research.Journal of thrombosis and thrombolysis · 2025Article
- Patient age at diagnosis and biological sex in association with postoperative outcomes of thyroidectomy for low-risk papillary thyroid cancer in the U.S. Military Health System.Gland surgery · 2025Article
- Short-term surgical outcomes in patients with early- versus average-onset colon adenocarcinoma in the Military Health System.JNCI cancer spectrum · 2025Article
- Short-Term Outcomes of Breast Cancer Surgery by Race-Ethnicity in the Military Health System.Annals of surgical oncology · 2025Article
- Comparative safety and effectiveness of apixaban and rivaroxaban for treatment of cancer-associated venous thromboembolism: A retrospective cohort study.PLoS medicine · 2025Article
- Rates of acute pancreatitis and cardiovascular events among adults with severe or extreme hypertriglyceridemia in US clinical practice.Lipids in health and disease · 2025Article
- Using a transformer language model to curate a pulmonary embolism dataset from the Medical Information Mart for Intensive Care IV: MIMIC-IV-Ext-PE.Research and practice in thrombosis and haemostasis · 2025Article
- Validation of Algorithms to Detect Acute and Disseminated Lyme Disease in U.S. Administrative Claims Data.Open forum infectious diseases · 2025Article
- Association of anticoagulant choice with death in the primary treatment of noncancer venous thromboembolism: Medicare 2011-2018.American journal of epidemiology · 2025Article
- Observational
31 more citing papers are in PubMed but not listed here.
Corrections and comments
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Authors and funding
8 authors.
Funding
Abstract
backgroundAdministrative data are frequently used to identify venous thromboembolism (VTE) for research and quality reporting. However, the validity of these codes, particularly in outpatients, has not been well-established.
objectiveTo determine how well International Classification of Diseases, Ninth Revision (ICD-9) codes for VTE predict chart-confirmed acute VTE in inpatient and outpatients. PATIENTS AND
methodsWe selected 4642 adults with an incident ICD-9 diagnosis of VTE between years 2004 and 2010 from the Cardiovascular Research Network Venous Thromboembolism cohort study. Medical charts were reviewed to determine validity of events. Positive predictive values (PPVs) of ICD-9 codes were calculated as the number of chart-validated VTE events divided by the number with specific VTE codes. Analyses were stratified by VTE type [pulmonary embolism (PE), deep venous thrombosis (DVT)], code position (primary, secondary), and setting [hospital/emergency department (ED), outpatient].
resultsThe PPV for any diagnosis of VTE was 64.6% for hospital/ED patients and 30.9% for outpatients. Primary diagnosis codes from hospital/ED patients were more likely to represent acute VTE than secondary diagnosis codes (78.9% vs. 44.4%, P<0.001). Primary hospital/ED codes for PE and lower extremity DVT had higher PPV than for upper extremity DVT (89.1%, 74.9%, and 58.1%, respectively). Outpatient codes were poorly predictive of acute VTE: 28.0% for PE and 53.6% for lower extremity DVT.
conclusionsICD-9 codes for VTE obtained from outpatient encounters or from secondary diagnosis codes do not reliably reflect acute VTE. More accurate ways of identifying VTE in outpatients are needed before these codes can be adopted for research or policy purposes.
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