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ICD-10 codes are a valid tool for identification of pneumonia in hospitalized patients aged > or = 65 years

Skull, Susan A., Andrews, Ross M., Brynes, G. B., Campbell, Donald A., Nolan, Terence M., Brown, G. V. and Kelly, H. A. (2008). ICD-10 codes are a valid tool for identification of pneumonia in hospitalized patients aged > or = 65 years. Epidemiology and Infection,136(2):232-240.

Document type: Journal Article
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IRMA ID 10619xPUB25
Title ICD-10 codes are a valid tool for identification of pneumonia in hospitalized patients aged > or = 65 years
Author Skull, Susan A.
Andrews, Ross M.
Brynes, G. B.
Campbell, Donald A.
Nolan, Terence M.
Brown, G. V.
Kelly, H. A.
Journal Name Epidemiology and Infection
Publication Date 2008
Volume Number 136
Issue Number 2
ISSN 0950-2688   (check CDU catalogue  open catalogue search in new window)
Start Page 232
End Page 240
Total Pages 9
Place of Publication Cambridge, U.K
Publisher Cambridge University Press
Field of Research 0605 - Microbiology
0799 - Other Agricultural and Veterinary Sciences
1108 - Medical Microbiology
HERDC Category C1 - Journal Article (DEST)
Abstract This study examines the validity of using ICD-10 codes to identify hospitalized pneumonia cases. Using a case-cohort design, subjects were randomly selected from monthly cohorts of patients aged 65 years discharged from April 2000 to March 2002 from two large tertiary Australian hospitals. Cases had ICD-10-AM codes J10–J18 (pneumonia); the cohort sample was randomly selected from all discharges, frequency matched to cases by month. Codes were validated against three comparators: medical record notation of pneumonia, chest radiograph (CXR) report and both. Notation of pneumonia was determined for 5098/5101 eligible patients, and CXR reports reviewed for 3349/3464 (97%) patients with a CXR. Coding performed best against notation of pneumonia: kappa 0·95, sensitivity 97·8% (95% CI 97·1–98·3), specificity 96·9% (95% CI 96·2–97·5), positive predictive value (PPV) 96·2% (95% CI 95·4–97·0) and negative predictive value (NPV) 98·2% (95% CI 97·6–98·6). When medical record notation of pneumonia is used as the standard, ICD-10 codes are a valid method for retrospective ascertainment of hospitalized pneumonia cases and appear superior to use of complexes of symptoms and signs, or radiology reports.
DOI http://dx.doi.org/10.1017/S0950268807008564   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)


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