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

Susan Anne Skull, Ross Andrews, G Byrnes, Donald Campbell, Terry Nolan, Graham Brown, Heidi Kelly

Research output: Contribution to journalArticleResearchpeer-review

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 97.1.18.3), 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. � 2007 Cambridge University Press.
Original languageEnglish
Pages (from-to)232-240
Number of pages9
JournalEpidemiology and Infection
Volume136
Issue number2
Publication statusPublished - 2008

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International Classification of Diseases
Pneumonia
Medical Records
Radiology
Tertiary Care Centers
Signs and Symptoms
Thorax

Cite this

Skull, S. A., Andrews, R., Byrnes, G., Campbell, D., Nolan, T., Brown, G., & Kelly, H. (2008). ICD-10 codes are a valid tool for identification of pneumonia in hospitalized patients aged >=65 years. Epidemiology and Infection, 136(2), 232-240.
Skull, Susan Anne ; Andrews, Ross ; Byrnes, G ; Campbell, Donald ; Nolan, Terry ; Brown, Graham ; Kelly, Heidi. / ICD-10 codes are a valid tool for identification of pneumonia in hospitalized patients aged >=65 years. In: Epidemiology and Infection. 2008 ; Vol. 136, No. 2. pp. 232-240.
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Skull, SA, Andrews, R, Byrnes, G, Campbell, D, Nolan, T, Brown, G & Kelly, H 2008, 'ICD-10 codes are a valid tool for identification of pneumonia in hospitalized patients aged >=65 years', Epidemiology and Infection, vol. 136, no. 2, pp. 232-240.

ICD-10 codes are a valid tool for identification of pneumonia in hospitalized patients aged >=65 years. / Skull, Susan Anne; Andrews, Ross; Byrnes, G; Campbell, Donald; Nolan, Terry; Brown, Graham; Kelly, Heidi.

In: Epidemiology and Infection, Vol. 136, No. 2, 2008, p. 232-240.

Research output: Contribution to journalArticleResearchpeer-review

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