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- Title
Diagnostic Accuracy of Administrative Database for Bile Duct Cancer by International Classification of Diseases, 10th Revision Edition Codes in a Tertiary Institute In Korea.
- Authors
Young-Jae Hwang; Seon Mee Park; Soomin Ahn; Jongchan Lee; Young Soo Park; Nayoung Kim
- Abstract
Background/Aims Administrative database provides valuable information for large cohort studies, especially when tissue diagnosis is rather difficult such as the diagnosis for bile duct cancer (BDC). However, studies regarding accuracy of administrative database for BDC have not been reported. The aim of this study was to evaluate the diagnostic accuracy of administrative database for BDC by International Classification of Diseases (ICD)-10 codes in a tertiary institute. Methods Study and control groups were collected from 2003 to 2016 at Seoul National University Bundang Hospital. Cases of BDC were identified in the National Health Insurance Service (NHIS) database by ICD-10 code supported by V code. The control group was selected from cases without ICD-10 codes for BDC. A definite or possible diagnosis was defined according to pathologic reports. Medical records, images, and pathology reports were analyzed to evaluate ICD-10 codes for BDC. Sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) for BDC were analyzed according to diagnostic criteria and cancer locations. Results A total of 1,707 patients with BDC and 1,707 controls were collected. Among those with BDC, 1,320 patients (77.4%) were diagnosed by definite criteria. Most (99.4%) of them had adenocarcinoma. Rate of definite diagnosis was the highest for ampulla of Vater (AOV, 88.9%), followed by that for extrahepatic (85.0%) and intrahepatic (68.4%) BDCs. False positive cases commonly had hepatocellular carcinomas. For overall diagnosis of BDC, sensitivity, specificity, PPV, and NPV were 99.94%, 98.33%, 98.30%, and 99.94%, respectively. Diagnostic accuracies were similar regardless of diagnostic criteria or tumor locations. Conclusions Administrative database for BDC identified by ICD-10 code and NHIS provided very useful information regarding tumor location in relation to AOV and histology of BDC.
- Subjects
SOUTH Korea; BILIARY tract cancer; INTERNATIONAL Statistical Classification of Diseases &; Related Health Problems; TUMOR classification; NOSOLOGY; SOUL Taehakkyo; NATIONAL health insurance; NATIONAL health services
- Publication
Gut & Liver, 2019, Vol 13, Issue 6(suppl. 1), p197
- ISSN
1976-2283
- Publication type
Article