Validation of ICD-10-CM diagnosis codes for identifying COVID-19 cases using administrative claims data in Taiwan
Wei-Lun Chang, Chia-Ling Wu, Cheng-Hsun Chiu, Yu-Tung Huang · 2026
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Description
Wei-Lun Chang and co-authors report a 2026 study that checks a billing code for COVID-19 in Taiwan. Studies that use claims data need a code that truly marks who had the disease. The team tested the main code against lab test results.
Claims from 2022 were linked to lab records across many sites, with more than 127,000 visits in all. The code was right in most flagged cases and almost never flagged a healthy visit. Yet it caught only about a quarter of true cases overall. Catch rates were far higher for hospital stays and for adults over 80. Rates dipped at the peak of the wave, when rapid tests took over from lab tests.
Catalog record
| CREATOR | Wei-Lun Chang, Chia-Ling Wu, Cheng-Hsun Chiu, Yu-Tung Huang |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 26 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |