What is the positive predictive value of ICD-10-CM codes for myocarditis in claims data?
ICD-10-CM codes for myocarditis have an acceptable positive predictive value in Taiwanese claims data, validating their use for future secondary database studies.
The PPV of ICD-10-CM codes for myocarditis in Taiwan was acceptable, but some other inflammation diseases and pre-existing heart diseases may be falsely coded as myocarditis. Our results may serve future secondary database studies as a fundamental reference on the validity of myocarditis diagnosis codes.
Wu et al. (Sat,) studied this question.
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