What is the difference between the MedDRA English version and Japanese version?
The concept and contents of the Japanese version of MedDRA are exactly the same as English. Due to language, culture, and medical practice, differences between the Japanese and English MedDRA versions exist. The Japanese version of MedDRA, like other translations, contains duplicate translations of terms at the LLT level. However, MedDRA/J provides an additional J-currency field to ensure the MedDRA/J “current” terms are flagged as unique. See http://www.meddramsso.com/MSSOWeb/meddraj/currency.htm for more of an explanation of the MedDRA/J currency criteria.
