Thank you for your email. Twice per year we do a bulk import of terminologies distributed by the UMLS . (They have a twice per year release schedule, e.g., for this year it will be 2020AA and 2020AB. Their release schedule is usually May and
November). MEDDRA is one of the vocabularies contained in the UMLS distribution.
The UMLS metadata page for MEDDRA  shows the version to be MDR22_0 (Version 22.0). Hope this is what you were looking for.