The OmniComm AutoEncoder supports MedDRA and all variants of WHODrug, including the Enhanced and Herbal versions, and formats B2, B3 and C3. The dictionaries are loaded from the standard source files supplied by the respective dictionary vendors. New versions may be loaded as they are released. In addition, an administrator can load any number of “synonym lists” against each dictionary. For example, a synonym list can include common misspellings of standard terms. A trial can be configured to use any number of these synonym lists, in a specified order. For example, the first synonym list could be specific to the therapeutic area for the trial, while the second could be an organization-wide synonym list.