This link will allow you to download a tool that enables customizing schemas that ship with Microsoft BizTalk Accelerator for HL7.
This is the same tool that the BizTalk team uses internally to generate the schemas that ship with Microsoft BizTalk Accelerator for HL7 v2.0. The tool takes the HL7 message definition from the database that HL7 publishes on their web site and generates schemas in a format that the BizTalk HL7 parser can understand. These schemas are used by the parser in the process of translating from the flat file format of HL7 v2.x to XML.
The HL7 message definitions are stored in a Microsoft Access database and include definitions for all the approved versions (2.1, 2.2, 2.3, 2.3.1, 2.4 and 2.5). The HL7 message definition database will not ship with the Accelerator as ...