IMHO, the HL7 specification isn't particularly strong. Different vendors support different message types, some vendors fill in this field, some another. Most of

IMHO, the HL7 specification isn't particularly strong. Different vendors support different message types, some vendors fill in this field, some another. Most of the work I did with HL7 was making sure System A could read the messages we were passing it from System B by "translating" the HL7 messages. That said, there are open HL7 message "interface engines" and integrating with something like Mirth[0] shouldn't be too difficult. [0] https://www.mirth.com/Products-and-Services/Mirth-Connect https://www.mirth.com/Products-and-Services/Mirth-Connect