HL7 messaging standard
The HL7 messaging standard defines the structure and content of messages that are exchanged between systems in various administrative, financial, and clinical activities in the healthcare industry.
HL7 v2 messages can be modeled by using DFDL or MRM Tagged/Delimited String Format (TDS).
HL7 v3 messages can be modeled by using XML schemas.
Predefined MRM message sets for HL7 v2 are included in the IBM Integration Bus Healthcare Pack .
Predefined XML schemas for HL7 v3 are available from the Health Level Seven International website (www.HL7.org).