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Class steward is Control/Query/MasterFiles
The Message class is the parent class of all HL7 Version 3 messages.
OpenIssue: May need a type code to serve a purpose above and beyond the interaction_id, since the subtypes may not be fully enumerated.
The date/time that the sending system created the message. If the time zone is specified, it will be used throughout the message as the default time zone.
|MSH^7^00007^Date/Time of Message|
The event time attribute allows a significant time for the message to be visible in the outer message envelope.
Unique identifier of message.
|MSA^2^00010^Message Control ID| |MSH^10^00010^Message Control ID|
The interaction identifier is a reference to the unique information interchange derived from the V3 MDF for speciying a message.
OpenIssue: This may be better modeled as an association to the class Interaction (in the meta-model). It is possible that this may supply the type code for the message, or we may need an additional attribute to carry the type code.
|MSH^9^00009^Message Type|
This attribute defines whether the message is part of a production, training, or debugging system. In HL7 Version 2.x, the values for this id were drawn from HL7 table 0103.
|MSH^11^00011^Processing ID|
The message profile identifier allows a given implementation to explicitly state how it varries from the standard message definition
This attribute allows a URL to define the address to which the message reply should be directed.
Unique identifier of the sending application of message.
|MSH^3^00003^Sending Application|
This attribute is provided for implementing the sequence number protocol. This field is incremented by one for each subsequent value assignment.
|MSH^13^00013^Sequence Number|
This attribute is matched by the receiving system to its own versioin to be sure the message will be interpreted correctly.
|MSH^12^00012^Version ID|
This relationship allows the originating organization for an HL7 V3 message to be identified
This relationship allows parameters for a technology specific transport to be represented in the V3 message. outer wrapper.
This connection shows the relationship of the acknowledgement to a specific HL7 V3 message