http://hl7.org/fhir/StructureDefinition/MessageHeader|4.0.1

The header for a message exchange that is either requesting or responding to an action. The reference(s) that are the subject of the action as well as other information related to the action are typically transmitted in a bundle in which the MessageHeader resource instance is the first resource in the bundle.

Structure JSON Dependencies FHIRSchema Other Versions Dependant (0)Elements Summary

Name	Flags	Card	Type	Description & Constraints
MessageHeader		0..*		A resource that describes a message that is exchanged between systems
event[x] *	Σ	1..1		Code for the event this message represents or link to event definition MessageEvent (example)
eventCoding *	Σ	1..1	Coding	MessageEvent (example)
eventUri *	Σ	1..1	uri	MessageEvent (example)
destination	Σ	0..*	BackboneElement	Message destination application(s)
name	Σ	0..1	string	Name of system
target	Σ	0..1	Reference	Particular delivery destination within the destination
endpoint *	Σ	1..1	url	Actual destination address or id
receiver	Σ	0..1	Reference	Intended \"real-world\" recipient for the data
sender	Σ	0..1	Reference	Real world sender of the message
enterer	Σ	0..1	Reference	The source of the data entry
author	Σ	0..1	Reference	The source of the decision
source *	Σ	1..1	BackboneElement	Message source application
name	Σ	0..1	string	Name of system
software	Σ	0..1	string	Name of software running the system
version	Σ	0..1	string	Version of software running
contact	Σ	0..1	ContactPoint	Human contact for problems
endpoint *	Σ	1..1	url	Actual message source address or id
responsible	Σ	0..1	Reference	Final responsibility for event
reason	Σ	0..1	CodeableConcept	Cause of event EventReason (example)
response	Σ	0..1	BackboneElement	If this is a reply to prior message
identifier *	Σ	1..1	id	Id of original message
code *	Σ	1..1	code	ok \| transient-error \| fatal-error ResponseType (required)
details	Σ	0..1	Reference	Specific list of hints/warnings/errors
focus	Σ	0..*	Reference	The actual content of the message
definition	Σ	0..1	canonical	Link to the definition for this message