SGH - Segment Group Header Segment

The SGH segment is only used to provide information about the instantiated message structure to indicate that a new segment group begins and subsequent segments SHOULD be interpreted accordingly. It does not contain any patient related data.

It is expected that each SGH will be accompanied by an SGT, as depicted below in the abstract message diagram: WRP: Widget Reports

Segments	Description	Status	Chapter
MSH	Message Header		2
[{SFT}]	Software Segment		2
[UAC]	User Authentication Credential		2
MSA	Message Acknowledgment		2
[{ERR}]	Error Segment		2
{	---Widget begin
[SGH]	Segment Group Header		2
WDN	Widget Description		XX
WPN	Widget Portion		XX
[SGT}	Segment Group Trailer		2
}	---Widget end

HL7 Attribute Table - SGH - segment group header segment

Seq#	Data Element Name	DataType	Usage	Vocabulary	Cardinality	Item #	Length	C.LEN	Flags
SGH
1	Set ID – SGH	SI	R		[1..1]	03389	[4..*]
2	Segment Group Name	ST	O		[0..1]	03390		60	#

SGH-1: Set ID – SGH (SI) 03389

Definition: For the first segment group transmitted, the sequence number SHALL be 1; for the second , it SHALL be 2; and so on.

SGH-2: Segment Group Name (ST) 03390

Definition: This field contains the name of the segment group.