Hl7 Segments 3
Understanding HL7 Segment Grammar Notation
By convention, a standard segment grammar notation is defined to provide a convenient way to indicate the segments that can be included in a particular type of HL7 message.
Many vendors use this segment grammar notation to specify what segments may be included with each type of HL7 message that they send.
Inside HL7 Messages: What are HL7 Segments?
n an HL7 message, each segment of the message contains one specific category of health information, such as patient information or patient visit data. The name of each segment in the message is specified by the first field of the segment, which is always three characters long.
What is an HL7 Segment Group?
Some message types support segment groups. An HL7 segment group is a collection of segments that always appear together. Depending on the scenario, some segment groups can be optional or repeating.
In this article, we will explore a typical sample HL7 message, and describe HL7 segments groups in detail.
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