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OG - observation grouper

HL7 Component Table - OG - observation grouper
Seq# Description Data Type Usage Vocabulary Length C.LEN Flags
OG
1 Original Sub-Identifier ST O
 20
2 Group NM O
   
3 Sequence NM O
   
4 Identifier ST O
   

Components: <Original Sub-Identifier (ST)> & <Group (NM)> & <Sequence (NM)> & <Identifier (ST)>


OG-1: Original Sub-Identifier (ST)

Definition: The Original Sub-Identifier component represents the original data type used in OBX-4 to enable backwards compatibility to continue use of the original format to provide OBX segment grouping.

OG-2: Group (NM)

Definition: The Group component indicates the group and its sequence within the OBR segment that the OBX segment is a part of.

OG-3: Sequence (NM)

Definition: The Sequence component indicates the sequence within the group as defined in OG-2.

OG-4: Identifier (ST)

Definition: The Identifier component enables assignment of an identifier to a result component, for example an isolate in a microbiology message. Futher guidance on how to use this field will be found in an Implementation Guide.