Data type OG in FHIR

How the components of data type OG (OG) become FHIR R4 elements, from the HL7 Version 2 to FHIR guide.

Maps
Extension (Subidentifier)

To ExtensionSubidentifier8 rows

HL7 v2 sourcev2 typeFHIR elementFHIR typeConditions and notes
OG.1
STextension[1]:group.url
Value "http://hl7.org/fhir/StructureDefinition/observation-v2-subid"
OG.1
STextension[1]:orginal-sub-identiier.valueStringstring
OG.2
NMextension[1]:group.url
Value "http://hl7.org/fhir/StructureDefinition/observation-v2-subid"
OG.2
NMextension[1]:group.valueDecimaldecimal
OG.3
NMextension[1]:group.url
Value "http://hl7.org/fhir/StructureDefinition/observation-v2-subid"
OG.3
NMextension[1]:group.valueDecimaldecimal
OG.4
STextension[1]:group.url
Value "http://hl7.org/fhir/StructureDefinition/observation-v2-subid"
OG.4
STextension[1]:identifier.valueStringstring