HL7.Query.get_part

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get_part(query, field_selector)

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Returns a segment part from the first selected segment (of the given name, if specified) across all selections using the given field_selector.

PID-3[2].1.2 PID segments, field 3, repetition 2, component 1, subcomponent 2

OBX-5 OBX segments, field 5

2.3 All segments, field 2, component 3