EQL segment

Embedded Query Language

The shape of one line

segmentEQL|EQL-1Query Tag|EQL-2Query/Response Format…|EQL-3EQL Query Name|EQL-4EQL Query Statement

required optional

Count the pipes to find a field, and count the empty ones too: an empty field still holds its place. Leave out the separator before EQL-2 and its value arrives as EQL-1, so the receiver stores Query/Response Format Code as Query Tag.

This page carries the EQL field table as published and nothing beyond it. The field notes, vendor behaviour, FHIR mapping and parsing guidance that thePID page has are still to be written for EQL.

Every field

SEQ LEN DT OPT RP/# TBL# ITEM# Element name Cardinality

EQL-1 32 ST O 00696 Query Tag 0..1

EQL-2 1 ID R 0106 00697 Query/Response Format Code 1..1

EQL-3 250 CE R 00709 EQL Query Name 1..1

EQL-3 is a CE, which holds 6 components separated by carets.

SEQ	LEN	DT	OPT	TBL#	Component name
CE.1	20	ST	O		Identifier
CE.2	199	ST	O		Text
CE.3	20	ID	O	0396	Name of Coding System
CE.4	20	ST	O		Alternate Identifier
CE.5	199	ST	O		Alternate Text
CE.6	20	ID	O	0396	Name of Alternate Coding System

EQL-4 4096 ST R 00710 EQL Query Statement 1..1

No message structure in v2.5.1 carries EQL, and no other segment is linked to it here. The standard defines the segment on its own.

EQL segment

The shape of one line

Every field

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