How to search for an empty HL7 field in Message Viewer

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Apr 25, 2018, 4:23:32 PM4/25/18

to InterSystems: Ensemble in Healthcare

This took a bit to figure out so I wanted to share to save others' time. To search for an empty HL7 field in Ensemble Message Viewer:

Add Extended Criteria

Criterion Type: VDoc Segment Field

Class:EnsLib.HL7.Message

Conditions:

Add Segment Type such as 2.7.1:PV1

Field Name such as 3.3

Matches

.0E

(The value .0E is a period followed by 0E which is COS pattern matching for zero of "any character". In other words, it means empty).

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