Lauren Usrey, Content Program Manager

HL7 DFT Message

The HL7 DFT message describes a financial transaction that is sent to a billing system and is used for patient accounting purposes

HL7 Encoding Characters

Encoding characters are used to construct an HL7 message, defining how data is separated in an HL7 message, and are defined dynamically in the MSH segment.

HL7 EVN Segment

The EVN segment is used to communicate trigger event information to receiving applications. The fields in the PID segment are as follows:

HL7 Escape Sequences

The most common use of HL7 escape sequences is to escape the HL7 defined delimiter characters. The following are examples.

HL7 Interface

An HL7 interface includes an export endpoint for the sending application, an import endpoint for the receiving application, and a method of moving the data.

HL7 ORU Message

The HL7 ORU-R01 message transmits observations and results from the producing system (LIS, EKG) to the ordering system (EMR, physician office application).

The HL7 Evolution

HL7 Z-Segments

A Z-segment is a message segment that is defined locally and that is not part of the HL7 standard. Z-segments are part of the reason why the HL7 standard is considered a “flexible” standard.

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