Name Interface Engines in HL7

Orion Health - Rhapsody Integration Engine

NextGen Connect - Mirth Connect

iNTERFACEWARE - Iguana

Lawson Worldwide - Lawson Cloverleaf

Corepoint Health - Corepoint Integration Engine

Intersystems - Ensemble 

What is modality in HIS-RIS?

Modality is the term used in radiology to refer the therapeutic method in which images are generated/recorded. More generally, in clinical medicine, the term modality is used for different types of procedures and therapies. Modality for radiology orders in ORM^O01 message. we are currently using the OBR-24 field as Modality for radiology orders message.

What are the minimum segments necessary to generate an ADT message?

MSH - Message header (Required)
EVN - Event type (Required)
PID - Patient identification (Required)
PV1 - Patient visit (Required)

What are the minimum segments necessary to generate an ORU message?

MSH - Message header (Required)
PID - Patient identification (Required)
PV1 - Patient visit (Required)
OBR - Observation request (Required)
OBX - Observation segment (Required, Repeatable)

What are the minimum segments necessary to generate an MDM message?

MSH - Message header (Required)
EVN - Event type (Required)
PID - Patient identification (Required)
PV1 - Patient visit (Required)
TXA - Document notification segment (Required)
OBX - Observation segment (Required, Repeatable)

What are the differences between a v2.x and v3 message in HL7?

The key differences between a v2.x and v3 message are as follows:

v2.x was primarily meant for clinical communications - medical orders, patient registration etc. whereas v3.x has additional features for use by informaticists and for government reporting requirements.
v2.x was a custom format (barebones text - all coded and separated by a pipe with headers and multiple segments etc.) whereas an HL7 v3.0 message is an XML format - very verbose and detailed.