HL7 Sending Facility/Logical Link relationship ICR (5698)

Name

Value

NUMBER

5698

IA #

5698

FILE NUMBER

870

GLOBAL ROOT

HLCS(870,

DATE CREATED

2011/07/26

CUSTODIAL PACKAGE

HEALTH LEVEL SEVEN

USAGE

Private

TYPE

File

DBIC APPROVAL STATUS

APPROVED

NAME

HL7 Sending Facility/Logical Link relationship

GENERAL DESCRIPTION

The VistA Radiology/Nuclear Medicine application uses
HL7 messages to communicate with the teleradiologists associated with the
National Teleradiology Program. The interface between these two applications
requires the software on the NTP side to query the VistA radiology database
when an order is received by NTP for a new patient.

The first iteration of the NTP query/Radiology response software utilized v2.3
HL7 messages and the destination of those responses was defined by the data
stored in the following two fields: TCP/IP ADDRESS (#400.01) and the TCP/IP
PORT (OPTIMIZED) (#400.08). These two fields reside within the HL LOGICAL LINK
(#870) file.

RA*5.0*107 is the second iteration of the NTP query/Radiology response
interface. This iteration will upgrade the HL7 version of the message from
V2.3 to V2.4 and the query will identify the DNS Domain (MSH-4.2) where the
responses are to be broadcast.

DNS Domain information is passed as a component of the Sending Facility
(MSH-4) field associated with the query.

The DNS Domain is then used to 'look up' the logical link record required to
complete the HL7 information transfer.

GLOBAL REFERENCE

FIELD NUMBER

HLCS(870,DA,0)

FIELD NUMBER	ACCESS	FIELD NAME	LOCATION
.08	Read w/Fileman	DNS DOMAIN	0;8

STATUS

Active

KEYWORDS

HLO
VistA HL7
Radiology
HL7
Logical Link
Sending Application
DNS Domain
MSH-4

DURATION

Till Otherwise Agreed

HLCS(870,

SUBSCRIBING PACKAGE

SUBSCRIBING PACKAGE	SUBSCRIBING DETAILS
RADIOLOGY/NUCLEAR MEDICINE	The VistA Radiology/Nuclear Medicine application will use a FileMan Database Server call ($$FIND1^DIC) to resolve the DNS Domain into the correct HL LOGICAL LINK record.

DATE ACTIVATED

2011/08/01