NSC - Application Status Change Segment

The NSC segment is used to inform (NMR query response) or announce (NMD unsolicited update) the start-up, shut-down, and/or migration (to a different CPU or file-server/file-system) of a particular application.

Usage Notes: Fields 2-9. These are not applicable ("n/a") when the type of change being requested or reported is start-up or shut-down. If the change is of type "M", at least one of fields 2-5 must be different from its corresponding field in range 6-9.

Fields 4-5, 8-9. See definitions for the MSH, message header segment, in Chapter 2, "Control Section," for fields 3-4, for system and facility. "Application" is available for interfacing with lower level protocols. "Facility" is entirely site-defined.

Fields 2-3, 6-7: entirely site-defined.

HL7 Attribute Table - NSC - Application Status Change Segment

Seq#	Data Element Name	DataType	Usage	Vocabulary	Cardinality	Item #	Length	C.LEN	Flags
NSC
1	Application Change Type	CWE	R	0409 Application Change Type	[1..1]	01188
2	Current CPU	ST	O		[0..1]	01189
3	Current Fileserver	ST	O		[0..1]	01190
4	Current Application	HD	O	0361 Application	[0..1]	01191
5	Current Facility	HD	O	0362 Facility	[0..1]	01192
6	New CPU	ST	O		[0..1]	01193
7	New Fileserver	ST	O		[0..1]	01194
8	New Application	HD	O	0361 Application	[0..1]	01195
9	New Facility	HD	O	0362 Facility	[0..1]	01196

NSC-1: Application Change Type (CWE) 01188

Definition: This field contains the type of change being requested (if NMR query) or announced (if NMD unsolicited update). Refer to User-Defined Table 0409 - Application Change Type in Chapter 2C, Code Tables, for suggested values. It is assumed that "new" version starts up with no loss or duplication of data as old one is shutting down (if possible).

NSC-2: Current CPU (ST) 01189

Definition: This field contains a site-specific name for the current CPU.

NSC-3: Current Fileserver (ST) 01190

Definition: This field contains a site-specific name for the current fileserver or file system used by this application.

NSC-4: Current Application (HD) 01191

Definition: This field contains a site-specific name used to identify the "current" application process for interfacing with lower level protocols. To be used in conjunction with the sending/receiving system and facility values in the MSH. Entirely site-defined. User-defined Table 0361-Sending/Receiving Application is used as the user-defined table of values for the first component.

NSC-5: Current Facility (HD) 01192

Definition: This field contains a site-specific name for the current facility used by this application. To be used in conjunction with the values for the sending/receiving system and facility values in the MSH. This field further describes the current application, NSC-5 Current Application. With the promotion of this field to an HD data type, the usage has been broadened to include not just the current facility but other organizational entities, such as: a) the organizational entity responsible for current application; b) the responsible unit; c) a product or vendor's identifier, etc. Entirely site-defined. User-defined Table 0362 – Sending/Receiving Facility is used as the HL7 identifier for the user-defined table of values for the first component.

NSC-6: New CPU (ST) 01193

Definition: This field contains a site-specific name for the new CPU.

NSC-7: New Fileserver (ST) 01194

Definition: This field contains a site-specific name for the new fileserver or file system used by this application.

NSC-8: New Application (HD) 01195

Definition: This field contains a site-specific name used to identify "new" application processes for interfacing with lower level protocols. To be used in conjunction with the sending/receiving system and facility values in the MSH. Entirely site-defined. User-defined Table 0361-Sending/Receiving Application is used as the user-defined table of values for the first component.

NSC-9: New Facility (HD) 01196

Definition: This field contains a site-specific name for the new facility used by this application. To be used in conjunction with the values for the sending/receiving system and facility values in the MSH.

This field further describes the new application, NSC-8 New Application. With the promotion of this field to an HD data type, the usage has been broadened to include not just the new facility but other organizational entities, such as: a) the organizational entity responsible for new application; b) the responsible unit; c) a product or vendor's identifier, etc. Entirely site-defined. User-defined Table 0362 – Sending/Receiving Facility is used as the HL7 identifier for the user-defined table of values for the first component.