MSH - The MSH Segment is used to define the intent, source, destination, and some specifics of the syntax of the message. This segment includes identification of message delimiters, sender, receiver, message type, timestamp, etc. Table 5.2.1: Message Header Segment (MSH) Field Name Seq DT Len Usage Cardinality Value Description/Comments Set Field Separator 1 ST 1 R [1..1] Conformance Statement: CN-004: MSH.1 (Field Separator) SHALL contain the constant value '|'. Encoding Characters 2 ST 4 R [1..1] Conformance Statement: CN-005: MSH.2 (Encoding Characters) contain the constant value '^~\&'. SHALL Sending Application 3 HD 227 R [1..1] This field uniquely identifies the sending application among all other applications within the network enterprise. The network enterprise consists of all those applications that participate in the exchange of HL7 messages within the enterprise. Sending Facility 4 HD 227 R [1..1] This field further describes the sending application, MSH-3-sending 62 application. This field uniquely identifies the facility associated with the application that sends the message. Receiving Application 5 HD 227 R [1..1] This field uniquely identifies the receiving application among all other applications within the network enterprise. The network enterprise consists of all those applications that participate in the exchange of HL7 messages within the enterprise. Receiving Facility 6 HD 227 R [1..1] This field identifies the receiving application among multiple identical instances of the application running on behalf of different organizations.
MSH - The MSH Segment is used to define the intent, source, destination, and some specifics of the syntax of the message. This segment includes identification of message delimiters, sender, receiver, message type, timestamp, etc. Table 5.2.1: Message Header Segment (MSH) Field Name Seq DT Len Usage Cardinality Value Set Description/Comments Field Separator 1 ST 1 R [1..1] Conformance Statement: CN-004: MSH.1 (Field Separator) SHALL contain the constant value '|'. Encoding Characters 2 ST 4 R [1..1] Conformance Statement: CN-005: MSH.2 (Encoding Characters) SHALL contain the constant value '^~\&'. Sending Application 3 HD 227 R [1..1] This field uniquely identifies the sending application among all other applications within the network enterprise. The network enterprise consists of all those applications that participate in the exchange of HL7 messages within the enterprise. Sending Facility 4 HD 227 R [1..1] This field further describes the sending application, MSH-3-sending application. This field uniquely identifies the facility associated with the application that sends the message. Receiving Application 5 HD 227 R [1..1] This field uniquely identifies the receiving application among all other applications within the network enterprise. The network enterprise consists of all those applications that participate in the exchange of HL7 messages within the enterprise. Receiving Facility 6 HD 227 R [1..1] This field identifies the receiving application among multiple identical instances of the application running on behalf of different organizations. 62