Introduction This document presents the messaging standard for communicating an electronic discharge summary at transfer of care from the hospital to primary care providers. Purpose The purpose of the messaging standard is to ensure that a standard electronic discharge summary can be conveyed between hospital and primary care providers’ information systems to support the transfer of care process. It is a standard for interoperability. Public hospitals are implementing a common business process and common forms for electronic discharge, a key initiative under the National Health Information Technology Plan. Electronic medicines reconciliation is the related process that ensures accurate information about patient medications, allergies and adverse reactions is communicated at transfer of care and with the discharge summary. The messaging standard supports the business process defined by the National Information Clinical Leadership Group for medicines reconciliation and electronic discharge. The messaging standard arises from the following earlier work: An HL7 version 2.4 implementation guide developed in 2010 by Counties Manukau District Health Board and Health Alliance that describes how a referral message with a Portable Document Format (PDF) attachment can be constructed to convey an easily displayed discharge summary – several DHBs have implemented solutions Further development in 2011 led by Patients First to add an HL7 Clinical Document Architecture (CDA) attachment to the message so that structured data can be imported into a General Practice patient management system – a prototype was tested but never rolled out In February 2014, interim standard HISO 10041.1 CDA Templates for Medications, Allergies and Adverse Reactions was published to support the communication of this content as part of the discharge summary Patients First completed work in April 2014 to produce the first draft of this document. Scope This standard defines a message format and a messaging protocol for communicating electronic discharge summaries. It uses and conforms to the HL7 version 2.4 standard. The standard describes the mechanics of sending and receiving messages that contain discharge summary documents. It describes the message format and the messaging protocol that exists between the information systems at either end. The standard describes how messages are addressed from the sender to the receiver and how they are acknowledged. It also covers how updated documents are sent and acknowledged.
'204' – unknown key identifier. Remaining segments The remaining segments in the acknowledgement message are populated as follows. Refer to the earlier description of the PID segment for further details. Field code Description Value domain RF1 segment RF1-6 Original referral identifier PRD segment PRD-1 Provider role PID segment … Example acknowledgement message Here is an example acknowledgement message: MSH|^~\&|MEDTECH32|testedi||CMDHB|201410201209||RRI^I12|hC94641|P|2.4|| MSA|AA|hC94641||| RF1||||||2657598 PRD|GP PID|||ABC1235^^NHI||Curtis^Mary||19870208|F|||123 Ballet Avenue^Sandringham^Auckland 1025 Transport acknowledgement message This is a standard HL7 ACK message that notifies the sender that the message has been successfully delivered to the receiver system and could be parsed. An acknowledgement message is returned automatically by the system and does not indicate that a person has seen the message. Note that the specification does not say what the original sending system should do on receiving a transport acknowledgement message.