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Interoperability Toolkit Messaging HL7 V2 API standards

API standards for a set of messaging components using HL7 V2.


These API standards cover a set of HL7 V2 messaging specifications known as the Interoperability Toolkit (ITK). For example, for sending messages about the admission, discharge and transfer (ADT) of a patient.

For more details on this API standard, see the Interoperability Toolkit Core download below.

These API standards were supplemented by the Interoperability Toolkit 3 (ITK3) Messaging Distribution FHIR API standards to support newer specifications, for example Transfer of Care, which is not supported under ITK V2.

For further information, contact the ITK conformance team.

API standards

Click to download a zip file and extract all the files into a folder on your local PC. 
Select the index file to view the API standard.

Last edited: 22 November 2021 5:05 pm