TRUD 3, ITK Issued Specifications (IS)

ITK Issued Specifications (IS)

An Issued Specification (IS) indicates that the document or specification has progressed through one of more deployments and considered suitable for wider adoption by the NHS and its vendors.


For more information, see the ITK web pages or join in the discussion on NHS Network


For all content enquires, please email ITK team.

Items available for download

NHS Interoperability Toolkit Accreditation

The Interoperability Toolkit Standards Accreditation pack contains tools and guidance for attaining accreditation to ITK Standard, it is applicable for;


All Suppliers who wish to seek accreditation irrespective of their current contractual relationship with NHS CFH

All products being put forward for accreditation irrespective of their current NHS CFH compliance status

All products being put forward for accreditation irrespective of their position within the end to end ITK solution


For all content enquires, please email ITK team.

NHS Interoperability Toolkit Core

The ITK Core is a common framework on which all ITK functional sub packs rely. It includes details of interaction patterns, acknowledgements, error handling, audit trail and security.
It includes


-Core service definitions - definitions of services which are applicable across the ITK

-Transport Specifications – messages and contents have been designed to be independent of transport. Web services are the default transport, but others such as Data Transfer Services (DTS) are also supported.

-Architecture Specifications – specifications describing the expected technical behaviours of ITK applications and middleware

-Distribution Envelope - ITK payloads are wrapped in a "thin" wrapper called the Distribution Envelope. The Envelope contains information for routing the transmission and some details about its payloads.

-Acknowledgement framework - an overview of the acknowledgements appropriate for ITK implementations

-A Trust Operating Model - describing the responsibilities of an organisation deploying an ITK solution (for example Information Governance, Clinical Safety, Governance)


For all content enquires, please email ITK team.

NHS Interoperability Toolkit Correspondence

Clinical Document Architecture (CDA) definitions for specified correspondence types.


*This pack must be used in conjunction with the contents of the NHS Interoperability Toolkit Core pack.


For all content enquires, please email ITK team.

NHS Interoperability Toolkit Dashboards

Message specifications for defined aggregated data on patient encounters.


*This pack must be used in conjunction with the contents of the NHS Interoperability Toolkit Core pack.


For all content enquires, please email ITK team

NHS Interoperability Toolkit HL7v2

Message specifications that utilise HL7 version 2. For example, messages for admission, discharge and transfer (ADT) of a patient.


*This pack must be used in conjunction with the contents of the NHS Interoperability Toolkit Core pack.


For all content enquires, please email ITK team.

NHS Interoperability Toolkit Security Requirements Accreditation and Concessions

As part of an extensive review of the ITK Architecture Specifications - during Q3/Q4 2012, a team comprising representatives from the Centre and the suppliers agreed a number of changes to the way ITK messages are authenticated. The changes reflected implementation difficulties presented by the nature of the WS-Security header signing specification given current development platforms, and addressed the inclusion in ITK, of multi-hop and non-SOAP transports. Technical details on the reasons for these changes are given in ITK Security Briefing Paper – Strawman Proposals.

The concessions discussed here will form part of the intended refresh and update to the ITK Architecture Specifications planned for completion by 3Q2013.

If you have any questions or queries on these changes to the documentation please direct them to Toolkit Enquiries

* This pack must be used in conjunction with the ITK Web Services Transport Specification which can be located within the related documents section of the NHS Interoperability Toolkit Core Pack

NHS Interoperability Toolkit Spine Mini Services

Spine Mini Services specifications define interaction with NHS National Services (Spine). This includes, for example, services that allow interaction with the Personal Demographic Services (PDS).

It should be noted that those vendors needing to become Spine compliant as part of their overall SMSP offering will need to follow the NHS CFH Common Assurance Process (CAP) to receive their Spine compliance certification. Only those vendor products that have successfully completed CAP will be able to retrieve Patient Demographics Service (PDS) data directly from the National Spine


*This pack must be used in conjunction with the contents of the NHS Interoperability Toolkit Core pack.


For all content enquires, please email ITK team.