HL7V3 Health and Social Care Integration Domain Message Specification

The Health and Social Care Integration (HSCI) Domain Message Specification (DMS) supports the communication requirements of the Assessment, Discharge and Withdrawal Notices Between Hospitals and Social Services Information Standard.

ITK Payloads – HL7v3 and Clinical Document Architecture

The NHS Interoperability Toolkit (ITK) provides specifications for electronic messaging between systems, supported by an accreditation for suppliers who build solutions that adhere to these specifications. This page explains the two main areas; transport and payloads.

NHS Interoperability Framework

The Interoperability Toolkit (ITK) is a set of national standards, frameworks and implementation guides to support interoperability within local organisations and across local health communities. The ITK is not a piece of software.

ITK API and reference implementation scenarios

This page summarises a number of scenarios that illustrate how the the API and reference implementation can be used in the real world.

Downloads and data - ITK developer resources

Download tools and source code for developers relating to the Interoperability Toolkit (ITK). This content was previously found on the developer.nhs.uk platform.

Interoperability Toolkit (ITK) release 2.2

The Interoperability Toolkit (ITK) aims to standardise interoperability within both health and social care.

ITK3 Test Harness

NHS Digital has developed a set of generic FHIR messaging components to allow a standard approach to FHIR MessageHeaders and responses across NHS message and document flows in England. These components, along with NHS Digital payload specifications, are part of the ITK3 solution.

Pragmatic use of ITK3 response codes for generic FHIR receive programmes

This guidance clarifies the use of the application level ITK3 response codes associated with the Generic FHIR Receive (GFR) capability

ITK test centre - interoperability and integration

Find testing tools, data and guidance for the NHS interoperability framework.

Transfer of Care - FHIR API

The Transfer Of Care (TOC) specifications contain new and previous versions of Acute Inpatient Discharge, Emergency Care Discharge, Mental Health Discharge, Outpatient Clinic Letter.

Interoperability Toolkit Overview

Spine Mini Services Assurance Overview

Anatomy of an ITK message - web services support

ITK Distribution Envelope in relation to ITK Transports

Acknowledgement Framework Sequence Diagram

Additional guidance for use of ITK3 response codes for the Generic Receive Capability