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National Early Warning Score 2 API standards

API standards to enable sharing of patients' vital signs and National Early Warning Score 2 (NEWS2) scores between systems and across care boundaries, using the Fast Healthcare Interoperability Resources (FHIR) standard for health and care data exchange.

About this standard

NHS Digital
In development
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Active standards are stable, maintained and have been assured or endorsed for use by qualified bodies.

Standards in development are APIs or API standards in alpha or beta, meaning they are available for use but are still in progress and may change.

Deprecated standards are older versions of a standard which are being phased out.

Retired standards are not being maintained and should not be used.

Standard type
  • Technical standards and specifications
Show definitions of standard types

Record standards define what information to collect and how to format it, for example when registering a new patient.

Data definitions and terminologies define the format of individual data items so they can be consistently represented, for example dates or medication names. Reference sets and controlled lists are also included.

Technical standards and specifications specify how to make information available technically including how the data is structured and transported.

Information codes of practice are legal or best practice guidelines on how information should be handled.

Contact details

Link to standard

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Topics and care settings

  • Access to records
  • Continuity of care (ToC)
Care setting
  • Hospital
  • Patient
  • GP / Primary care
  • Urgent and Emergency Care

Dependencies and related standards

Related standards

No known related standards

Assurance and endorsements

Reference code for standards issued as requirements in England
None - not legally mandated
Quality assurance

Not yet known.


This technical standard is based on the National Early Warning Score 2 (NEWS2) system, which is the latest version of the National Early Warning Score (NEWS); a system to standardise the assessment and response to acute illness. NEWS2 is endorsed by the Royal College of Physicians.

Page last updated: 24 January 2023