HISO 10055.2 SNOMED CT Reference Set for Cardiology: Consultation document

Published online: 
29 July 2016

A draft SNOMED reference set has been developed for Cardiology to support enhanced reporting within National Patient Flow. Public comment on this draft is now closed and feedback is currently being reviewed by a working group.

SNOMED CT is the universal system of clinical terminology designed for capturing structured information about patients, conditions, interventions and outcomes at the point of care. SNOMED is the Ministry of Health’s preferred solution for clinical terminology, and will be used in the National Patient Flow collection to provide a consistent language for classifying referrals. A key component of the ability to understand the patient journeys based on the reason for referral is establishing a nationally agreed set of clinical terms. 

This project sets out to identify clinical terms in each specialty, using SNOMED, that will cover the most common terms for the reason for referral, signs/symptoms, procedures (performed in outpatient settings), along with working and confirmed diagnosis.

Draft reference sets are formed using information currently used within district health boards, then further refined through clinical working groups.


About National Patient Flow

National Patient Flow (NPF) is a national, patient centred, referral collection. NPF contains patient-level information on patients referred for elective first specialist assessment (FSA), surgical treatment, and a range of other diagnostic and therapeutic procedures.

NPF will provide process outcome information which allows the tracking of patients from the point of referral to receipt of definitive treatment. The collection will follow patients across services and DHB boundaries, identifying when clinical responsibility is handed over or shared with other clinicians. The collection will track patients based on service referred to, the reason for referral, and the outcome of the referral.

NPF is unique to the New Zealand environment, and will provide comprehensive information that will allow hospital managers, GPs and clinicians to understand patient journeys at an individual and collective level.  Informed decisions will be able to be made that will improve the quality of care for patients.

The following diagram indicates the points of the patient’s journey where this reference set is applicable (see referral reason and diagnosis).

Flowchart showing the service sequence. It starts at referral (presenting), which sits alongside diagnosis and referral reason. Then comes activity prioritisation, which sits alongside an outcome. Then activity notification, then activity booking, and lastly activity encounter, which sits alongside possibly more outcomes and a diagnosis. As well as a presenting referral, there may be a related referral. Again this sits alongside a referral reason and diagnosis. Then comes activity prioritisation, which sits alongside an outcome. Then activity notification, then lastly activity exception.

Go to National Patient Flow for more information.

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