SNOMED CT New Zealand Edition

Our standard SNOMED CT product is the SNOMED CT New Zealand Edition

The Ministry of Health works with health and disability agencies and their industry partners to publish a standard set of SNOMED CT content for digital health solutions in Aotearoa New Zealand. The SNOMED CT New Zealand Edition is our standard product.

Released every April and October, the SNOMED CT NZ Edition comprises the latest six-monthly release of the SNOMED CT International Edition and a separate package of local content called the SNOMED CT NZ Extension.

The SNOMED CT NZ Edition is a comprehensive source of concepts and terms for recording health information at point of care. All local content is governed by recognised national clinical networks.

Register with us to download the two release packages from our SNOMED CT member licensing and distribution service.

You can browse all New Zealand and international content using the SNOMED CT browser. Look for our national flag and click 'Go browsing New Zealand Edition'.

Thank you to everyone contributing to the SNOMED CT NZ Edition and supporting its adoption.

April 2022 release

The April 2022 release of the SNOMED CT NZ Edition is the current release. It comprises the January 2022 release of the SNOMED CT International Edition and the April 2022 release of the SNOMED CT NZ Extension.

The April 2022 release updates the previous release in October 2021 with many new concepts and terms that fulfil content requests and support new standards, including HISO 10050.2:2020 Maternity Care Summary Standard and SNOMED CT concepts for smoking and vaping.

See the April 2022 release note for details.

Reference sets

SNOMED CT reference sets are created whenever it is useful to narrow the selection of concepts for some purpose. For many purposes, reference sets are not required and SNOMED CT expression contraint language can be used to guide the user and enforce business rules.

The latest release includes the following reference sets and the content of each can be viewed online in the SNOMED International reference set directory at the links.

Another way to access the reference sets is to use our SNOMED CT terminology service. Software applications can be integrated with the terminology service for real-time access to the reference sets. We provide the SNOMED CT identifier (SCTID) for each reference set because calls to the application programming interface (API) need to include SCTID.

Ambulance clinical impression reference set

The ambulance clinical impression reference set includes the concepts paramedics use to represent clinical impressions in the national ePRF system.

This reference set is maintained by the ambulance sector.

Alcohol consumption reference set

The alcohol consumption reference set is used to record the status of alcohol consumption. 

Adverse reaction manifestation reference set

The adverse reaction manifestation reference set represents the most commonly encountered manifestations of allergic reactions and other adverse reactions at a level of detail for adverse reaction reporting and personal health records. The refset is maintained by the HISO adverse reaction reporting standard working group.

The adverse event from immunisation reference set is a subset of the above that is used to record reactions to vaccines, such as in the COVID-19 immunisation register.

Common allergen reference sets

These reference sets are needed in patient record systems to indicate the substance suspected to have caused an adverse reaction.

HealthShare has led the development of these reference sets, in collaboration with DHBs, for the Midland clinical portal project.

Disability reference set

The disability reference set identifies the types of disability that may be recorded about a person and their needs.

The Ministry of Health manages this reference set.

Emergency care reference sets

Three reference sets provide emergency department clinicians with a standard set of concepts for chief presenting complaint, diagnosis and procedures.

DHBs submit SNOMED-coded ED visit data to the National Non-Admitted Patient Collection (NNPAC). NCAMP 2020 introduced this requirement for all DHBs from 1 July 2021.

A national ED clinical information reference group meets every six months to oversee the content of these refsets and their use.

Gateway child health assessment reference set

This reference set includes needs and recommendations concepts used in Gateway child assessments. There are plans to extend the reference set to other parts of the assessment.

The Ministry of Health is working with Oranga Tamariki to develop this content.

Health service type, occupation, clinical specialty and site of care reference sets

The health service type, occupation, clinical specialty and site of care reference sets have been created for consistency in recording health workforce and service delivery information, including clinical document metadata.

These reference sets enumerate health service types (eg clinical pharmacology service, endoscopy service), professional occupations (eg obstetrician, clinical pharmacist, dietitian, audiologist), clinical specialties (eg obstetrics and gynaecology, dietetics and nutrition, general practice) and sites of care (eg general practice premises, nursing home, hospital department).

Maternity reference sets

The following reference sets provide the ability to capture relevant maternity details for a pregnant woman.

Microorganism reference set

The microorganism reference set is the agreed standard for microbiology and infection control and includes all microorganisms in the SNOMED CT International Edition.

HISO, the NZ Microbiology Network and the National Pathology and Laboratory Round Table are co-stewards of the reference set and its adoption.

Non-medicinal drug reference set

This reference set is used to record the most encountered drugs not legally prescribed.

Non-medicinal drug use reference set

This reference set is used to record the status of the use of drugs not legally prescribed.

National Patient Flow reference sets

The nine reference sets released so far include the most common presenting reason and diagnosis concepts used in cardiology, gynaecology, rheumatology, endocrinology, general surgery,  ophthamology, nephrology, general paediatric and child develpment outpatient services.

The reference sets are defined at a suitable level of detail for outpatient services and may be extended in future for other purposes. These reference sets use the standard terms of the SNOMED CT International Edition for the moment. New Zealand preferences for new or different terms per concept will be introduced in a later release.

The Ministry of Health is working with recognised sector groups to develop and maintain these reference sets.

Notifiable disease reference set

The notifiable disease reference set identifies all notifiable diseases in New Zealand. The reference set may be extended for reporting disease subtypes.

The Ministry of Health works with ESR to manage this reference set.

Pharmaceutical dose reference sets

New Zealand common pharmaceutical dose form reference set. Needed in prescribing and patient record systems to record the dose form (eg, capsule) of a medicine or vaccine.

New Zealand common pharmaceutical dose frequency reference set. Needed in prescribing and patient record systems to record the dose frequency (eg, once a day) of a medicine or vaccine.

New Zealand common pharmaceutical dose unit reference set. Needed in prescribing and patient record systems to record the dose unit (eg, mg) in the strength or dose quantity of a medicine or vaccine.

Radiology procedure reference set

The radiology procedures reference set has been developed by the Te Manawa Taki project to deliver a radiology e-ordering solution for hospitas in the central North Island. The refset provides a standard coded term for recording each radiology procedure. The refset can be used and extended by other implementers of radiology ordering systems around the country.

Severe acute respiratory syndrome coronavirus 2 symptoms reference set

COVID-19 symptoms reference set has been created to capture COVID symptoms identified by the Ministry of Health. This can be used for capturing symptoms when someone is undergoing a COVID-19 related assessment or test.

Smoking and vaping reference set

The smoking reference set is the standard set of coded terms for recording smoking status for anyone smoking, trying to quit smoking or ex-smoking.

The vaping status reference set is the standard set of coded terms for recording vaping status for anyone vaping, trying to give up vaping or ex-vaping.

The New Zealand smoking intervention reference set is the standard set of coded terms for recording smoking cessation support offered to individuals.

These reference sets support Smokefree Aotearoa 2021 

The Ministry of Health maintains this reference set.

Surgical complications reference set

The surgical complications reference set includes clinical findings and disorders related to general surgery.

Thanks to Canterbury DHB and their industry partners for the content and their commitment to this work.

A clinical governance group meets regularly to further develop this refset and others for surgical information.

Laboratory order reference set

To support laboratory test ordering, the pathology test request reference set developed by the Royal College of Pathologists of Australasia (RCPA) is included in this release.

Maps

The release includes the following maps between SNOMED CT and other terminologies and code systems.

READ v2 to SNOMED CT map

This unidirectional map from READ v2 to SNOMED CT is provided to aid migration to SNOMED CT in primary care.

We acknowledge NHS Digital for the source data for this map, made available to us under an Open Government Licence. Our version of the map was updated most recently from the NHS Digital data migration release dated October 2018. 

NZMT medicinal product to SNOMED CT map

This map associates NZ Medicines Terminology medicinal product concepts to SNOMED CT concepts. There one-to-one mappings from NZMT concepts to equivalent SNOMED CT concepts where they exist, and many-to-one mappings from NZMT concepts to somewhat less specific SNOMED CT concepts otherwise.

This map is an RF2 version of the equivalent map maintained and documented in NZ Universal List of Medicines releases.

The version of the map included here comes from the NZULM February 2020 release.

ACC SNOMED CT to READ v2 translation table

This unidirectional map from SNOMED CT to READ v2 is used and maintained by ACC to help process SNOMED-coded personal injury claims. The table includes some content from the NHS Digital primary care refset equivalence tables.

MSD SNOMED CT to READ v2 translation table

This unidirectional map from SNOMED CT to READ v2 is used by the Ministry of Social Development to help process SNOMED-coded work capacity medical certificates. The table includes content from the NHS Digital primary care refset equivalence tables and the ACC translation table.

Language reference sets

Language reference sets are created to define the preferred terms and synonyms associated with each concept in some context. This release includes the following language reference sets.

NZ English language reference set

This language reference set has preferred terms, synonyms and correct spellings for all concepts in the SNOMED CT NZ Edition. It is derived from the GB English language refset included with the SNOMED International Edition, and covers the terms included in the SNOMED NZ Extension.

NZ English patient and consumer friendly terms language reference set

This language reference set has patient and consumer friendly terms in NZ English covering the most common health conditions and interventions. The reference set is intended for use in consumer-facing applications, including patient portals and personal health apps.

THINK Hauora has led the development of this content, working with the Ministry of Health.

Te Reo Māori patient and consumer friendly terms language reference set

This language reference set has patient and consumer friendly terms in te reo Māori covering the most common health conditions and interventions. The reference set is intended for use in consumer-facing applications, including patient portals and personal health apps. The first version in October 2020 is offered for trial use and comment.

We acknowledge Te Tihi o Ruahine and THINK Hauora, who have led the development of this content.

Future development

The following reference sets are planned for future development:

  • Cancer
  • Cardiothoracic surgery
  • Dermatology
  • ENT
  • Gastroenterology
  • General medicine (excluding endocrine and diabetes)
  • Neurology
  • Neurosurgery
  • Oncology
  • Orthopaedic surgery
  • Plastics
  • Respiratory
  • Urology
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