Table Of Contents

Introduction

SNOMED CT terminology provides a common language that enables a consistent way of indexing, storing, retrieving, and aggregating clinical data across specialties and sites of care.

The International Health Terminology Standards Development organisation (IHTSDO^®), trading as SNOMED International, maintains the SNOMED CT technical design, the content architecture, the SNOMED CT content (includes the concepts table, the descriptions table, the relationships table, a history table, and ICD mappings), and related technical documentation.

Background

This document provides a summarized description of the content changes included in the May 2026 release of the SNOMED Clinical Terms^® Managed Service Sweden Extension package.

It will also include technical notes detailing known issues which have been identified (should any of these exist). These are content or technical issues where the root cause is understood, and the fix has been discussed and agreed, but has not yet been implemented.

This Sweden Extension package is dependent upon, and should therefore be consumed in conjunction with the SNOMED CT®  February 2026 International Edition release.

Scope

This document is written for the purpose described above and is not intended to provide details of the technical specifications for SNOMED CT or encompass every change made during the release.

Content Development Activity

Summary

Content from the SNOMED CT® February 2026 International Edition release has been translated and additional concepts and synonyms have been added for use in Sweden. Some areas for which new concepts and synonyms have been added are:

• Collaboration and Harmonization

  • Work with National Collaboration Groups (NAG för användning av Snomed CT and Nationella kvalitetsregister) has been ongoing to develop Swedish content and improve the quality of Swedish translations 

    • Work with the healthcare regions to develop content in the Swedish extension has been ongoing to develop new content and improved translations. For more information about "NAG för användning av Snomed CT", see:  https://kunskapsstyrningvard.se/kunskapsstyrningvard/programomradenochsamverkansgrupper/nationellasamverkansgrupper/nsghalsodata/struktureradvardinformation.92002.html

  • Work with professional societies (Dietisternas Riksförbund, Svensk sjuksköterskeförening) has been done to improve the quality of the Swedish translations.

  • Work with Swedish eHealth Agency.

  • Work with national and local stakeholders to update content and/or various reference sets. 

• Quality Assurance

  • Work has been done to reduce duplicate terms, update modeling of content, and address other quality issues in the Swedish translation.  

  • Work has been done to improve Swedish content in the areas listed below:

    • International Patient Summary reference set has updated translations for example content involving disorders.

    • Updated translations for concepts comprising for example Upper limb, Lower limb, Neoplasm of uncertain behavior, Abuse/ misuse, Miscarriage/ Spontaneous abortion, Facet joint and concepts with "proper".

• For more detailed information visit https://www.ehalsomyndigheten.se/. For questions please contact us via interoperabilitet@ehalsomyndigheten.se.

Concept statistics

New and Updated Content

New concepts: 146

Table 1. New concepts by hierarchy

Descriptions statistics

• New descriptions: 6366

• Changed descriptions: 6

• Inactivated descriptions: 2215

• Translations of new concepts: 0

Some concepts have not been translated into Swedish. The reasons for non-translation varies and can include; pause and translation activities, concepts that are not relevant in a Swedish context or concepts where the name in Swedish and English are equivalent (e.g. the Latin names of organisms).

Reference sets

• New reference sets has been added:

1. 654031000052101 National care service reference set

• Updated simple reference sets:

1. 500121000057102 Specimen type reference set

2. 500091000057101 Specimen collection site reference set

3. 500061000057107 Microorganism result reference set

4. 62201000052106 Dose unit reference set, Swedish national medication list

5. 59841000052105 Implants, alert information reference set

6. 59821000052101 Medical conditions, alert information reference set

7. 553961000052101 Nutrition diagnoses reference set

8. 553971000052105 Nutrition interventions reference set

9. 563951000052105 Healthcare services in Sweden reference set

10. 553931000052108 Nursing interventions reference set

• Updated language reference sets:

1. 500191000057100 Laboratory medicine context language type reference set

2. 83461000052100 ICNP Swedish language type reference set

3. 63491000052105 Dose unit abbreviation language type reference set, Swedish national medication list

4. 63481000052108 Dose unit plural language type reference set, Swedish national medication list

5. 63461000052102 Context-specific terms language type reference set, Swedish national medication list

6. 63451000052100 Common-language expression language type reference set, Swedish national medication list

7. 564331000052102 NCPT Swedish language type reference set

• Simple reference sets with all members removed:

1. 59901000052102 Food hypersensitivities, alert information reference set

• Simple reference set which all members are going to be removed in November 2026: 

1. 500221000057105 Care service reference set

• Deprecated reference sets

1. 64511000052102 COVID-19 symptom simple type reference set

If any reference sets with all members removed are in use please send a message to interoperabilitet@ehalsomyndigheten.se. They are marked for deprecation, with plans of inactivation November 2026.

Technical notes

Known Issues

Known Issues are content or technical issues where the root cause is understood, and the resolution has been discussed and agreed but has yet to be implemented.  This can be due to a number of reasons, from lack of capacity within the current editing cycle, to the risk of impact to the stability of SNOMED CT if the fix were to be deployed at that stage in the Product lifecycle.  

For this cycle of the SNOMED CT Managed Service - Sweden Extension, the following Known Issues were identified, and agreed to be resolved in the next editing cycle:

Technical notes

Notice of changes to the SE Extension Release package

Refset File Naming conventions

From the May 2025 SE Managed Service Release onwards, the file name of the Association reference set has been aligned with the naming convention used in the International Edition. Please refer to the Terminology Release Advisory Group discussion page for details: Association Reference naming convention.

• der2_cRefset_AssociationReferenceFull_SE1000052_20241130.txt  → der2_cRefset_AssociationFull_SE1000052_20250531.txt

Please contact the Swedish National Release Center via interoperabilitet@ehalsomyndigheten.se for any further details, or if you need assistance with these improvements.