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titleIn this page:

Locate and navigate SNOMED CT International Edition concepts by browsing a taxonomy view of SNOMED CT.

Prerequisite steps: Open the SNOMED CT Browser landing page (accept the SCT Browser License Agreement)

titleRelated SNOMED CT Education Videos

Widget Connector

Exploring SNOMED CT Content using the SCT Browser (YouTube playlist)

All SNOMED CT Education Videos (YouTube playlist)

Advanced Tables - Table Plus


Within the International Editions section of the landing page, press Go browsing... International Edition (the date stamp shows the current latest Published version of the SNOMED CT International English Edition)


from any other edition Full view, select Select International Edition from the header bar Release Edition drop drop-down selector:

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The SCT Browser Full perspective is presented, with the following primary content panels:

  • Page header containing:
    • Site Title (link back to the SCT Browser Landing Page).
    • Release: Edition drop-down selector.
    • Version drop-down selector.
    • Perspective drop-down selector.
    • Feedback button.
    • About drop-down sub-menu (links to SNOMED International Privacy policy, GitHub open source code repository, SNOMED International website Tooling page, and SNOMED International website Home page).
    • Language drop-down selector (SCT Browser presentation content labelling only - SNOMED CT content language depends on the selected edition), with Spanish as the default selection.
    • SNOMED International brand mark (link to the SNOMED International website Home page).
  • Left-hand navigation and browsing context panel with the following context tabs:
    • Taxonomy - supporting a hierarchical browsing view of SNOMED CT based on proximal parent is-a relationships.
    • Search - supporting text based content querying with filtering by query word order, concept status, description type and language refset.
    • Favorites - supporting "starring" of particular concepts for personalised subsequent rapid viewing.
    • Refset - supporting browsing of SNOMED CT reference set members.
  • Right-hand content panel, with tabs for:
    • Concept Details (with sub-panel tabbed navigation for Summary, Details, Diagram, Expression, Refsets, Members, History and References related to the currently in-focus concept) in either the Stated or Inferred model view.
    • Expression Constraint Queries - supporting advanced querying of SNOMED CT content using the Expression Constraint Language (ECL).

The Full perspective first opens to the Search tab in the left-hand context panel, with the Concept Details - Summary tab for

t404684003 |Clinical finding (finding)|
shown in the right-hand content panel. The detault presentation language is English (en-US), and the concept details default to showing the US English language reference set FSN and synonyms.

Press the Taxonomy tab in the left-hand panel to show a hierarchical representation of SNOMED CT concepts.

The left-hand content panel changes focus to the Taxonomy view, showing an expandable/collapsible tree navigator of SNOMED CT concepts. This can be considered as an "inverted tree", expanding outwards and downwards from the "root" concept

t138875005 |SNOMED CT Concept (SNOMED RT+CTV3)|

When first opened, the Taxonomy is presented with

t404684003 |Clinical finding (finding)|
as its focus concept, which has
t138875005 |SNOMED CT Concept (SNOMED RT+CTV3)|
as its parent.

The focus concept is the second topmost entry, with its parent as the topmost, and its children concepts expanded below it. Each child node is initially shown "collapsed", so only immediate descendants of the focus concept are visible.

titleSNOMED CD is a directed graph of concepts

Although the linear Taxonony is a convenient tool to browse SNOMED CT concepts via a two-dimensional tree view, it is a simplified representation based on the "proximal primitive parent" Is a Axiom relationships between concepts.

Each concept entry in the Taxonomy view has a Definition Status icon followed by the concept FSN.

Press a concept entry once to load it into the right-hand panel as its focus concept.

Double press a concept entry to re-focus the Taxonomy view on that concept. The tree navigator changes to only show the concept entry with its parent concept above and children below.

To navigate around the concepts, use the blue icon buttons to the left of each concept entry.

  • Awesome Icon
    moves focus "up" the (inverted) tree
    (if the topmost concept is not
    t138875005 |SNOMED CT Concept (SNOMED RT+CTV3)|
    - if it is then no changes are made).
  • Awesome Icon
    expands the tree to show the children of a concept.
  • Awesome Icon
    collapses the tree to hide the children of a concept.
  • Awesome Icon
    indicates a "leaf" node in the tree - a concept that has no descendants (so no changes are made).


Expanding a concept with descendants.

Expanding a previously hidden concept with descendants.

Collapsing a concept to hide its descendants.