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To provide consistency and clarity, there has been an effort to use certain styles and specific terms within the Guide. Although this has been the intent, it is the content of the Guide that has been the focus. Consequently, authors may find instances where alternative styles or terms are used.

  • To emphasize a word in a sentence or phrase
  • To indicate the name of something

Upper case first letter

  • To emphasize a word in a sentence or phrase not necessarily at the beginning


Not used in:

  • Lists when items contained therein are not sentences
  • At the end of sentences within tables
  • Presented as:

For example,

      • text of example
  • When possible, examples from the SNOMED CT browser are provided. When examples from the browser aren't available, i.e do not yet exist, they are obtained from other sources

Macros: Note, Tip, Warning

  • General
    • For example, For more information, Modeling, Exception
  • Specific
    • For example, Concepts, URLs
  • Optional Title - added to each


For more information

Contains general information or additional resource (may be link).


Contains modeling information.

Exception or Inactivation or Under Revision

Contains information about content exceptions, inactivation, or under revision



Some concepts, for example, those in the Qualifier value hierarchy, support the definition of other concepts.


URLs that point to definition sources are unacceptable.


  • Heading row - light green fill; bold font
  • Sub-heading row - light blue fill
  • Column heading - light blue fill
  • Other cells - may have pink fill for emphasis
  • Footing row - light yellow fill
Heading row

Footing row

Note: Tables generated from the Human Readable Concept Model have unique formatting

Text formats

  • "Quotation marks"
  • Bold font
  • All CAPS
  • Minimally used
Page headings
  • Section headings - Heading 3

  • Subsection headings - Bold paragraph


Used in GuideSynonym / Other
AttributeConcept Model Attribute; Relationship type
Authoring platformSCA tool
ChildSubtype, Subtype child
ClassifierDescription logic (DL) classifier; Logic reasoner
DescendantChild and Subtype child/children
DomainConcept model domain
Electronic health applicationSoftware application; Clinical information systems
Electronic health record or EHRElectronic medical record; Electronic record; Electronic patient record
ExtensionSNOMED CT extension, Member/Affiliate-Added Terminology
Grouping concept/GrouperNA
International ReleaseCore
Modeler/ModelingAuthor/Authoring, Editor/Editing
ParentSupertype, Supertype parent
PrecoordinatedPrecoordinated expression
PostcoordinatedPostcoordinated expression
QualifierQualifying characteristic
RangeConcept model range, Allowable value
Relationship groupRole group*
Root conceptTop-level concept
Semantic tagSemantic type, Hierarchy tag
Situation with Explicit ContextContext-dependent Category
Sufficiently defined

Fully defined*

*Strikethrough = No longer used

  • No labels