A structured combination of one or more that represents an idea.

Notes

• An expression containing a single is referred to as a . An expression that contains two or more is a .
• The syntax used to represent SNOMED CT expressions is called the  and is formally defined in the Compositional Grammar - Specification and Guide.
• The in a are related to one another in accordance with rules expressed in the . These rules allow an expression to the meaning of a by applying more specific values to particular attributes of a more general .

Example

• The expression 284196006:363698007=770850006 represents a burn to the skin of the left index finger. 

• An expression can also include the terms related to each of the identified concepts as shown below:

  284196006|burn of skin|:363698007|finding site|=770850006|Skin structure of left index finger|

  
  

Alternatives

• Expression

Related Links

• Glossary
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• SNOMED computable languages
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• Specification
  • Compositional Grammar Specification and Guide