Precoordinated expressions consist of a single identifiersingleidentifier, followed optionally by any term that is associated with that that. While the use of a term is not mandated, it is often preferable to include s includes from an appropriate dialect within the expressions to improve the human-readability of the expression. For example:
| Scg expression |
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| Border | ridge |
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| ShowFormat | block |
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73211009| |
diabetes As mentioned, the syntax does not require a term to be used with each concept identifier, so the following is also a
valid :73211009valid:| Scg expression |
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| ShowParts | id |
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| Border | ridge |
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| ShowFormat | block |
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73211009|diabetes mellitus| |