The SNOMED CT composition grammar is a lightweight syntax for the representation of SNOMED CT expressions, which is both human readable and machine parsable.
Status
SNOMED CT compositional grammar version 2.3.1 has been published at http://snomed.org/scg.
Future Versions
With ongoing discussions within the Modelling Advisory Group regarding concrete values, the following extension to SCG has been proposed:
- The introduction of a Boolean value, using the values {true, false, 1, 0}, as used by the XML Schema Specification - https://www.w3.org/TR/xmlschema-2/#boolean