<status value="draft" /> <fhirVersion value="4.0.1" /> <kind value="complex-type" /> <type value="Coding" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Coding" /> <derivation value="constraint" /> <differential> <element id="Coding"> <path value="Coding" /> </element> <element id="Coding.system"> <path value="Coding.system" /> <min value="1" /> <fixedUri value="http://snomed.info/sct" /> </element> <element id="Coding.code"> <path value="Coding.code" /> <min value="1" /> <constraint> <key value="sctext-not-numeric" /> <severity value="error" /> <human value="Ikke ren numerisk kode." /> <expression value="not(matches('^\\d{6,18}$'))" /> </constraint> <constraint> <key value="sctext-has-cg-markers" /> <severity value="warning" /> <human value="Bør inneholde CG-tegn (:=, {}, : )." /> <expression value="matches('[:=]|[{}]')" /> </constraint> </element> </differential> </StructureDefinition>