SpecialValues

A set of generally useful codes defined so they can be included in value sets.

This code system http://terminology.hl7.org/CodeSystem/special-values defines the following codes:

Code Display Definition Comments
true true Boolean true.
false false Boolean false.
trace Trace Amount Detected The content is greater than zero, but too small to be quantified.
sufficient Sufficient Quantity The specific quantity is not known, but is known to be non-zero and is not specified because it makes up the bulk of the material. used in formulations (e.g. 'Add 10mg of ingredient X, 50mg of ingredient Y, and sufficient quantity of water to 100mL.' This code would be used to express the quantity of water. )
withdrawn Value Withdrawn The value is no longer available.
nil-known Nil Known The are no known applicable values in this context. The existence of this subject to review
<status value="draft"/> <experimental value="false"/> <date value="2018-08-19T21:48:56+10:00"/> <description value="A set of generally useful codes defined so they can be included in value sets."/> <caseSensitive value="true"/> <valueSet value="http://hl7.org/fhir/ValueSet/special-values"/> <content value="complete"/> <concept> <code value="true"/> <display value="true"/> <definition value="Boolean true."/> </concept> <concept> <code value="false"/> <display value="false"/> <definition value="Boolean false."/> </concept> <concept> <code value="trace"/> <display value="Trace Amount Detected"/> <definition value="The content is greater than zero, but too small to be quantified."/> </concept> <concept> <extension url="http://hl7.org/fhir/StructureDefinition/codesystem-comments"> <valueString value="used in formulations (e.g. 'Add 10mg of ingredient X, 50mg of ingredient Y, and sufficient quantity of water to 100mL.' This code would be used to express the quantity of water. )"/> </extension> <code value="sufficient"/> <display value="Sufficient Quantity"/> <definition value="The specific quantity is not known, but is known to be non-zero and is not specified because it makes up the bulk of the material."/> </concept> <concept> <code value="withdrawn"/> <display value="Value Withdrawn"/> <definition value="The value is no longer available."/> </concept> <concept> <extension url="http://hl7.org/fhir/StructureDefinition/codesystem-comments"> <valueString value="The existence of this subject to review"/> </extension> <code value="nil-known"/> <display value="Nil Known"/> <definition value="The are no known applicable values in this context."/> </concept> </CodeSystem>