This code system http://hl7.org/fhir/biologicallyderivedproductdispense-match-status defines the following codes:

Code Display Definition
crossmatched Crossmatched The product has been serologically or electronically crossmatched for the recipient
selected Selected The product has been selected for the specific use of the recipient
unmatched Unmatched No specific matching has been carried out
least-incompatible least incompatible The product has been selected through crossmatching as least incompatible
<status value="active"/> <experimental value="false"/> <date value="2023-01-29T21:19:50+01:00"/> <publisher value="HL7 (FHIR Project)"/> <contact> <telecom> <system value="url"/> <value value="http://hl7.org/fhir"/> </telecom> </contact> <description value="Biologically derived product dispense - match status"/> <jurisdiction> <coding> <system value="http://unstats.un.org/unsd/methods/m49/m49.htm"/> <code value="001"/> <display value="World"/> </coding> </jurisdiction> <caseSensitive value="true"/> <valueSet value="http://hl7.org/fhir/ValueSet/biologicallyderivedproductdispense-match-status"/> <content value="complete"/> <count value="4"/> <concept> <code value="crossmatched"/> <display value="Crossmatched"/> <definition value="The product has been serologically or electronically crossmatched for the recipient"/> </concept> <concept> <code value="selected"/> <display value="Selected"/> <definition value="The product has been selected for the specific use of the recipient"/> </concept> <concept> <code value="unmatched"/> <display value="Unmatched"/> <definition value="No specific matching has been carried out"/> </concept> <concept> <code value="least-incompatible"/> <display value="Least incompatible"/> <definition value="The product has been selected through crossmatching as least incompatible"/> </concept> </CodeSystem>