This code system http://hl7.org/fhir/v2/0508 defines the following codes:

CodeDisplay
AUAutologous Unit
CMCMV Negative
CSCMV Safe
DIDirected Unit
FRFresh unit
HBHemoglobin S Negative
HLHLA Matched
IGIgA Deficient
IRIrradiated
LRLeukoreduced
WAWashed