juxtaposition (plural juxtapositions) 1  The nearness of objects with little or no delimiter. 2  The extra emphasis given to a comparison when the contrasted objects are close together.
Hemolytic disease of the newborn (HDN), also known as alloimmune HDN or erythroblastosis fetalis, is a potentially fatal alloimmune condition where fetal red blood cells are destroyed by transplacentally acquired maternal antibodies. RhD is the most common offending paternal antigen.
Classified in category P55, Hemolytic disease of newborn. Note: an indication of incompatibility on a routine cord blood test is not conclusive. Do not assign a code from category P55 on the basis of this finding alone; A diagnosis of isoimmunization or hemolytic disease requires provider confirmation.