At our institution we made up new CDM codes, RAREDG (rare deglyced), RPCALI (rare leukoreduced irradiated), RAPCA (rare non-leukoreduced) etc. .....6 in all to take care of the different types of products we receive. CPT codes used were P9039, P9016, P9021. Blood has to meet certain criteria to be considered rare by our supplier. Example: antigen negative for 2 RH's, Kell, one Fya, one Jka, one Ss.....or, negative for Kell, 2 RH's and both Fya and Fyb.