Z67.9 Unspecified blood typeNon-billable header with 2 child codes.
Z67.30 Type AB blood, Rh positiveZ67.31 Type AB blood, Rh negativeZ67.4 Type O bloodZ67.40 Type O blood, Rh positiveZ67.41 Type O blood, Rh negativeZ67.9 Unspecified blood type (this code)Z67.90 Unspecified blood type, Rh positiveZ67.91 Unspecified blood type, Rh negativeZ67.A Duffy phenotypeZ67.A1 Duffy nullZ67.A2 Duffy a positive