Z28 - Immunization not carried out and underimmunization status
Z28.2 - Immunization not carried out because of patient decision for other and unspecified reason
Z28.20 - Immunization not carried out because of patient decision for unspecified reason
Z28.21 - Immunization not carried out because of patient refusal
Z28.29 - Immunization not carried out because of patient decision for other reason