Z20 Contact with and exposure to communicable diseases
Z21 Asymptomatic human immunodeficiency virus [HIV] infection status
Z22 Carrier of infectious disease
Z23 Need for immunization against single bacterial diseases
Z24 Need for immunization against cartain single viral diseases
Z25 Need for immunization against other single viral diseases
Z26 Need for immunization against other single infectious diseases
Z27 Need for immunization against combinations of infectious diseases
Z28 Immunization not carried out
Z29 Need for other prophylacticf measures