ICD-10 block
Z20–Z29 Persons with potential health hazards related to communicable diseases
The block Z20–Z29 of ICD-10 is titled “Persons with potential health hazards related to communicable diseases”. It is part of Chapter XXI, Factors influencing health status and contact with health services, and holds 10 groups.
Codes in Z20–Z29
- Z20.0Contact with and exposure to intestinal infectious diseases
- Z20.1Contact with and exposure to tuberculosis
- Z20.2Contact with and exposure to infections with a predominantly sexual mode of transmission
- Z20.3Contact with and exposure to rabies
- Z20.4Contact with and exposure to rubella
- Z20.5Contact with and exposure to viral hepatitis
- Z20.6Contact with and exposure to human immunodeficiency virus [HIV]
- Z20.7Contact with and exposure to pediculosis, acariasis and other infestations
- Z20.8Contact with and exposure to other communicable diseases
- Z20.9Contact with and exposure to unspecified communicable disease
- Z22.0Carrier of typhoid
- Z22.1Carrier of other intestinal infectious diseases
- Z22.2Carrier of diphtheria
- Z22.3Carrier of other specified bacterial diseases
- Z22.4Carrier of infections with a predominantly sexual mode of transmission
- Z22.6Carrier of human T-lymphotropic virus type- 1 [HTLV-1] infection
- Z22.7Latent tuberculosis
- Z22.8Carrier of other infectious diseases
- Z22.9Carrier of infectious disease, unspecified
- Z23.0Need for immunization against cholera alone
- Z23.1Need for immunization against typhoid-paratyphoid alone [TAB]
- Z23.2Need for immunization against tuberculosis [BCG]
- Z23.3Need for immunization against plague
- Z23.4Need for immunization against tularaemia
- Z23.5Need for immunization against tetanus alone
- Z23.6Need for immunization against diphtheria alone
- Z23.7Need for immunization against pertussis alone
- Z23.8Need for immunization against other single bacterial diseases
- Z24.0Need for immunization against poliomyelitis
- Z24.1Need for immunization against arthropod-borne viral encephalitis
- Z24.2Need for immunization against rabies
- Z24.3Need for immunization against yellow fever
- Z24.4Need for immunization against measles alone
- Z24.5Need for immunization against rubella alone
- Z24.6Need for immunization against viral hepatitis
- Z27.0Need for immunization against cholera with typhoid-paratyphoid [cholera + TAB]
- Z27.1Need for immunization against diphtheria-tetanus-pertussis, combined [DTP]
- Z27.2Need for immunization against diphtheria-tetanus-pertussis with typhoid-paratyphoid [DTP + TAB]
- Z27.3Need for immunization against diphtheria-tetanus-pertussis with poliomyelitis [DTP + polio]
- Z27.4Need for immunization against measles-mumps-rubella [MMR]
- Z27.8Need for immunization against other combinations of infectious diseases
- Z27.9Need for immunization against unspecified combinations of infectious diseases
- Z28.0Immunization not carried out because of contraindication
- Z28.1Immunization not carried out because of patient's decision for reasons of belief or group pressure
- Z28.2Immunization not carried out because of patient's decision for other and unspecified reasons
- Z28.8Immunization not carried out for other reasons
- Z28.9Immunization not carried out for unspecified reason
Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.
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