Code
Hierarchy
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Z00-Z99 Factors influencing health status and contact with health services (Z00-Z99)
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Z20-Z29 Persons with potential health hazards related to communicable diseases (Z20-Z29)
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Z20 Contact with and (suspected) exposure to communicable diseases
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Z20.0 Contact with and (suspected) exposure to intestinal infectious diseases
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Z20.1 Contact with and (suspected) exposure to tuberculosis
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Z20.2 Contact with and (suspected) exposure to infections with a predominantly sexual mode of transmission
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Z20.3 Contact with and (suspected) exposure to rabies
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Z20.4 Contact with and (suspected) exposure to rubella
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Z20.5 Contact with and (suspected) exposure to viral hepatitis
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Z20.6 Contact with and (suspected) exposure to human immunodeficiency virus [HIV]
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Z20.7 Contact with and (suspected) exposure to pediculosis, acariasis and other infestations
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Z20.8 Contact with and (suspected) exposure to other communicable diseases
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Z20.9 Contact with and (suspected) exposure to unspecified communicable disease
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Notes
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Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
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(a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
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(b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.