Instruction Source: Z28.310
Unvaccinated for COVID-19
Instruction Source: Z28.31
Underimmunization for COVID-19 status
Clinical Notes
- These codes should not be used for individuals who are not eligible for the COVID-19 vaccines, as determined by the healthcare provider.
Instruction Source: Z28.3
Underimmunization status
Instruction Source: Z28
Immunization not carried out and underimmunization status
Inclusion Terms
- vaccination not carried out
Instruction Source: Z20-Z29
Persons with potential health hazards related to communicable diseases (Z20-Z29)
Instruction Source: Z00-Z99
Factors influencing health status and contact with health services
Clinical Notes
- (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.
- (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.
- 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: