Z28.31

Underimmunization for COVID-19 status

Non-billable header

Z28.31 is a non-billable header code. Use one of the more specific codes below.

Inclusion terms

Note: These codes should not be used for individuals who are not eligible for the COVID-19 vaccines, as determined by the healthcare provider.

vaccination not carried out
Note: 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:
Note: (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.
Note: (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.

Add a code to identify the following, if applicable.

code, if applicable, to identify: (from Z28.3)
immunization not carried out because of contraindication (Z28.0-) (from Z28.3)
immunization not carried out because of patient decision for other and unspecified reason (Z28.2-) (from Z28.3)
immunization not carried out because of patient decision for reasons of belief or group pressure (Z28.1) (from Z28.3)
immunization not carried out for other reason (Z28.8-) (from Z28.3)

An additional code may be needed.

, if applicable, encounter for immunization safety counseling (Z71.85) (from Z28)