Z28.3 Underimmunization status

Non-billable header with 2 child codes.

Use additional code

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

Applies from Z28 Immunization not carried out and underimmunization status

Includes

• vaccination not carried out

Code also

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

Codes under Z28.3

• Z28.31 Underimmunization for COVID-19 status
• Z28.39 Other underimmunization status

Approximate ICD-9-CM (GEMs)

• V15.83 Personal history of underimmunization status

Code annotations containing back-references to Z28.3

Back-references to Z28

• Code Also: Z71.85 Encounter for immunization safety counseling (", if applicable, immunization not carried out (Z28.-)")

Nearby codes

• Z28.1 Immunization not carried out because of patient decision for reasons of belief or group pressure
• Z28.2 Immunization not carried out because of patient decision for other and unspecified reason
• Z28.20 Immunization not carried out because of patient decision for unspecified reason
• Z28.21 Immunization not carried out because of patient refusal
• Z28.29 Immunization not carried out because of patient decision for other reason
• Z28.3 Underimmunization status (this code)
• Z28.31 Underimmunization for COVID-19 status
• Z28.310 Unvaccinated for COVID-19
• Z28.311 Partially vaccinated for COVID-19
• Z28.39 Other underimmunization status
• Z28.8 Immunization not carried out for other reason