ICD-10-CM Code Z28: Immunization not carried out and underimmunization status and Related Diagnosis Codes.

The ICD-10-CM (the International Classification of Diseases, Tenth Revision, Clinical Modification) is a standardized coding system used when classifying diseases and medical conditions. Healthcare providers report these codes on Medical claims when diagnosing patient care.

Explore ICD-10-CM codes, organized by chapters based on body systems and medical conditions, as outlined in the International Classification of Diseases, Tenth Revision, Clinical Modification.

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A categorized list of ICD-10-CM codes organized by chapters based on body systems or medical conditions, according to the International Classification of Diseases, Tenth Revision, Clinical Modification.

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  • Z28 - Immunization not carried out and underimmunization status
    • Z28.0 - Immunization not carried out because of contraindication
      • Z28.01 - Immunization not carried out because of acute illness of patient
      • Z28.02 - Immunization not carried out because of chronic illness or condition of patient
      • Z28.03 - Immunization not carried out because of immune compromised state of patient
      • Z28.04 - Immunization not carried out because of patient allergy to vaccine or component
      • Z28.09 - Immunization not carried out because of other contraindication
    • 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
      • 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
      • Z28.81 - Immunization not carried out due to patient having had the disease
      • Z28.82 - Immunization not carried out because of caregiver refusal
      • Z28.83 - Immunization not carried out due to unavailability of vaccine
      • Z28.89 - Immunization not carried out for other reason
    • Z28.9 - Immunization not carried out for unspecified reason
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Note: The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) codes are developed and maintained by the Centers for Disease Control and Prevention (CDC). CDC's National Center for Health Statistics (NCHS) is responsible for the clinical modification of ICD-10 for use in the United States. The World Health Organization (WHO), which owns and publishes ICD-10, authorized NCHS to develop ICD-10-CM. All modifications to ICD-10 must conform to WHO's established ICD structure and conventions. All rights are reserved by the respective entities.