ICD-10-CM Code Z20: Contact with and (suspected) exposure to communicable diseases 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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  • Z20 - Contact with and (suspected) exposure to communicable diseases
    • Z20.0 - Contact with and (suspected) exposure to intestinal infectious diseases
      • Z20.01 - Contact with and (suspected) exposure to intestinal infectious diseases due to Escherichia coli (E. coli)
      • Z20.09 - Contact with and (suspected) exposure to other intestinal infectious diseases
    • Z20.1 - Contact with and (suspected) exposure to tuberculosis
    • Z20.2 - Contact with and (suspected) exposure to infections with a predominantly sexual mode of transmission
    • Z20.3 - Contact with and (suspected) exposure to rabies
    • Z20.4 - Contact with and (suspected) exposure to rubella
    • Z20.5 - Contact with and (suspected) exposure to viral hepatitis
    • Z20.6 - Contact with and (suspected) exposure to human immunodeficiency virus [HIV]
    • Z20.7 - Contact with and (suspected) exposure to pediculosis, acariasis and other infestations
    • Z20.8 - Contact with and (suspected) exposure to other communicable diseases
      • Z20.81 - Contact with and (suspected) exposure to other bacterial communicable diseases
        • Z20.810 - Contact with and (suspected) exposure to anthrax
        • Z20.811 - Contact with and (suspected) exposure to meningococcus
        • Z20.818 - Contact with and (suspected) exposure to other bacterial communicable diseases
      • Z20.82 - Contact with and (suspected) exposure to other viral communicable diseases
        • Z20.820 - Contact with and (suspected) exposure to varicella
        • Z20.821 - Contact with and (suspected) exposure to Zika virus
        • Z20.822 - Contact with and (suspected) exposure to COVID-19
        • Z20.828 - Contact with and (suspected) exposure to other viral communicable diseases
      • Z20.89 - Contact with and (suspected) exposure to other communicable diseases
    • Z20.9 - Contact with and (suspected) exposure to unspecified communicable disease

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.