About Section Z20-Z29

Section Z20-Z29 covers Persons with potential health hazards related to communicable diseases within Chapter 21 of the ICD-10-CM Tabular List. This section includes diagnosis codes ranging from Z20 to Z29. Each code below includes its description, billable status, and links to detailed coding guidelines.
Diagnosis Codes 85 entries
Z20Contact with and (suspected) exposure to communicable diseasesNon-Billable›Z20.0Contact with and (suspected) exposure to intestinal infectious diseasesNon-Billable›Z20.01Contact with and (suspected) exposure to intestinal infectious diseases due to Escherichia coli (E. coli)Billable›Z20.09Contact with and (suspected) exposure to other intestinal infectious diseasesBillable›Z20.1Contact with and (suspected) exposure to tuberculosisBillable›Z20.2Contact with and (suspected) exposure to infections with a predominantly sexual mode of transmissionBillable›Z20.3Contact with and (suspected) exposure to rabiesBillable›Z20.4Contact with and (suspected) exposure to rubellaBillable›Z20.5Contact with and (suspected) exposure to viral hepatitisBillable›Z20.6Contact with and (suspected) exposure to human immunodeficiency virus [HIV]Billable›Z20.7Contact with and (suspected) exposure to pediculosis, acariasis and other infestationsBillable›Z20.8Contact with and (suspected) exposure to other communicable diseasesNon-Billable›Z20.81Contact with and (suspected) exposure to other bacterial communicable diseasesNon-Billable›Z20.810Contact with and (suspected) exposure to anthraxBillable›Z20.811Contact with and (suspected) exposure to meningococcusBillable›Z20.818Contact with and (suspected) exposure to other bacterial communicable diseasesBillable›Z20.82Contact with and (suspected) exposure to other viral communicable diseasesNon-Billable›Z20.820Contact with and (suspected) exposure to varicellaBillable›Z20.821Contact with and (suspected) exposure to Zika virusBillable›Z20.822Contact with and (suspected) exposure to COVID-19Billable›Z20.828Contact with and (suspected) exposure to other viral communicable diseasesBillable›Z20.89Contact with and (suspected) exposure to other communicable diseasesBillable›Z20.9Contact with and (suspected) exposure to unspecified communicable diseaseBillable›Z21Asymptomatic human immunodeficiency virus [HIV] infection statusBillable›Z22Carrier of infectious diseaseNon-Billable›Z22.0Carrier of typhoidBillable›Z22.1Carrier of other intestinal infectious diseasesBillable›Z22.2Carrier of diphtheriaBillable›Z22.3Carrier of other specified bacterial diseasesNon-Billable›Z22.31Carrier of bacterial disease due to meningococciBillable›Z22.32Carrier of bacterial disease due to staphylococciNon-Billable›Z22.321Carrier or suspected carrier of Methicillin susceptible Staphylococcus aureusBillable›Z22.322Carrier or suspected carrier of Methicillin resistant Staphylococcus aureusBillable›Z22.33Carrier of bacterial disease due to streptococciNon-Billable›Z22.330Carrier of Group B streptococcusBillable›Z22.338Carrier of other streptococcusBillable›Z22.34Carrier of Acinetobacter baumanniiNon-Billable›Z22.340Carrier of carbapenem-resistant Acinetobacter baumanniiBillable›Z22.341Carrier of carbapenem-sensitive Acinetobacter baumanniiBillable›Z22.349Carrier of Acinetobacter baumannii, unspecifiedBillable›Z22.35Carrier of EnterobacteralesNon-Billable›Z22.350Carrier of carbapenem-resistant EnterobacteralesBillable›Z22.358Carrier of other EnterobacteralesBillable›Z22.359Carrier of Enterobacterales, unspecifiedBillable›Z22.39Carrier of other specified bacterial diseasesBillable›Z22.4Carrier of infections with a predominantly sexual mode of transmissionBillable›Z22.6Carrier of human T-lymphotropic virus type-1 [HTLV-1] infectionBillable›Z22.7Latent tuberculosisBillable›Z22.8Carrier of other infectious diseasesBillable›Z22.9Carrier of infectious disease, unspecifiedBillable›Z23Encounter for immunizationBillable›Z28Immunization not carried out and underimmunization statusNon-Billable›Z28.0Immunization not carried out because of contraindicationNon-Billable›Z28.01Immunization not carried out because of acute illness of patientBillable›Z28.02Immunization not carried out because of chronic illness or condition of patientBillable›Z28.03Immunization not carried out because of immune compromised state of patientBillable›Z28.04Immunization not carried out because of patient allergy to vaccine or componentBillable›Z28.09Immunization not carried out because of other contraindicationBillable›Z28.1Immunization not carried out because of patient decision for reasons of belief or group pressureBillable›Z28.2Immunization not carried out because of patient decision for other and unspecified reasonNon-Billable›Z28.20Immunization not carried out because of patient decision for unspecified reasonBillable›Z28.21Immunization not carried out because of patient refusalBillable›Z28.29Immunization not carried out because of patient decision for other reasonBillable›Z28.3Underimmunization statusNon-Billable›Z28.31Underimmunization for COVID-19 statusNon-Billable›Z28.310Unvaccinated for COVID-19Billable›Z28.311Partially vaccinated for COVID-19Billable›Z28.39Other underimmunization statusBillable›Z28.8Immunization not carried out for other reasonNon-Billable›Z28.81Immunization not carried out due to patient having had the diseaseBillable›Z28.82Immunization not carried out because of caregiver refusalBillable›Z28.83Immunization not carried out due to unavailability of vaccineBillable›Z28.89Immunization not carried out for other reasonBillable›Z28.9Immunization not carried out for unspecified reasonBillable›Z29Encounter for other prophylactic measuresNon-Billable›Z29.1Encounter for prophylactic immunotherapyNon-Billable›Z29.11Encounter for prophylactic immunotherapy for respiratory syncytial virus (RSV)Billable›Z29.12Encounter for prophylactic antiveninBillable›Z29.13Encounter for prophylactic Rho(D) immune globulinBillable›Z29.14Encounter for prophylactic rabies immune globinBillable›Z29.3Encounter for prophylactic fluoride administrationBillable›Z29.8Encounter for other specified prophylactic measuresNon-Billable›Z29.81Encounter for HIV pre-exposure prophylaxisBillable›Z29.89Encounter for other specified prophylactic measuresBillable›Z29.9Encounter for prophylactic measures, unspecifiedBillable›