ICD-10 requires only one code (Z23) per vaccination, regardless if single or combination. Report Z23 for all vaccination diagnoses.
Sample of new ICD-10-CM codes for 2022R05.1Acute coughT40.715Adverse effect of cannabisT80.82xSComplication of immune effector cellular therapy, sequelaU09Post COVID-19 conditionZ71.85Encounter for immunization safety counseling1 more row•Jul 8, 2021
Interestingly, unlike many codes, vaccinations do not get more complicated in ICD-10. Code Z23 is used to indicate any encounter for a vaccination. The procedure codes are used to identify the type of the immunization given and how it was administered.Nov 24, 2020
ICD-10-CM Description Clinicians may assign code Z28. 311, “Partially vaccinated for COVID-19,” when the patient has received at least one dose of a multi-dose COVID-19 vaccine regimen, but has not received the doses necessary to meet the CDC definition of “fully vaccinated” at the time of the encounter.Mar 7, 2022
Other specified counselingICD-10 code Z71. 89 for Other specified counseling is a medical classification as listed by WHO under the range - Factors influencing health status and contact with health services .
The code Z71. 89 describes a circumstance which influences the patient's health status but not a current illness or injury. The code is unacceptable as a principal diagnosis.
If the immunization is related to exposure (eg, the administration of a Tdap vaccine as a part of wound care), the ICD-10 code describing the exposure should be used as the primary diagnosis code for the vaccine, and Z23 should be used as the secondary code.
The Z23 code includes the following note: “Code first any routine childhood examination.” Therefore, when you provide immunizations in conjunction with a well-child visit, a code for routine child health examination should be reported first, followed by Z23 for any immunizations.
Z23 is a billable diagnosis code used to specify a medical diagnosis of encounter for immunization.
Coding for flu vaccine The ICD-10 code to use for flu vaccination is Z23, encounter for immunization.Sep 28, 2020
(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.
2022 ICD-10-CM Diagnosis Code Z28. 20: Immunization not carried out because of patient decision for unspecified reason.