According to ICD-10-CM guidelines, clinicians may assign code Z28. 310, “Unvaccinated for COVID-19,” when the patient has not received a dose of any COVID-19 vaccine.
ICD-10-CM Code for Encounter for immunization Z23.
Two websites ( here and icdlist.com/icd-10/Z28.20 ) define the code “ICD 10 code Z28. 20” as “Immunization not carried out because of patient decision for unspecified reason.” It also covers other vaccines such as Tdap and polio.
The adult annual exam codes are as follows: Z00. 00, Encounter for general adult medical examination without abnormal findings, Z00.
Report codes 90471-90474 for immunization administration of any vaccine that is not accompanied by face-to-face physician or other qualified health care professional counseling the patient and/or family, or for patients over 18 years of age.
Z23 may be used as a primary diagnosis for immunizations in the OP and physician setting.
Code Z23, which is used to identify encounters for inoculations and vaccinations, indicates that a patient is being seen to receive a prophylactic inoculation against a disease. If the immunization is given during a routine preventive health care examination, Code Z23 would be a secondary code.
Public health A level of immunization which is suboptimal for a person or population Causes Financial factors, mother's age, race, education, socioeconomic status, birth order, prenatal care. See Racial inequaliy.
The ICD-10-CM (International Classification of Diseases, Tenth Revision, Clinical Modification) is a system used by physicians and other healthcare providers to classify and code all diagnoses, symptoms and procedures recorded in conjunction with hospital care in the United States.
An initial Annual Wellness Visit code is documented using G0438, subsequent Annual Wellness Visits are documented using code G0439.
Essentially, the goal of preventive care is to detect health problems before symptoms develop, while diagnostic care is given to diagnose or treat symptoms you already have. Preventive care is frequently received during a routine physical. Diagnostic care may result if a preventive screening detects abnormal results.
G0439 Annual Wellness Visit, Subsequent (AWV) Annual Wellness Visits can be for either new or established patients as the code does not differentiate. The initial AWV, G0438, is performed on patients that have been enrolled with Medicare for more than one year.