What is the correct code for an office visit for immunizations?

The correct code for an office visit specifically for immunizations is Z23. This code is utilized to indicate a patient seeking preventive care, particularly vaccinations. The Z23 code is categorized under the International Classification of Diseases, 10th Revision, Clinical Modification (ICD-10-CM) as a "Encounter for immunization," making it the appropriate choice for documenting an office visit primarily focused on administering vaccines.

The other options represent different health encounters or conditions: Z12 generally relates to screening examinations for certain diseases, Z15 is used for conditions that are the result of a previous disease diagnosis, and Z21 designates asymptomatic HIV status. Therefore, these codes do not apply to an office visit for the purpose of receiving immunizations.