An allergy clinic performs percutaneous allergy skin testing for 20 antigens. How should units be conceptualized?
Select an answer to reveal the explanation.
Short Explanation
Each antigen prick is like a separate quiz question on the arm. Percutaneous skin-test coding usually counts antigens—or follows the family’s unit rule from that count. Twenty tests aren’t one vague ‘allergy visit’ and they aren’t excisions or shots.
Full Explanation
Percutaneous allergy skin testing is reported with unit concepts tied to the number of antigens tested. Accurate counts from documentation drive units. Surgical excision and immunotherapy injection families represent different services and should not replace skin-test reporting when testing was performed.