Immuniz not crd out bec patient allergy to vaccine or cmpnt

This code signifies that a patient was unable to receive a scheduled immunization due to a documented allergic reaction or hypersensitivity to the vaccine itself or one of its constituent ingredients. It indicates a contraindication to vaccination based on a specific immunological response.

Apply this code when a patient presents for a vaccination, but the medical record clearly states a history of allergy to the vaccine or a component, preventing its administration. This is appropriate for both acute allergic reactions and known, severe hypersensitivities.

• Always ensure the patient's medical record explicitly documents the allergy and its relation to the vaccine or component.
• Do not use this code for patient refusal or other non-allergic contraindications; specific codes exist for those scenarios.
• This code is typically a secondary diagnosis, indicating the reason for the immunization not being carried out.