---
title: Allergy Elements
slug: eprescribing/guide/allergy-elements
docTags: 
createdAt: 2026-06-23T17:33:46.144Z
---

## Allergy Elements

| **Element Name**                                 | **Codes**             | **Comments**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| ------------------------------------------------ | --------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| AllergyOrAdverseEvent                            | **conditional&#xA0;** | Used to transmit patient allergies and adverse events. A choice of NoKnownAllergies or the Allergies element is required.<br />NoKnownAllergies - Used to communicate that the patient does not have known allergies.<br />Allergies - Used to communicate the known allergy or adverse information.<br />**Note:&#x20;**&#x57;hen prescribing a product that the patient also shows an allergy to, the DrugUseEvaluation elements should be included to show prescriber acknowledges the conflict. |
| Allergies/<br />DrugProductCoded/<br />Qualifier | **conditional&#xA0;** | `business rule `<br />A Qualifier should be sent whenever a code is sent.                                                                                                                                                                                                                                                                                                                                                                                                                           |