---
schema_version: "1"
id: adc2d39eea0125c793fbff43dbb0bace741273e6f662ee43fee63a00ef522312
title: AL1 - Patient Allergy Information
collection: legacydeveloper
version: current
locale: en-us
portal_url: https://docs.salesforce.com/legacydeveloper/current/en-us/life_sciences_dev_guide/map_hl7_AL1.md
canonical_url: https://developer.salesforce.com/docs/atlas.en-us.life_sciences_dev_guide.meta/life_sciences_dev_guide/map_hl7_AL1.htm
source_site: developer.salesforce.com
content_type: documentation
content_hash: d9488c64bd4e31a92fcf3cf86bd1378ebb4902d4a120bddb04b21ce7fb7cae0d
description: The Patient Allergy Information (AL1) HL7 segment maps to the AllergyIntolerance object in Salesforce.
---
# AL1 - Patient Allergy Information

The Patient Allergy Information (AL1) HL7 segment maps to the AllergyIntolerance object in Salesforce.

## HL7 V2.3 - Clinical Data Model Mapping

Here’s how the segments defined by HL7 V2.3 for AL1 map to fields in Salesforce standard objects.

![Note](https://developer.salesforce.com/docs/atlas.en-us.life_sciences_dev_guide.meta/life_sciences_dev_guide/images/icon_note.png)

#### Note

Only the segments supported by Salesforce are mentioned below.

Table 1. AL1 - Salesforce
| AL1 | Salesforce Field | Type | Notes |
| --- | --- | --- | --- |
| AL1.2 - Allergy Type | AllergyIntolerance.Category | Picklist | N/A |
| AL1.3 - Allergy Code/Mnemonic/ Description | AllergyIntolerance.CodeId | Lookup: CodeSetBundle | N/A |
| AL1.4 - Allergy Severity | Patient​Health​Reaction​.Severity | Picklist | N/A |
| AL1.5 - Allergy Reaction | Patient​Health​Reaction​.Manifested​SymptomId | Lookup: CodeSetBundle | N/A |
| AL1.6 - Identification Date | onset​.onset​Date​Time | DateTime | N/A |