> ## Documentation Index
> Fetch the complete documentation index at: https://docs.metriport.com/llms.txt
> Use this file to discover all available pages before exploring further.

# allergyintolerance_reaction_manifestation_coding

Normalized `AllergyIntolerance.reaction[].manifestation[].coding[]` property on the [AllergyIntolerance](https://hl7.org/fhir/R4/allergyintolerance.html) FHIR resource.

**Primary Keys:**

* allergyintolerance\_reaction\_manifestation\_coding\_id

**Foreign Keys:**

* allergyintolerance\_reaction\_manifestation\_id - links to the [allergyintolerance\_reaction\_manifestation](/medical-api/handling-data/schema-v100/allergyintolerance/reaction_manifestation) table

<div style={{textAlign: 'right'}}><sub>† Metriport Platform added</sub></div>

| Column                                                  | Data Type | Description                                                         |
| ------------------------------------------------------- | --------- | ------------------------------------------------------------------- |
| allergyintolerance\_reaction\_manifestation\_coding\_id | varchar   | Unique identifier for the coding row                                |
| allergyintolerance\_reaction\_manifestation\_id         | varchar   | FK to the parent allergyintolerance\_reaction\_manifestation record |
| code\_rank†                                             | int       | 1-based position of this coding in the source array                 |
| code                                                    | varchar   | Code value                                                          |
| display                                                 | varchar   | Human-readable display text                                         |
| system                                                  | varchar   | Coding system URI                                                   |

**Related Tables:**

**Parent:**

* [allergyintolerance\_reaction\_manifestation](/medical-api/handling-data/schema-v100/allergyintolerance/reaction_manifestation)