> ## 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.

# device_extension_vcc_coding

Normalized `Device.extension[].valueCodeableConcept.coding[]` property on the [Device](https://hl7.org/fhir/R4/device.html) FHIR resource.

**Primary Keys:**

* device\_extension\_vcc\_coding\_id

**Foreign Keys:**

* device\_extension\_id - links to the [device\_extension](/medical-api/handling-data/schema-v100/device/extension) table

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

| Column                             | Data Type | Description                                         |
| ---------------------------------- | --------- | --------------------------------------------------- |
| device\_extension\_vcc\_coding\_id | varchar   | Unique identifier for the coding row                |
| device\_extension\_id              | varchar   | FK to the parent extension 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:**

* [device\_extension](/medical-api/handling-data/schema-v100/device/extension)