> ## 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.

# patient_identifier_type_coding

Normalized `Patient.identifier[].type.coding[]` property on the [Patient](https://hl7.org/fhir/R4/patient.html) FHIR resource.

**Primary Keys:**

* patient\_identifier\_type\_coding\_id

**Foreign Keys:**

* patient\_identifier\_id – links to [patient\_identifier](/medical-api/handling-data/schema-v100/patient/identifier)

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

| Column                                | Data Type | Description                                                   |
| ------------------------------------- | --------- | ------------------------------------------------------------- |
| patient\_identifier\_type\_coding\_id | varchar   | Unique identifier for the coding row                          |
| patient\_identifier\_id               | varchar   | FK to the parent patient\_identifier row                      |
| code\_rank†                           | int       | 1-based position of this coding in `identifier.type.coding[]` |
| code                                  | varchar   | Code value                                                    |
| display                               | varchar   | Human-readable display text                                   |
| system                                | varchar   | Coding system URI                                             |

**Related Tables:**

**Parent:**

* [patient\_identifier](/medical-api/handling-data/schema-v100/patient/identifier)