> ## 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.

# CodeableConcept

> Base StructureDefinition for CodeableConcept Type: A concept that may be defined by a formal reference to a terminology or ontology or may be provided by text.

## Properties

| Name | Required | Type | Description |
| - | - | - | - |
| id | No | string | Unique id for inter-element referencing |
| extension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Additional content defined by implementations |
| coding | No | [Coding](/medical-api/fhir/data-types/coding)\[] | Code defined by a terminology system |
| text | No | string | Plain text representation of the concept |


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