> ## 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      |