> ## 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.

# composition

A set of healthcare-related information that is assembled together into a single logical package that provides a single coherent statement of meaning, establishes its own context and that has clinical attestation with regard to who is making the statement. See the [HL7 FHIR R4 spec](https://hl7.org/fhir/R4/composition.html) for full details.

**Tables in this resource:**

* **composition** – Main composition record (this page)
* [composition\_type\_coding](/medical-api/handling-data/schema-v100/composition/type_coding)
* [composition\_section](/medical-api/handling-data/schema-v100/composition/section) – Sections within the document
* [composition\_section\_code\_coding](/medical-api/handling-data/schema-v100/composition/section_code_coding)
* [composition\_attester](/medical-api/handling-data/schema-v100/composition/attester) – Attestation information
* [composition\_event](/medical-api/handling-data/schema-v100/composition/event) – Event/period
* [composition\_section\_entry](/medical-api/handling-data/schema-v100/composition/section_entry) – Section entries
* [composition\_extension](/medical-api/handling-data/schema-v100/composition/extension)
* [composition\_extension\_vcc\_coding](/medical-api/handling-data/schema-v100/composition/extension_vcc_coding)
* **composition\_references** – [Reference Tables](/medical-api/handling-data/schema-v100/reference_tables)

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

**Primary Keys:**

* composition\_id

**Foreign Keys:**

* patient\_id – links to the [patient](/medical-api/handling-data/schema-v100/patient/base) table (`Composition.subject`)

| Column | Data Type | Description |
| - | - | - |
| composition\_id | varchar | Unique identifier for the composition |
| patient\_id | varchar | Unique identifier for the patient (`Composition.subject`) |
| status | varchar | Status of the composition |
| date | datetime | Composition date (`Composition.date`) |
| type\_text | varchar | Free-text type of the composition (`Composition.type.text`) |
| type\_loinc\_code† | varchar | LOINC type code (`Composition.type.coding` preferred binding) |
| type\_loinc\_display† | varchar | Human-readable description of LOINC type |
| title | varchar | Title of the composition (`Composition.title`) |
| identifier\_use | varchar | Identifier use (`Composition.identifier.use`) |
| identifier\_value | varchar | Identifier value (`Composition.identifier.value`) |
| confidentiality | varchar | Confidentiality code (`Composition.confidentiality`) |
| meta\_source | varchar | Source document filename from FHIR meta.source |
| data\_source\_ext† | varchar | Integration source derived from Metriport data-source extension |

**Related Tables:**

**Parent:**

* [patient](/medical-api/handling-data/schema-v100/patient/base)

**Child:**

* [composition\_attester](/medical-api/handling-data/schema-v100/composition/attester)
* [composition\_event](/medical-api/handling-data/schema-v100/composition/event)
* [composition\_extension](/medical-api/handling-data/schema-v100/composition/extension)
* [composition\_section](/medical-api/handling-data/schema-v100/composition/section)
* [composition\_type\_coding](/medical-api/handling-data/schema-v100/composition/type_coding)


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