---
title: documentData
framework: healthkit
role: symbol
role_heading: Instance Property
path: healthkit/hkcdadocument/documentdata
---

# documentData

The CDA document stored as XML data.

## Declaration

```swift
var documentData: Data? { get }
```

## Discussion

Discussion The CDA document’s XML format is specified by the Clinical Document Architecture, R2 standard. . When using an HKDocumentQuery object to retrieve documents from the HealthKit store, if the query’s includeDocumentData property is set to false, the retrieved documents will have nil-valued documentData properties.

## See Also

### Accessing the Document’s Data

- [authorName](healthkit/hkcdadocument/authorname.md)
- [custodianName](healthkit/hkcdadocument/custodianname.md)
- [patientName](healthkit/hkcdadocument/patientname.md)
- [title](healthkit/hkcdadocument/title.md)