---
title: r4
framework: healthkit
role: symbol
role_heading: Type Property
path: healthkit/hkfhirrelease/r4
---

# r4

The Release 4 (R4) release.

## Declaration

```swift
static let r4: HKFHIRRelease
```

## See Also

### Releases

- [dstu2](healthkit/hkfhirrelease/dstu2.md)
- [unknown](healthkit/hkfhirrelease/unknown.md)