---
title: HKHealthConceptDomain
framework: healthkit
role: symbol
role_heading: Structure
path: healthkit/hkhealthconceptdomain
---

# HKHealthConceptDomain

A domain that represents a health concept.

## Declaration

```swift
struct HKHealthConceptDomain
```

## Overview

Overview A health concept describes what type of medical information a concept belongs to. For example, the medication domain groups all medication concepts together.

## Topics

### Initializers

- [init(rawValue:)](healthkit/hkhealthconceptdomain/init(rawvalue:).md)

### Type Properties

- [medication](healthkit/hkhealthconceptdomain/medication.md)

## Relationships

### Conforms To

- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [RawRepresentable](swift/rawrepresentable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Medication queries

- [HKClinicalCoding](healthkit/hkclinicalcoding.md)
- [HKHealthConceptIdentifier](healthkit/hkhealthconceptidentifier.md)
- [HKMedicationConcept](healthkit/hkmedicationconcept.md)
- [HKMedicationDoseEvent](healthkit/hkmedicationdoseevent.md)
- [HKMedicationDoseEventType](healthkit/hkmedicationdoseeventtype.md)
- [HKUserAnnotatedMedication](healthkit/hkuserannotatedmedication.md)
- [HKUserAnnotatedMedicationQuery](healthkit/hkuserannotatedmedicationquery.md)
- [HKUserAnnotatedMedicationType](healthkit/hkuserannotatedmedicationtype.md)
- [HKMedicationGeneralForm](healthkit/hkmedicationgeneralform.md)
- [HKUserAnnotatedMedicationQueryDescriptor](healthkit/hkuserannotatedmedicationquerydescriptor.md)