---
title: HKMetadataKeyInsulinDeliveryReason
framework: healthkit
role: symbol
role_heading: Global Variable
path: healthkit/hkmetadatakeyinsulindeliveryreason
---

# HKMetadataKeyInsulinDeliveryReason

The medical reason for administering insulin.

## Declaration

```swift
let HKMetadataKeyInsulinDeliveryReason: String
```

## Discussion

Discussion This key is required for insulinDelivery samples. It takes an NSNumber object containing a HKInsulinDeliveryReason value.

## Topics

### Valid Delivery Reasons

- [HKInsulinDeliveryReason](healthkit/hkinsulindeliveryreason.md)