https://wccftech.com/you-can-share-your-medical-id-during-an-emergency-call-in-ios-13-5/

Apple released iOS 13.5 beta 4 yesterday and the company is introducing another health-related feature on iPhone and Apple Watch. According to the findings, Apple will share your Medical ID with emergency services and first responders. If you're running the latest beta build, the Medical ID data will be prompted to you when you open the Health app.

iOS 13.5 will be rolled out to all users in a couple of weeks and as of now, it rests in the beta phase. You might already be familiar with Medical ID as t allows you to stores your important health information in one place. First responders can access their Medical ID on the Lock Screen without the need to unlock the iPhone. On the Apple Watch, the Medical ID can be accessed by pressing the Side button.