How to use/import Health Records (Medical Records / Clinical Documents) in iPhone Health App outside of the USA?

Hi community,

I would like to use the health records / clinical documents on my iPhone X running iOS 13.5.1. Apple has built in this feature into the Health app. In Health under "Browse" -> "Clinical Documents" is a note saying "Your medical provider may make your health records available as Clinical Document Architecture files (CDAs) on their website, by email or in an app. You can add these records to Health for your reference and to share with other providers".

So I found a list of supported healthcare providers in the USA (list) and a guide to import health records. But, I live in Germany and used to live in Singapore. So I have records from healthcare providers in these countries. However, the guide looks different on the Apple website than on my iPhone. I don't have the "Accounts / Health care providers" options in my profile.

Here's the thing: I understand that some institutions have build communication interfaces so their platforms can directly import records into the Health app. But since my iPhone is offering the feature also in Germany I was thinking there must be a way to convert and import existing clinical records manually, even outside the us.

Can anybody confirm this and explain how this would work? Or is the CDA format a format where I cannot convert older data into?

Thanks for your help