myCSS support
Do you have questions about the app or are you experiencing problems? Our client specialists will be happy to answer your questions in person.
Frequently asked questions
Anyone who is over 18 and has health insurance with the CSS Group.
You can find the myCSS login at my.css.ch.
Don’t have an account yet? You can register quickly and easily in just five minutes. You’ll need your client number, a mobile phone, an email address, your AHV number and a CSS document number. Register now
A useful tip: Your client number and AHV number are printed on your insurance card. You’ll receive an SMS code, so make sure your mobile phone is within reach.
No problem – we’ll be happy to help. If the registration is not working, please check your internet connection and registration details. If the problem persists, please write to us using the contact form or call our Support team on 0844 277 397.