Reminds me of this gem: https://www.youtube.com/watch?v=Sp-pU8TFsg0
Back on topic. I believe this is opt-out in my country (if it didn't change recently), so unless you specifically state that you want all your organs inside to feed the worms or to get more ash for your urn, you're automatically possible donor.
EDIT: Just checked, it's still opt-out. It's opt-in only for minors and incapacitated - their parents/legal representative have to agree.