This is the last time I will answer your lazy and ignorant requests.
To follow up on your earlier quote:
Can you please tell me when we'll have healthcare rules relating to bearing arms, the number of children you can have, what you eat, and where you can drive, and how old you're allowed to be?
I'd like a date to make on the calendar, please.
The materials you just ignored shows in print that the NHS can arbitrarily delay treatment if they think you need to lose weight or stop smoking. They can do the same to women just because they have breasts.
The Liverpool Care Path (which you are also ignoring) is a well documented practice in which elderly people in the NHS are denied all care except pain killers when they are arbitrarily deemed too old to go on living at the state's expense.
But to answer your question directly- never in the USA. Because those attempting to implement them will fold when push comes to shove because they are cowards. Look at you. You can't even bear to read what is found for you.