All healthcare systems have some form of rationing. Even if your doctor thinks something is medically necessary it can only get done if the system actually has capacity.

In most countries where there is universal coverage with a single payer, certain expensive treatments have long waiting lists or are simply unavailable at any price. Thus we see wealthy Canadians coming to the USA as medical tourists and paying cash for procedures like MRI scans or joint replacements in order to avoid the queue back home. There are always trade-offs, it's just a matter of what we want to prioritize.

yea queue is fine . i was wondering about gp's claim that universal would be more efficient because there is no more back and forth about approving.

i wasnt sure if it simply takes a different form or gets eliminated completly.