The majority in terms of cost or volume? Also is this figure including oncology treatments - those drugs can run 1k/pill and while some are potentially cures many more are just pushing eventual death a bit further off. These drugs would quite possibly skew any statistic that isn't designed precisely to account for them.

Also I think it's not really fair to take full lifetime costs into consideration at once. As you get older you'll be looking at those much more expensive treatments and covered by expensive insurance but the insurance tends to be of a higher quality when it comes to reducing sudden costs - I am more concerned about younger people who generally have terrible insurance and may get hit with 4 months of 20k physio due to a sudden injury but generally have low "normal" costs.