Cause: Health care is too expensive. Health spending wasted on administrative cost.
It seems to be a popular misconception that our healthcare is too expensive due to unnecessary administrative costs brought about by HMOs and insurance companies. I'm not saying you're suggesting it, because it's not clear from your post if you're saying just administrative costs are the factor, or whether general healthcare costs coupled with administrative costs are contributing to it. But it's not clear that you're not saying it, either.
Many studies have shown that the biggest single factor contributing to our expensive healthcare system is unnecessary tests, medications and care. Kaiser has some information online at
http://www.kaiseredu.org/topics_im.asp?imID=1&parentID=61&id=358 and they say "Some experts estimate that up to 30% of health care is unnecessary, emphasizing the need to streamline the health system and eliminate this needless spending." The same document suggests 7% of costs are due to administrative, with Medicare being less, at under 2%. It's pretty idealistic, but if we can get 20% of unnecessary costs eliminated and administrative costs reduced to those associated with Medicare, that's 25% of our healthcare costs eliminated.
We need to control costs, both administrative and medical, if we're ever going to make this managebale - universal healthcare or not. We provide a lot of expensive coverage that other countries simply don't do. We spend a lot of money prolonging people's lives for a few short weeks that other countries don't. Patients demand expensive, unnecessary treatment and medication, and rather than educate them, doctors just prescribe it. There are a whole host of reasons why these things happen.
We need to put limits on lawsuits against physicians and healthcare providers. Doctors have a huge expense in malpractice insurance, and plenty of people suggest that a big reason so many unnecessary tests are ordered is because of the fear of lawsuits.
There's a whole host of things we need to do to reduce costs, and just moving to a single-payer system alone won't fix it. (I'm not advocating for or against a single-payer system in this dicussusion, I'm merely stating that the cost reduction is a huge issue to tackle either way)