Medical liability

There is a link for you in post 5, and another in post 11.

Lawsuit is the designated mechanism for enforcing standards of care in a free market, unregulated system.
Threat of lawsuit is a significant driver of medical costs, in various ways (insurance premiums, defensive medicine, extra record keeping, etc), as an item of common knowledge among the well informed - documented in those links (they contain references, etc). (Whether or not the lawsuits are frivolous is beside the point).
That's one way the pretense of free market competition drives up medical care costs in the US.
Again, I suggest you go back and read my previous posts.