You keep talking around the point and moving the goalposts. I never criticized Medicare and Medicaid. I criticized the US system which outspends all other developed nations, while obtaining poorer results. A lot more money is being spent but looking at the end results it's clearly not going to the right places. So where is the money going? That's the very definition of mismanagement and corruption.
Medicare and Medicaid are expensive because we incorrectly apply market economics to healthcare.
None of that requires corruption. It's a mixture of over-commitment to market-based solutions and a bare minimum of empathy enshrined into law.