Sorry to hear 'spec.
I am VERY ignorant of all this stuff. I've had private medical insurance all my life. And up until recently, I had never been in a hospital for more than an ER visit.
I had THOUGHT Medicare was decent, but that is in the context of my dad's healthcare. But he also had excellent coverage from working 30+ years in the city. If I recall correctly, his dual coverage generally meant he didn't pay much, even for his many prescriptions. Thankfully, his health was generally "ok" until maybe 3-4 years ago. But when my sister and I started helping more, it opened our eyes to the "bunch of BS" that folks have to jump through. Even for someone who is relatively well covered like my dad. In his case, I believe Medicare was primary coverage and HMSA typically picked up everything else. That said, there are some pretty stupid rules you come across like what is covered for in-patient and what isn't. He's been admitted for surgery, so how can that NOT be in-patient? Well, it can and it does happen otherwise. Stupid, stupid, stupid.
When my dad had a fall and was in the hospital and then rehab, we got the bills many weeks later. Opened one of them and it was for rehab. The list of services was long, totaling in the tens of thousands. His payment required? Around $3. I was like

Looked at the detailed breakdown and it was for a box of Kleenex that he asked the nurse for one night. I remember because I was there.
Overall, my view of the "healthcare industry" is very jaded. Another aspect of America that has gotten twisted and the focus is on folks making $$$ as opposed to caring for those who need it.
Anyways, I digress.

Hope things work out well for you!