Maybe this is a good moment to dust off your Spanish, Sam? 
That's unfortunately very common for new or even slightly "experimental" treatments. My brother has a very rare cancer and thankfully there is a useful drug for treating it. But that drug may or may not ever come to market because it has a such a limited niche market, it may never be worth the push. I'll have to ask him how or whether he worked out anything with his insurance provider.The insurance company has denied the request for Leqembi treatment.
Good for you, Sam. Yours is a life worth fighting for. Best wishes to you and yours this holyday season.Anyways, better news at least.
I needed a very expensive series of infusions for a serious condition I had. Each time, the insurance company would deny it and after talking to them multiple times would claim the doctor used the wrong diagnosis code, and after changing it they would pay. I knew it was all BS when the code said I needed the previous time was rejected as wrong the next time, and told me to use the one they rejected last time. It is all a ploy to see if you will give up. I never did and I am now cured.Talked with the insurance company (United Health Care) and apparently the doctor's office didn't fill out the request correctly.
I hope and pray that it slows the progression significantly. I realized when I was diagnosed with diabetes, a progressive and fatal disease, that the objective was to slow the rate of progression so that something else killed me first. The juries out on whether I'm going to achieve that goal, as I have not been very successful at faithfully doing what I need to be doing to so. Hopefully these treatments go a long way to achieving that end for you.There is no cure for Alzheimer's disease, but this will slow its progression and may help improve some its effects I'm already having.