My mom is 75 and has dementia, can she get long term care insurance? What would the cost be?

No, she is too old now. This is usually done before retirement.

My mom, 82 , diagnosed with Alzheimer’s in June 2019, purchased long term care through her place of employment while she was still working. She got the policy in 1995. Paid about 1200 a year. ( it increased over the years, was less when originally purchased). There is a 100 day elimination period. So I paid out of pocket for the first three months. Then I find out that the memory care facility she is in is licensed as assisted living, not skilled nursing. Her policy only covers 80 percent. Anyway I look at it, I’m glad she got it in the 1990’s. I think it’s absurd that all of the years she paid the premiums didn’t count towards the first hundred days, and it is a pain in the neck to deal with this, but no , I don’t think any insurance company will issue a policy once the diagnosis has been made

A good friend is an insurance agent and does not sell long term insurance after about 55 because the costs are staggering for what you get. He says that he can do better putting the premiums in a fund and at least the kids can inherit it if the person is killed in a wreck! It's not a good deal at all.

According to Google, once an individual is diagnosed with Alzheimer's, he or she will not be able to apply for long-term care insurance coverage.

Even if she were able to get LTC insurance, the cost would be absolutely staggering! A pre existing condition such as dementia or Alzheimer's is something that makes any insurance company run for the hills.

The time for LTC insurance was when your mother was a much younger & healthier person.

Good luck!