It depends what's wrong.
When my husband was dying, the first week we were told his care would be paid for by the NHS, because he was on the Liverpool care pathway.
The second week he rallied, so we had a social worker who came to ask about finance.I lost count of the number of times I said I don't know, why don't you ask him?
He couldn't talk, eat or drink, give his own insulin injections, etc.
She went away and said she would let us know how much we would have to pay.
The next week he died. I never got a demand for the middle week.
That was six years ago this weekend.
Things might have changed since then.