How long will Medicare pay?
Usually, Medicare pays for the first 30 days of admission to a skilled facility, following a hospital stay.
What if he "comes into money" very soon? Can we keep it safe from the state legally?
If he comes into money, it will not affect Medicare. Is he receiving state-funded care, Medicaid, instead of Medicare? If he is receiving Medicaid, then his share of the new money will be subject to being spent on his care in the facility. If the money is substantial, it could end his qualification for Medicaid until such time as the income has been spent on his care and he again qualifies for Medicaid. He can give a certain amount of his assets to another person; the amount he can give away depends on his state's laws.
Can the Nursing home take my mother-in-law's home or put a lien on it?
Your mother-in-law will not lose her home; her interest is protected by law. The nursing home can not take anything. Medicaid can place a lien on his estate in certain circumstances.
Example: In NC, Medicaid will pay for the first six months of nursing home placement; after that time, a lien will be placed on the person's assets and Medicaid will collect as much as possible after the person dies. So, in NC, if your in-law's home has no mortgage and is fully paid-for, then one-half of the value of the house would be considered your father-in-law's share and after six months of Medicaid-paid nursing home placement, Medicaid would place a lien on your father-in-law's interests in the house/land. After your father-in-law's death, Medicaid would act to collect on their lien; however, if your mother-in-law is still living and still residing in the home, then Medicaid would not be able to collect until after her death and then, could only collect from your father-in-law's portion of the value. In NC, each year (until his death), your father-in-law could give away $10,000 interests in his portion of the house, which would lessen the amount Medicaid could obtain for reimbursement.
If your father-in-law stands to 'come into some money', someone should put a stop to that, if possible.
I strongly suggest that your mother-in-law and your father-in-law (if he is able) meet with an estate attorney as soon as possible. Because of his change in health, his estate will be affected by his medical expenses and nursing home expenses. It may be that his will and/or your mother-in-law's will needs to be changed to address these issues. Also, an estate attorney should be able to not only help your in-laws protect their assets, but enable them to gift their heirs now, according to allowable limits, rather than after their (your in-laws') deaths.
I hope that answered your questions; those issues get kind of confusing!
EC