Any party who has won a suit against someone for owed financial compensation can place a lien on that persons home for the money owed. It doesn't have to be part of a contract or agreement earlier entered into. The attachment is often referred to as a Mechanics Lien.
Sure, liens are placed on property as a result from judgments.
I think a Mechanic's lien would be a different animal.
Point is they were making the arranged payments. This wasn't fast enough for this hospital. Looks like this particular facility is impatient quite often.
"...... Superior Court shows the hospital filed 165 such suits last year...."