Final answer:
An involuntary lien placed on a deceased person's estate for unpaid debts is known as a decedent's or estate lien. The lien ensures creditors are paid in accordance with state laws before heirs receive their inheritance.
Step-by-step explanation:
The type of involuntary lien placed on a person's estate after their death if there are unpaid debts to creditors is commonly known as a decedent's lien or an estate lien.
When a person dies intestate, meaning without a legally valid will or trust, state intestacy laws will dictate the distribution of the estate's assets. Creditors have the right to file claims against the estate for debts owed by the deceased, and the courts may place a lien on the estate's assets to ensure that these debts are paid before any distribution to heirs.
If the estate does not have enough assets to cover all debts, a hierarchy established by law will determine the order in which creditors are paid.