No person is liable for the cost of the care, support, maintenance, and treatment of any patient except as provided in this title, but the amounts determined to be due under this title and unpaid at the time of the death of a patient or responsible person shall constitute a claim against the estate of such patient or legally responsible person. The Department of Social Services may accept voluntary payments on behalf of any patient from any person who is not liable for payments under this title.
SDCL 27A-13-12