Iowa Code § 804.28: Department of public safety prisoners.

The sheriff of any county shall accept for custody in the county jail of the sheriff’s respective county any person handed over to the sheriff for safekeeping and lodging by any member of the department of public safety. The county shall not be liable for medical treatment for injuries incurred by a person before the person is transferred to the custody of the sheriff. Any expenses payable by the state pursuant to this section shall be paid out of any moneys in the state treasury not otherwise appropriated. The expenses shall be paid on claims filed with the department of administrative services.