Del. Code tit. 16, § 6002

Any institution which has funds belonging to any patient of the institution, or deposited for the benefit of any patient, may commingle the funds by depositing them with the State Treasurer in an interest bearing account to be invested relatively free of risk on behalf of the beneficiaries according to the State’s Cash Management Policy. For the purpose of account reporting, an institution shall maintain supporting records that show the share each patient has in the account.