Nothing in this chapter shall be construed to do any of the following:
(1) Interfere with the rights of a patient's agent operating under a valid advance health-care directive under Chapter 25 of this title.
(2) Interfere with a valid Delaware Medical Orders for Scope of Treatment (DMOST) under Chapter 25A of this title.
(3) Remove the obligation of a third-party payer to cover any health-care item or service that the third-party payer is obligated to provide to a patient under the terms of a valid agreement, insurance policy, plan, certificate of coverage, or managed care organization contract.
(4) Otherwise supersede or replace existing rights, remedies, or procedures under any other law.
(5) Otherwise conflict with or replace any of the Center for Medicare and Medicaid Services Conditions of Participation.