Md. Code, Estates and Trusts § 18–103

(a) An adult may utilize supported decision making to:

(1) Increase the adult’s self–determination;

(2) Prevent the need for the appointment of a substitute decision maker; or

(3) Limit or terminate the use of a substitute decision maker.

(b) All adults are presumed capable of making a supported decision–making agreement.

(c) The manner in which an adult communicates with others is not grounds for determining that the adult is incapable of making, changing, or revoking a supported decision–making agreement.

(d) Execution of a supported decision–making agreement by an adult may not:

(1) Be used as evidence of incapacity; or

(2) Preclude the ability of the adult to:

(i) Act independently of a supported decision–making agreement; or

(ii) Access the adult’s personal information without a supporter.