Md. Code, Health - General § 5–505

(a) Except as provided in subsection (b) of this section, a person may not require that a cremation be performed with a casket. However, the use of a simple container may be required.

(b) The person arranging for final disposition of a body may specify that a casket:

(1) Be used before cremation;

(2) Be consumed during cremation;

(3) Be used after cremation; or

(4) Not be used before, during, or after cremation.