Md. Code, Health - General § 20–602

(a) A surgical operation is not a violation of this subtitle if the operation is necessary to the health of the individual on whom it is performed and is performed by a person licensed in the State as a medical practitioner.

(b) In determining whether an operation is necessary to the health of the individual, no account may be taken of the belief on the part of any individual that the operation is required as a matter of custom or ritual.