Md. Code, Insurance § 27–902

(a) A policy or contract of motor vehicle insurance may not be canceled or nonrenewed solely because of:

(1) the age of the holder of the policy or contract; or

(2) the physical handicap or disability of the holder of the policy or contract.

(b) The premium for a policy or contract of motor vehicle insurance may not be increased solely because:

(1) an insured under the policy or contract is older than 65 years of age; or

(2) the holder of the policy or contract has a physical handicap or disability, unless there is actuarial justification for the increase.