Maryland Code, Insurance § 15-711

(a) This section applies to each individual or group health insurance policy or contract that is:

(b) An insurer or nonprofit health service plan may not impose a time limit on the receipt of services covered under a policy or contract subject to this section that are provided during the policy or contract period by a physical therapist licensed under the Health Occupations Article.

(c) This section does not prohibit an insurer or nonprofit health service plan from imposing a limit on the number of visits with a licensed physical therapist that are allowed under a policy or contract.