Md. Code, Health Occupations § 2–314.2

While practicing audiology or hearing aid dispensing, an audiologist or a hearing aid dispenser may not:

(1) Advertise a particular model, type, or kind of hearing aid for sale while intending:

(i) 1. Not to allow an individual who responds to the advertisement to buy the hearing aid advertised; or

2. To dissuade an individual who responds to the advertisement from buying the hearing aid advertised; and

(ii) To obtain for a prospective buyer a model, type, or kind of hearing aid that differs from that advertised; or

(2) Falsely represent the use or availability of services or advice of a physician for providing hearing aid services.