N.C. Gen. Stat. § 90-401.1

It shall be unlawful for a health care provider or the provider's employee or agent to initiate direct personal contact or telephone contact with any injured, diseased, or infirmed person, or with any other person residing in the injured, diseased, or infirmed person's household, for a period of 90 days following the injury or the onset of the disease or infirmity, if the purpose of initiating the contact, in whole or in part, is to attempt to induce or persuade the injured, diseased, or infirmed person to become a patient of the health care provider. This section shall not be construed to prohibit a health care provider's use of posted letters, brochures, or information packages to solicit injured, diseased, or infirmed persons, so long as such use does not entail direct personal contact with the person.