N.C. Gen. Stat. § 58-51-45
No insurance company licensed in this State pursuant to the provisions of Articles 1 through 64 of this Chapter shall refuse to issue or deliver any policy (regardless of whether any of such policies shall be defined as individual, family, group, blanket, franchise, industrial or otherwise) which is currently being issued for delivery in this State, and which affords benefits or coverage for any medical treatment or service authorized or permitted to be furnished by a hospital, clinic, family health plan, neighborhood health plan, health maintenance organization, physician, physician's assistant, nurse practitioner or any medical service facility or personnel by reason of the fact that the person to be insured possesses sickle cell trait or hemoglobin C trait, nor shall any such policy issued and delivered in this State carry a higher premium rate or charge by reason of the fact that the person to be insured possesses said trait.
N.C. Gen. Stat. § 58-51-45