N.C. Gen. Stat. § 58-51-116

An employee benefit plan as defined in ERISA shall not include any provision which, because an individual is provided or is eligible for benefits or service pursuant to a State plan under Title XIX of the Social Security Act (Medicaid), has the effect of limiting or excluding coverage or payment for any health care for that individual under the terms of the employee benefit plan, provided that the individual is one who would otherwise be covered or entitled to benefits or services under the employee benefit plan.