18 Del. Admin. Code § 1317-5.0
When a facility-based provider or a health care provider requests a laboratory service for a covered person that does not require an in-person visit, that provider must provide disclosure to the covered person if the facility being utilized is an out-of-network facility. If the requesting provider does not provide the required disclosure to the covered person, the covered person shall not be subject to any balance billing of the out-of-network service(s). If the laboratory service being requested requires an in-person visit, the laboratory must provide the covered person written disclosure of the out-of-network service(s) and a consent form prior to rendering any service(s). If the laboratory does not provide the required disclosure to the covered person, the covered person shall not be subject to any balance billing.
18 Del. Admin. Code § 1317-5.0