Section 717 - Opinions and testimony(a) Any chiropractor who is duly licensed as a chiropractic practitioner under this chapter shall be deemed competent to offer opinions in the courts, administrative agencies and other tribunals of this State as to matters of causation, within the scope of chiropractic practice, provided the testimony is offered to a reasonable degree of chiropractic certainty and there is otherwise an adequate foundation for the admission of this testimony. (b) Any chiropractor duly licensed under this chapter shall also be deemed competent to offer opinions in the courts, administrative agencies and other tribunals of this State as to matters of permanent impairment or disability, provided the testimony is within the scope of chiropractic practice, is offered to a reasonable degree of chiropractic certainty and there is otherwise an adequate foundation of the admission of this testimony.(c) No Doctor of Chiropractic shall be permitted to offer chiropractic opinions for the purpose of determining eligibility for health insurance policy benefits relating to chiropractic care in the State unless the Doctor of Chiropractic is duly licensed and actively practicing in the State. For purposes of this subsection, a Doctor of Chiropractic shall be considered "actively practicing" if that Doctor of Chiropractic maintains an office in the State for treatment of patients and is engaged in the practice of chiropractic in the State more than an average of 10 hours per week. For purposes of this section "insurance policy" shall include without limitation all health plans and policies for the payment for, provision of or reimbursement for chiropractic or medical services, supplies or both issued by health insurers, health service corporations or managed care organizations.74 Del. Laws, c. 5, §1; 70 Del. Laws, c. 186, § 1; 75 Del. Laws, c. 380, § 1.;