(a) In a suit against a physician or health care provider involving a health care liability claim that is based on the negligent failure of the physician or health care provider to disclose or adequately disclose the risks and hazards involved in the medical care or surgical procedure rendered by the physician or health care provider:
(1) both disclosure made as provided in Section 74.104 and failure to disclose based on inclusion of any medical care or surgical procedure on the panel's list for which disclosure is not required shall be admissible in evidence and shall create a rebuttable presumption that the requirements of Sections 74.104 and 74.105 have been complied with and this presumption shall be included in the charge to the jury; and
(2) failure to disclose the risks and hazards involved in any medical care or surgical procedure required to be disclosed under Sections 74.104 and 74.105 shall be admissible in evidence and shall create a rebuttable presumption of a negligent failure to conform to the duty of disclosure set forth in Sections 74.104 and 74.105, and this presumption shall be included in the charge to the jury; but failure to disclose may be found not to be negligent if there was an emergency or if for some other reason it was not medically feasible to make a disclosure of the kind that would otherwise have been negligence.
(b) If medical care or surgical procedure is rendered with respect to which the disclosure panel has made no determination either way regarding a duty of disclosure, the physician or health care provider is under the duty otherwise imposed by law.