(b)(1) No misrepresentation shall avoid any contract of insurance or defeat recovery thereunder unless such misrepresentation was material. No misrepresentation shall be deemed material unless knowledge by the insurer of the facts misrepresented would have led to a refusal by the insurer to make such contract.

(2) With respect to a policy of hospital, medical, surgical, or prescription drug expense insurance subject to articles thirty-two or forty-three of this chapter, no misrepresentation shall avoid any contract of insurance or defeat recovery thereunder unless the misrepresentation was also intentional.

(c) In determining the question of materiality, evidence of the practice of the insurer which made such contract with respect to the acceptance or rejection of similar risks shall be admissible.

(d) A misrepresentation that an applicant for life or accident and health insurance has not had previous medical treatment, consultation or observation, or has not had previous treatment or care in a hospital or other like institution, shall be deemed, for the purpose of determining its materiality, a misrepresentation that the applicant has not had the disease, ailment or other medical impairment for which such treatment or care was given or which was discovered by any licensed medical practitioner as a result of such consultation or observation. If in any action to rescind any such contract or to recover thereon, any such misrepresentation is proved by the insurer, and the insured or any other person having or claiming a right under such contract shall prevent full disclosure and proof of the nature of such medical impairment, such misrepresentation shall be presumed to have been material.