If the medical treatment guidelines do not address a condition, treatment or diagnostic test for a part of the body covered by the medical treatment guidelines, then the factors in section 324.3(a)(3) of this Part and relevant medical literature as described in section 324.3(a)(4) of this Part shall be used to determine whether the insurance carrier or special fund shall be obligated or not obligated to pay for the medical care at issue.
N.Y. Comp. Codes R. & Regs. Tit. 12 § 324.5