N.Y. Insurance Law § 4904
(c) A utilization review agent shall establish a standard appeal process which includes procedures for appeals to be filed in writing or by telephone. A utilization review agent must establish a period of no less than forty-five days after receipt of notification by the insured of the initial utilization review determination and receipt of all necessary information to file the appeal from said determination. The utilization review agent must provide written acknowledgment of the filing of the appeal to the appealing party within fifteen days of such filing and shall make a determination with regard to the appeal within thirty days of the receipt of necessary information to conduct the appeal and, upon overturning the adverse decision, shall comply with subsection (a) of section three thousand two hundred twenty-four-a of this chapter as applicable. The utilization review agent shall notify the insured, the insured's designee and, where appropriate, the insured's health care provider, in writing of the appeal determination within two business days of the rendering of such determination. The notice of the appeal determination shall include: