N.Y. Comp. Codes R. & Regs. tit. 11, § 52.90
(a) This Part shall apply to accident and health insurance, except insurance defined in section 3201(b)(4) of the Insurance Law.
(1) On January 1, 1983 with respect to provisions of this Part previously promulgated on April 1, 1982 affecting:
(5) On January 15, 1987 with respect to section 52.23 of this Part promulgated on December 23, 1986 affecting:
(9) On January 1, 1990 with respect to amendments to sections 52.5, 52.6 and 52.7 of this Part promulgated on August 31, 1989, affecting:
(10) On January 1, 1991 with respect to amendments to sections 52.7 and 52.16(c)(2) of this Part promulgated on June 19, 1990 affecting:
(13) On May 1, 1991 with respect to amendments to sections 52.1 and 52.40(f) of this Part promulgated on January 29, 1991 affecting:
(ii) Existing in-force policies delivered in this State and existing coverage effectuated by participating employers principally located in this State on the first rating period which commences on or after January 1, 1992, provided that:
(14) On January 1, 1992 with respect to sections 52.12, 52.13, 52.25, 52.29 and 52.65, and amendments to sections 52.2, 52.10, 52.16, 52.17, 52.43, 52.45 and 52.54 of this Part promulgated on July 2, 1991 affecting:
(c) Section 52.24 of this Part shall apply to group (including group remittance policies issued by article 43 corporations) and school blanket health insurance policies which provide coverage for inpatient hospital care, as follows: