All practices, rules, and procedures of a medical service corporation, involving termination or refusal to renew coverage, modification of coverage or rates in the case of persons classified as left-group, selection of risks, and underwriting classifications, shall be subject to review at any time by the commissioner and upon his request for information relative to any such practice, rule, or procedure the medical service corporation shall furnish such information in writing without delay. See definition section N.J. Rev. Stat. § 17:48A-1.