Except as provided in subsections (b), (c), (d), and (e), this Article shall apply to all companies transacting in this State the kinds of business enumerated in clause (b) of Class 1 and clause (a) of Class 2 of section 4. Nothing in this Article shall apply to, or in any way affect policies or contracts described in clause (a) of Class 1 of Section 4; however, this Article shall apply to policies and contracts which contain benefits providing reimbursement for the expenses of long term health care which are certified or ordered by a physician including but not limited to professional nursing care, custodial nursing care, and non-nursing custodial care provided in a nursing home or at a residence of the insured.