Income Security Act of 1974 ( 29 U.S.C. 1001 et seq.), as amended by section 8(b)(4), is further amended by inserting after the item relating to section 717 the following new item: Sec. 718. Provision of cost-sharing information. . (B) IRC The table of sections for subchapter B of chapter 100 of the Internal Revenue Code of 1986, as amended by section 8(b)(4), is further amended by adding at the end the following new item: Sec. 9818. Provision of cost-sharing information. . (b) Provider requirements Part D of title XXVII of the Public Health Service Act, as added by section 3 and amended by section 6, is further amended by inserting before section 2799A–7 the following new section: 2799A–6. Provision of cost-sharing information A provider that is in-network with respect to a group health plan or a health insurance issuer offering group or individual health insurance coverage shall, upon request by a participant, beneficiary, or enrollee, provide to a participant, beneficiary, or enrollee in the plan or coverage the following information, together with accurate and complete information about the participant’s, beneficiary’s, or enrollee’s coverage under the applicable plan or coverage: (1) As soon as practicable and not later than 2 business days after the participant, beneficiary, or enrollee requests such information, a good faith estimate of the expected participant, beneficiary, or enrollee cost-sharing for the provision of a particular health care service (including any service that is reasonably expected to be provided in conjunction with such specific service). (2) As soon as practicable and not later than 2 business days after a participant, beneficiary, or enrollee requests such information, the contact information for any ancillary providers for a scheduled health care service. . (c) Effective date The amendments made by subsections (a) and (b) shall apply with respect to plan years beginning on or after the date that is 18 months after the date of enactment of this Act. 9. Transparency regarding