; and (B) remove any provider from such online directory search tool if such provider has not verified the directory information within the previous 6 months or the plan or issuer has been unable to verify the provider's network participation. (b) Cost-Sharing limitations A group health plan (or health insurance coverage offered in connection with such a plan) shall not apply, and shall ensure that no provider applies, cost-sharing to a participant or beneficiary for treatment or services provided by a health care provider in excess of the normal cost-sharing applied for such treatment or services provided in-network (including any balance bill issued by the health care provider involved), if such participant or beneficiary, or health care provider referring such participant or beneficiary, demonstrates (based on the electronic, written information described in subsection (a)(1)(A)(i)(I), the oral confirmation described in subsection (a)(1)(A)(i)(II) received by the participant or beneficiary not more than 30 days before the date the treatment or services were received, or a copy of the online provider directory described in subsection (a)(1)(A)(ii) on a date not more than 30 days before the date the treatment or services were received), that the participant or beneficiary relied on the information described in subsection (a)(1) for which such participant or beneficiary provides such documentation, that indicated that the provider is an in-network provider, if the provider was out-of-network at the time the treatment or service involved was received. (c) Definition For purposes of this section, the term provider directory information includes the names, addresses, specialty, and telephone numbers of individual health care providers, and the names, addresses, and telephone numbers of each medical group, clinic, or facility contracted to participate in any of the networks of the group health plan or health insurance coverage involved. . (c) IRC Subchapter B of chapter 100 of the Internal Revenue Code of 1986, as