(B), shall be calculated using the amount or rate described in such subparagraph (or, in the case such plan or issuer uses a percentage of billed charges to determined the amount of payment for such provider, using a reasonable estimate of such percentage of such charges)). (D) The amount the enrollee has already accumulated with respect to any deductible or out of pocket maximum under the plan or coverage (broken down, in the case separate deductibles or maximums apply to separate enrollees in the plan or coverage, by such separate deductibles or maximums, in addition to any cumulative deductible or maximum). (E) Any shared savings or other benefit available to the enrollee with respect to such item or service. (F) In the case such plan or coverage imposes any frequency or volume limitations with respect to such item or service (excluding medical necessity determinations), the amount that such enrollee has accrued towards such limitation with respect to such item or service. (G) Any prior authorization, concurrent review, step therapy, fail first, or similar requirements applicable to coverage of such item or service under such plan or group or individual health insurance coverage. (3) Self-service tool For purposes of paragraph (1), a self-service tool established by a group health plan or health insurance issuer offering group or individual health insurance coverage meets the requirements of this paragraph if such tool— (A) is based on an Internet website, mobile application, or other platform determined appropriate by the Secretary