under section 1945(c)(1), and, with respect to payments for services described in section 1945(h)(4)(B) provided by an EPHH to children with complex medical conditions enrolled with the EPHH during the first 8 fiscal quarters in which the EPHH program agreement is in effect, the Federal medical assistance percentage applicable to such payments shall be equal to the Federal medical assistance percentage specified in section 1945(c)(1). (2) Alternative payment model methodology Payment to enhanced pediatric health homes for EPHH services furnished pursuant to a EPHH program agreement shall be made in a manner to be determined by the State using an agreed-upon alternative payment methodology developed under paragraph (4). (3) CMS guidance on alternative payment model methodologies (A) In general Not later than January 1, 2018, the Secretary shall publish guidance describing best practices for States to employ in designing and establishing alternative payment model methodologies which may be used by enhanced pediatric health homes with EPHH program agreements in developing equitable, alternative payment model methodologies for EPHH programs under paragraph (4). The guidance shall include descriptions of best practices related to designing shared savings and performance-based payment models that are risk-adjusted for the population enrolled in EPHH programs, and may include guidance related to other alternative payment models, including global payments and bundled payments. (B) Stakeholder input In carrying out subparagraph (A), the Secretary shall issue a Request for Information to seek input from States, the Medicaid and CHIP Payment and Access Commission, providers (including children's hospitals, hospitals, pediatricians, and other pediatric providers), managed care plans, children's health groups, family and beneficiary advocates, the pediatric health care community, and other relevant stakeholders. (C) Data analysis Beginning in the first year of the implementation of enhanced pediatric health homes, the