; attestation For purposes of applying subclause (I) with respect to an integrated care practitioner demonstrating the capacity to furnish integrated mental health and substance use disorder care services, the Secretary shall issue guidance, not later than one year after the date of the enactment of this paragraph, describing requirements for demonstrating capacity to provide such services and establishing a process for the Secretary to receive an attestation that an integrated care practitioner has such capacity. Such guidance and attestation may not impose additional burden on small practices (as defined for purposes of subsection (q)(11)) and practices located in rural areas. (C) Payment (i) Amount of payment The fee schedule amount for integrated mental health and substance use disorder care services shall not be less than the fee schedule amount for services described by HCPCS code G2211 (or any successor or substantially similar code). (ii) Add-on services If, during the furnishing of an evaluation and management service to an individual by an integrated care practitioner, such practitioner also furnishes (or coordinates the furnishing of) integrated mental health and substance use disorder care services on the same date of service, payment shall also be made for such integrated mental health and substance used disorder care services even if the individual did not previously have a mental health or substance use disorder diagnosis. (iii) Payment considerations In carrying out this paragraph, the Secretary shall ensure that the amount of payment for integrated mental health and substance use disorder care services under this paragraph is sufficient to sustain effective and accessible integrated mental health and substance use disorder care under this part, as determined by evidence from practice expenses of those implementing effective integrated care as well as evidence of the resource needs of integrated care practitioners who furnish such services in mental health professional shortage areas (as