in mental health and substance use disorder care. Sec. 403. Reviewing the evidence for integrated mental health care for children. Sec. 404. Enhancing oversight of integrated mental health and substance use disorder care. I Medicare part B provisions 101. Payment under the Medicare physician fee schedule for inherently complex evaluation and management visits related to integrated mental health and substance use disorder care (a) In general Section 1848(b) of the Social Security Act ( 42 U.S.C. 1395w–4(b) ) is amended by adding at the end the following new paragraph: (13) Payment for inherently complex evaluation and management visits related to integrated mental health and substance use disorder care (A) In general The Secretary shall establish a new HCPCS add–on code under the fee schedule established under this subsection for integrated mental health and substance use disorder care services (as defined in subparagraph (B)(i)) that are furnished on or after January 1, 2025, when furnished by an integrated care practitioner on the same date of service that a service in the HCPCS category of office and other outpatient evaluation and management services is furnished. Such add-on code may be similar to HCPCS code G2211. (B) Definitions In this paragraph: (i) Integrated mental health and substance use disorder care services (I) In general The term integrated mental health and substance use disorder care services means services described in subclause (II) that are furnished by an integrated care practitioner. (II) Services described The services described in this subclause are the following: (aa) Preventive services and screening for mental health and substance use disorders that the Secretary determines are— (AA) reasonable and necessary for the prevention or early detection of a mental health or substance use disorder