42 C.F.R. § 438.208
(3) Exception for MCOs that serve dually eligible enrollees.
(b) Care and coordination of services for all MCO, PIHP, and PAHP enrollees. Each MCO, PIHP, and PAHP must implement procedures to deliver care to and coordinate services for all MCO, PIHP, and PAHP enrollees. These procedures must meet State requirements and must do the following:
(2) Coordinate the services the MCO, PIHP, or PAHP furnishes to the enrollee:
(c) Additional services for enrollees with special health care needs or who need LTSS—(1) Identification. The State must implement mechanisms to identify persons who need LTSS or persons with special health care needs to MCOs, PIHPs and PAHPs, as those persons are defined by the State. These identification mechanisms—
(3) Treatment/service plans. MCOs, PIHPs, or PAHPs must produce a treatment or service plan meeting the criteria in paragraphs (c)(3)(i) through (v) of this section for enrollees who require LTSS and, if the State requires, must produce a treatment or service plan meeting the criteria in paragraphs (c)(3)(iii) through (v) of this section for enrollees with special health care needs that are determined through assessment to need a course of treatment or regular care monitoring. The treatment or service plan must be: