D.C. Mun. Regs. tit. 22, r. 22-A3699
When used in this chapter, the following terms shall have the meaning ascribed:
Child Choice Provider - a Mental Health Rehabilitation Service (MHRS) Core Services Agency (CSA) certified as a Child Choice Provider pursuant to Chapter 35 (Child Choice Provider Certification Standards) of this title with demonstrated ability to provide quality, evidence-based, innovative services and interventions to meet the most complex and changing needs of children, youth, and their families in the District, particularly those who have histories of abuse or neglect.
Core Services Agency or "CSA" - a Department-certified community-based MHRS provider that has entered into a Human Care Agreement with the Department to provide specified MHRS. A CSA shall provide at least one core service directly and may provide up to three core services via contract with a sub-provider or subcontractor.
D.C. Mun. Regs. tit. 22, r. 22-A3699