[Code of Federal Regulations] [Title 42, Volume 2] [Revised as of October 1, 2005] From the U.S. Government Printing Office via GPO Access [CITE: 42CFR418.84] [Page 921] TITLE 42--PUBLIC HEALTH CHAPTER IV--CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES PART 418_HOSPICE CARE--Table of Contents Subpart D_Conditions of Participation: Core Services Sec. 418.84 Condition of participation--Medical social services. Medical social services must be provided by a qualified social worker, under the direction of a physician.