623210 Residential Mental Retardation Facilities This industry comprises establishments (e.g., group homes, hospitals, intermediate care facilities) primarily engaged in providing residential care services for persons diagnosed with mental retardation. These facilities may provide some health care, though the focus is room, board, protective supervision, and counseling. The data published with NAICS code 623210 are comprised of this part of the following SIC industry: 805 (pt) Residential Mental Retardation Facilities