| ADD | Attention Deficit Disorder |
| ADHD | Attention Deficit Disorder with Hyperactivity |
| ARC | Arc - Pennsylvania |
| ASH | Allentown State Hospital |
| BHRSCA | Behavioral Health Rehabilitation Services for Children and Adolescents |
| BSU | Base Service Unit |
| CASSP | Children and Adolescent Services System Project |
| CDC | Center for Disease Control |
| C&E | Consultation and Education |
| CHIP | Children's Health Insurance Program |
| CHIPP | Community Hospital Integration Program Project |
| CMHC | Community Mental Health Center |
| CRF | Community Residential Facility |
| CRR | Community Residential Rehabilitation |
| CSP | Community Support Program for Adults |
| C&Y | Children and Youth |
| D&A | Drug and Alcohol |
| DD | Developmental Disabilities |
| DPW | Department of Public Welfare |
| EI | Early Intervention |
| EPSDT | Early Periodic Screening and Diagnostic Testing |
| FACT | Family and Child Together (Family-Based Mental Health Program) |
| FSS | Family Support Services |
| GAF | Global Assessment of Functioning (DSM-IV) |
| HBW | Home-Based Waiver |
| HCCU | Health Care Coordination Unit |
| HHS | Health and Human Services (U.S. Department of) |
| HMO | Health Maintenance Organization |
| ICM | Intensive Case Management |
| IFSP | Individualized Family Service Plan |
| IMT | Independent Monitoring Team |
| IP | Inpatient |
| I&R | Information and Referral |
| ISP | Individual Service Plan |
| IU | Intermediate Unit |
| JCAHO | Joint Commission on Accreditation of Hospitals |
| LRR | Legally Responsible Relative |
| LTSR | Long-Term Structured Residence |
| MA | Medical Assistance |
| MDT | Multi-Disciplinary Team |
| MH | Mental Health |
| MHA | Mental Health Association |
| MR | Mental Retardation |
| NAMI | National Alliance for the Mentally Ill |
| NIAAA | National Institute on Alcoholism and Alcohol Abuse |
| NIDA | National Institute on Drug Abuse |
| NIMH | National Institute of Mental Health |
| OMHSAS | Office of Mental Health and Substance Abuse Services |
| OMR | Office of Mental Retardation |
| OVR | Office of Vocational Rehabilitation |
| PH | Partial Hospitalization |
| PIN | Parent Involved Network |
| PP&A | Pennsylvania Protection and Advocacy, Inc. |
| PPODS | Pocono Parents of Downs Syndrome |
| PSIC | Pennsylvania Services Integration Consortium |
| RC | Resource Coordination |
| RTF | Residential Treatment Facility (MH) |
| SAP | Student Assistance Program |
| SR | Social Rehabilitation |
| SS | Social Security |
| SSI | Supplemental Security Income |
| WHC | White Haven State Center |
