Acronyms
AAJ Administrative Appeals Judge
AFGE American Federation of Government Employees
AG Attorney General
AIMS Administrative Instruction Manual System
ALC Agency Location Code
ALJ Administrative Law Judge
ALS Amyotrophic Lateral Sclerosis
AM Administrative Message
APP Annual Performance Plan
APR Annual Performance Report
AWIC Area Work Incentives Coordinator
BL  Black Lung
BPAO Benefit Planning, Assistance, and Outreach
BUCS Bounty Update Control System
BVS Bureau of Vital Statistics
CDC Centers for Disease Control (HHS)
CDR Continuing Disability Review
CE Consultative Examination
CFO Chief Financial Officer
CFR Code of Federal Regulations
CIO Chief Information Officer
CMS Centers for Medicare & Medicaid Services (HHS)
COLA Cost of Living Adjustment
COSS Commissioner of Social Security
CPI Consumer Price Index
CR Continuing Resolution
CSRS Civil Service Retirement System
CY Calendar Year
DA&A Drug Addiction and Alcoholism
DAB Departmental Appeals Board (HHS)
DCComm Deputy Commissioner for Communications
DCDISP Deputy Commissioner for Disability and Income Security Programs
DCF Disability Control File
DCFAM Deputy Commissioner for Finance, Assessment, and Management
DCHR Deputy Commissioner for Human Resources
DCO Deputy Commissioner for Operations
DCS Deputy Commissioner for Systems
DCOSS Deputy Commissioner of Social Security
DI Disability Insurance 
DIB Data Integrity Board
DOB Date of Birth
DOD Department of Defense
DOJ Department of Justice
DOL Department of Labor
DOT Department of Transportation
EEO Equal Employment Opportunity
EEOC Equal Employment Opportunity Commission
EIN Employer Identification Number
EITC Earned Income Tax Credit
EM Emergency Message
EN Employment Network
ES Executive Staff
ESR Employment Support Representative
EVS Employee Verification Services
FAS Financial Accounting System
FEHBP Federal Employees Health Benefit Plan
FERS Federal Employees’ Retirement System
FMAX Family Maximum
FNS Food and Nutrition Service (USDA)
FO Field Office
FRA Full Retirement Age
FTE Fulltime Equivalent
FY Fiscal Year
GAO General Accounting Office
GC General Counsel
GPO Government Pension Offset
GRH Graham-Rudman-Hollings amendment 
GS  General Schedule
GSA Government Services Administration
HCFA Health Care Financing Administration
HHS Department of Health and Human Services
HI Hospital Insurance
IAA Interagency Agreement
IDMS Integrated Disability Management System
IFPTE International Federation of Professional and Technical Engineers
IFR Interim Final Rule
IG Inspector General
IIHI Individually Identifiable Health Information
INS Immigration and Naturalization Service
I&R Income and Resources
IRC Internal Revenue Code
IRCS Incarceration Report Control System
IRD Interim Review Draft
IRS Internal Revenue Service
ITAB Information Technology Advisory Board
IVT Interactive Video Training
LAE Limitation on Administrative Expenses
LAPR Lawfully Admitted for Permanent Residence
MBR Master Beneficiary Record
MCS Modernized Claims Systems
MEF Master Earnings File
MER Medical Evidence of Record
MOE Month of Election
MOU Memorandum of Understanding
MSSICS Modernized Supplemental Security Income Claims System
NAPAS National Association of Protection and Advocacy Systems
NPRM Notice of Proposed Rulemaking
NTEU National Treasury Employees Union
OAG Office of Acquisitions and Grants (DCFAM)
OACT  Office of the Chief Actuary
OASI Old-Age and Survivor’s Insurance
OASDI Old-Age, Survivors’ and Disability Insurance
OB Office of Budget (DCFAM)
OCSE Office of Child Support Enforcement (HHS)
ODD Office of Disability Determinations (DCDISP)
ODP Office of Disability Programs (DCDISP)
OFin Office of Finance (DCFAM)
OFPO Office of Financial Policy and Operations (DCFAM)
OGC Office of General Counsel
OMB Office of Management and Budget
O/P Overpayment
OpB Operations Bulletin
OPLM Office of Publications and Logistics Management (DCFAM)
OPM Office of Personnel Management
OT Overtime
P&A Protection and Advocacy
PAR Performance and Accountability Report
PASS Plan for Achieving Self-Support
PC Program Circular
PCCDR Personal Computer Continuing Disability Review
PEBES Personal Earnings and Benefit Estimate Statement
PIA Primary Insurance Amount
PL Public Law
PMRS Performance Management and Recognition System
POS Postentitlement Online System
POW  Prisoner of War
PRO Peer Review Organization
PSC Program Service Center
PUPS Prisoner Update Processing System
RC Regional Commissioner
RCO Report Clearance Officer
RCT Report Clearance Team
RIB Retirement Insurance Benefits
RIF Reduction In Force
RMA Referral and Monitoring Agency
RO Regional Office
RP Representative Payee
RRB Railroad Retirement Board
SBA Small Business Administration
SEI Self-Employment Income
SGA Substantial Gainful Activity
SMI Supplemental Medical Insurance
SOC Sub Object Classification
SSA Social Security Administration
SSAB Social Security Advisory Board
SSI Supplemental Security Income
SSN Social Security Number
SSR Supplemental Security Record
SVB Special Veterans’ Benefits
TANF Temporary Assistance for Needy Families
TIN Taxpayer Identification Number
TN Transmittal Notice
TSC Teleservice Center
TSP Thrift Savings Plan
TT Teletype
U/P Underpayment
USC United States Code
USDA Department of Agriculture
VA Department of Veterans’ Affairs
VR Vocational Rehabilitation
WC Workers’ Compensation
WEP Windfall Elimination Provision