This acronym listing is intended to assist with common terminology but is not all-inclusive.

A Assigned (Claim)
AA Anesthesia Assistant (Abbreviation for)
ABN Advanced Beneficiary Notification
ADA American Dental Association
ADA American Diabetes Association
ALJ Administrative Law Judge
AMA American Medical Association
ANSI American National Standards Institute
ASA American Society of Anesthesiologists
ASC Ambulatory Surgical Center
AWP Average Wholesale Price
BBA Balanced Budget Act (of 1997)
BBRA Balanced Budget Refinement Act (of 1999)
BCBSND Blue Cross Blue Shield of North Dakota
BENE Beneficiary
BPO Bureau of Program Operations (CMS)
CAC Carrier Advisory Committee
CAH Critical Access Hospital
CAP Competetive Acquisition Program
CCI Correct Coding Initiative
CCN Correspondence Control Number
CDE Certified Diabetic Educators
CF Conversion Factor
CHAMPUS Civilian Health Medical Program of the Uniformed Services
CLCCP Comprehensive Limiting Charge Compliance Program
CLIA Clinical Laboratory Improvements Amendments of 1988
CMD Contractor Medical Director
CMHC Community Mental Health Center
CMN Certificate of Medical Necessity
CMS Centers for Medicare & Medicaid Services
CNM Certified Nurse Midwife
CNMW Certified Nurse Midwife
CNS Clinical Nurse Specialist
CO Central Office (CMS, in Baltimore, MD)
COB Coordination of Benefits
COBRA Consolidation Omnibus Budget Reconciliation Act of 1986
CORF Comprehensive Outpatient Rehabilitation Facility
COTS Commercial-Off-The-Shelf
CP Clinical Psychologist
CPO Care Plan Oversight
CPT Current Procedural Terminology Codes
CRD Chronic Renal Disease
CRNA Certified Registered Nurse Anesthetist
CSW Clinical Social Worker
CWF Common Working File
DC Doctor of Chiropractic
DDS Doctor of Dental Surgery
DEDUCT Deductible
DEFRA Deficit Reduction Act
DHHS Department of Health and Human Services
DHS Designated Health Services
DMD Doctor of Medical Dentistry
DME Durable Medical Equipment
DMERC Durable Medical Equipment Regional Carrier
DO Doctor of Osteopathy
DOB Date of Birth
DOR Date of Receipt
DOS Date of Service
DP Doctor of Podiatry
DPM Doctor of Podiatric Medicine
DSC Doctor of Surgical Chiropody
DSP Doctor of Surgical Podiatry
DX Diagnosis
ECG Electrocardiogram
EDI Electronic Data Interchange
EFT Electronic Funds Transfer
EGHP Employer Group Health Plan
EI Economic Index
EIN Employer Identification Number
EKG Electrocardiogram
E/M Evaluation and Management (visit)
EMC Electronic Media Claim
EOB Explanation of Benefits
EOMB Explanation of Medicare Benefits
ERA Electronic Remittance Advice
ERP Education Recognition Program
ESRD End Stage Renal Disease
FDA Food and Drug Administration
FFP Federal Financial Participation
FH Fair Hearing
FISS Fiscal Intermediary Standard Systems (Part A processing system)
FMR Focused Medical Review
FOI Freedom of Information
FOIA Freedom of Information Act
FQHC Federally Qualified Health Center
FR Federal Register
FRC Federal Records Center
FY Fiscal Year (October 1 - September 30)
GEHA Government Employees Hospital Association
GPCI Geographic Practice Cost Index
HBP Hospital Based Physician
HCPCS Healthcare Common Procedure Coding System
HHA Home Health Agency
HHS Health and Human Services (CMS is a branch of)
HICN Health Insurance Claim Number
HIMR Health Insurance Master Record
HIPAA Health Insurance Portability and Accountability Act
HMO Health Maintenance Organization
HPSA Health Professional Shortage Area
ICD-9-CM International Classification of Disease-Clinical Modification
ICN Internal Control Number
ICU Intensive Care Unit
IDTF Independent Diagnostic Testing Facility
IIC Inflation Index Charge-Customary
IIP Inflation Index Charge-Prevailing
IL Independent Laboratory
IOM Internet Only Manual
IP Independent Psychologist
IPL Independent Physiological Laboratory
IRS Internal Revenue Service
IVR Interactive Voice Response
LCD Local Coverage Determination
LCER Limiting Charge Exception Report
LFS Laboratory Fee Schedule
LLP Limited License Practitioner
LMRP Local Medical Review Policy
LPN Licensed Practical Nurse
LVN Licensed Vocational Nurse
MCS Multi Carrier System
MD Medical Doctor
MEDPARD Medicare Participating Physician/Supplier Directory
MEI Medicare Economic Index
MFAIC Medicare Fraud and Abuse Information Coordinator
MIA Medicare Inpatient Adjudication
MOA Medicare Outpatient Adjudication
MPFSDB Medicare Physician Fee Schedule Data Base
MR Medical Review
MSA (Medicare) Medical Savings Account
MSN Medicare Summary Notice
MSO Management Service Organization
MSP Medicare Secondary Payer
MTS Medicare Transaction System
MVPS Medicare Volume Performance Standard
NA Non-assigned (Claim)
NDAB National Diabetes Advisory Board
NDC National Drug Code
NH Nursing Home
NMW Nurse Midwife
NOBA Notice of Budget Authority
NON-PAR Non-participating Provider
NOOH Notice of an Opportunity for a Hearing
NOS Number of Service
NP Nurse Practitioner
NPI National Provider Identifier
NPRM Notice of Public Rule Making
NSF National Standard Format
NTIS National Technical Information Service
OBRA Omnibus Budget Reconciliation Act
OCR Optical Character Recognition
OD Doctor of Optometry
OIG Office of Inspector General
OT Occupational Therapist
PA Physician Assistant
PAR Participating Physician
PAYERID Payer Identification (Number)
PC Professional Component
PDT Purchased Diagnostic Test
PHC Public Health Clinic
PHSA Public Health Service Act
PIN Provider Identification Number
POCI Provider Ownership Compensation Interest
POL Physicians Office Lab
POS Place of Service
POS Point of Service Option (for an HMO)
PPO Preferred Provider Organization
PPR Physician Payment Reform
PPV Pneumococcal Pneumonia Vaccine
PRO Peer Review Organization
PSO Provider Sponsored Organization
PSYCH Psychiatric Services
PT Patient
PT Physical Therapist
QAP Quality Assurance Program
QC Quality Control
QI Qualifying Individuals (Medicaid)
QIO Quality Improvement Organization
QMB Qualified Medicare Beneficiary (Medicaid)
RBRVU Resource Based Relative Value Unit
RA Remittance Advice
RC Reasonable Charge
REMIT Remittance Advice
REP PAYEE Representative Payee
RFB Religious Fraternal Benefit Society Plan
RHC Rural Health Clinic
RHHI Regional Home Health Care Intermediary
RN Registered Nurse
RO Regional Office (CMS)
RPCH Rural Primary Care Hospital (now Critical Access Hospital)
RPT Registered Physical Therapist
RVU Relative Value Unit
SIIS Supplemental Insurance Interface System (crossover claim)
SLMB Specified Lower Income Medicare Beneficiary (Medicaid)
SNF Skilled Nursing Facility
SOS Site of Service
SPEC (Provider) Specialty
SSA Social Security Administration
SSN Social Security Number
TAN Treatment Authorization Number
TAT Turn-around-time
TC Technical Component
TCU Transitional Care Unit
TEFRA Tax Equity and Fiscal Responsibility Act of 1983
TIN Taxpayer Identification Number
TMJ Temporomandibular Joint Dysfunction
TOS Type of Service
UPIN Unique Provider Identification Number
UR Utilization Review
VA Veterans Administration
WC Workers Compensation