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Medicare Glossary > Medicare Acronyms & Abbreviations

Medicare Glossary

Medicare Acronyms & Abbreviations

Please visit our Medicare Glossary for a listing of Medicare terms and definitions.

A | B | C | D | E | F | G | H | I | J | L | M | N | O | P | Q | R | S | T | U  | V | W | Y

A

  • A Assigned (claim)
  • AA Anesthesia Assistant
  • AARP American Association of Retired Persons
  • ABN Advance Beneficiary Notice
  • ACE Aetna Claim Exchange (EMC software)
  • ADA American Dental Association
  • AECHO Aetna Electronic Claim Home Office (EMC software)
  • ALJ Administrative Law Judge
  • AMA American Medical Association
  • ANSI American National Standards Institute
  • ARU Audio Response Unit
  • ASA American Society of Anesthesiologists
  • ASC Ambulatory Surgery Center
  • AWP Average Wholesale Price
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    B

  • BAC Beneficiary Advisory Committee
  • BENE Medicare Beneficiary
  • BI Benefit Integrity Department
  • BPO Bureau of Program Operations (HCFA)
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    C

  • CAC Contractor Advisory Committee
  • CCI Correct Coding Initiative
  • CCN Claim Control Number
  • CF Conversion Factor
  • CFR Code of Federal Regulations
  • CIM Coverage Issues Manual
  • CLCCP Comprehensive Limiting Charge Compliance Program
  • CLIA Clinical Lab Improvement Act
  • CMD Carrier Medical Director
  • CMHC Community Mental Health Center
  • CMN Certificate of Medical Necessity
  • CMR Comprehensive Medical Review
  • CNM Certified Nurse Midwife
  • CNS Clinical Nurse Specialist
  • CO Central Office (HCFA, in Baltimore, MD)
  • COB Coordination of Benefits
  • COBRA Consolidation Omnibus Budget Reconciliation Act of 1986
  • CP Clinical Psychologist
  • CPO Care Plan Oversight
  • CPR Customary, Prevailing, and Reasonable
  • CPT (CPT4) Current Procedural Terminology, 4th edition (© AMA)
  • CPT Claims Processing Timeliness
  • CRD Chronic Renal Disease
  • CRNA Certified Registered Nurse Anesthetist
  • CS Customer Service Department
  • CSW Clinical Social Worker
  • CWF Common Working File
  • CY Calendar Year
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    D

  • DDS Doctor of Dental Surgery
  • DEDUCT Deductible
  • DEFRA Deficit Reduction Act
  • DHHS Department of Health and Human Services
  • DMD Doctor of Medical Dentistry
  • DME Durable Medical Equipment
  • DMEPOS Durable Medical Equipment, Prosthetics, Orthotics and Supplies
  • DMERC Durable Medical Equipment Regional Carrier
  • DO Doctor of Osteopathy
  • DOB Date of Birth
  • DOR Date of Receipt
  • DOS Date of Service
  • DPM Doctor of Podiatric Medicine
  • DRG Diagnosis Related Group
  • DX Diagnosis
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    E

  • E & M Evaluation and Management Procedure Codes
  • ECG Electrocardiogram
  • ECS Electronic Claims Services
  • EDI Electronic Data Interchange
  • EFT Electronic Funds Transfer
  • EGHP Employer Group Health Plans
  • EI Economic Index
  • EIN Employer Identification Number
  • EKG Electrocardiogram
  • EMC Electronic Media Claim
  • EOB Explanation of Benefits
  • EOMB Explanation of Medicare Benefits
  • ESRD End Stage Renal Disease
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    F

  • FDA Food and Drug Administration
  • FI Fiscal Intermediaries
  • FOI Freedom of Information
  • FOIA Freedom of Information Act
  • FRC Federal Records Center
  • FSY Fee Screen Year
  • FTB First Time Beneficiary (MSP)
  • FY Fiscal Year (Medicare operates on a fiscal year of October 1 to September 30)
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    G

  • GEHA Government Employees Hospital Association
  • GPCI Geographic Practice Cost Index
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    H

  • HBP Hospital Based Physician
  • HCFA Health Care Financing Administration
  • HCFA-1500 Health Insurance Claim Form
  • HCFA-192 Medicare Supplier Number Application Form
  • HCPCS HCFA Common Procedure Coding System
  • HHA Home Health Agency
  • HHS Health and Human Services
  • HICN Health Insurance Claim Number
  • HIMR Health Insurance Master Record
  • HME Home Medical Equipment
  • HMO Health Maintenance Organization
  • HO Hearing Officer
  • HPSA Health Professional Shortage Area
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    I

  • ICD-9-CM International Classification of Diseases, Clinical Modification, 9th Revision
  • ICN Internal Control Number (Medicare’s claim number)
  • ICU Intensive Care Unit
  • IDTF Independent Diagnostic Testing Facility
  • IIC Inflation Index Charge - Customary
  • IIP Inflation Index Charge - Prevailing
  • IL Independent Lab
  • IPL Independent Physiology Lab
  • IRS Internal Revenue Service
  • IV Intravenous
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    J

  • J Codes Level 2 HCPCS codes for injectables/drugs
  • JCAHO Joint Commission Accreditation of Healthcare Organizations
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    L

  • LCER Limiting Charge Exception Report
  • LCL Lowest Charge Level
  • LGHP Large Group Health Plan
  • LFS Lab Fee Schedule
  • LLP Limited License Practitioner
  • LPN Licensed Practical Nurse
  • LVN Licensed Vocational Nurse
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    M

  • MAAC Maximum Allowable Actual Charge
  • MAC Monitored Anesthesia Care
  • MCM Medicare Carrier's Manual
  • MD Doctor of Medicine
  • MD Medical Director
  • MEDPARD Medicare Participating Physician/Supplier Directory
  • MEI Medicare Economic Index
  • MFAIC Medicare Fraud and Abuse Information Coordinator
  • MFS Medicare Fee Schedule
  • MFSDB Medicare Fee Schedule Data Base
  • MIA Medicare Inpatient Adjudication
  • MOA Medicare Outpatient Adjudication
  • MPFSDB Medicare Physician’s Fee Schedule Data Base
  • MR Medical Review
  • MSA Medicare Savings Account
  • MSA Metropolitan Statistical Area
  • MSN Medicare Summary Notice
  • MSP Medicare Secondary Payer
  • MTD Month-to-Date
  • MVPS Medicare Volume Performance Standard
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    N

  • NA Non-assigned (claim)
  • NDC National Drug Code
  • NF Nursing Facility
  • NH Nursing Home
  • NM Nurse Midwife
  • NOBA Notice of Budget Authority
  • NOC Not Otherwise Classified
  • NON-MSA Non-Metropolitan Statistical Area
  • NON-PAR Non-Participating Provider
  • NOS Number of Service(s)
  • NP Nurse Practitioner
  • NSC National Supplier Clearinghouse
  • NSF National Standard Format
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    O

  • O/EE Individual Owner/Managing Employee
  • OBRA Omnibus Budget Reconciliation Act
  • OCR Optical Claim Recognition
  • OD Optometrist (Doctor of Optometry)
  • OI Office of Investigations
  • OIFO Office of Investigations Field Office
  • OIG Office of the Inspector General
  • OP Ordering Physician
  • OT Occupational Therapist
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    P

  • PA Prior Authorization
  • PA Physician Assistant
  • PAR Participating in the Medicare Program
  • PC Professional Component
  • PDT Purchased Diagnostic Test
  • PEN Parenteral and Enteral Nutrition
  • PHS Public Health Service
  • PIN Provider Identification Number
  • POL Physician Office Lab
  • POS Place of Service
  • PPO Preferred Provider Organization
  • PPR Physician Payment Reform
  • PPRC Physician Payment Review Commission
  • PPS Prospective Payment System
  • PR Professional Relations Department
  • PRO Peer Review Organization
  • PSYCH Psychiatric Services
  • PT Physical Therapy
  • PT Patient
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    Q

  • QAP Quality Assurance Program
  • QC Quality Control
  • QMB Qualified Medicare Beneficiary
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    R

  • R/C Reasonable Charge
  • RA Remittance Advice
  • RBRVS Resource Based Relative Value System
  • RC Reason Code
  • REMIT Remittance Advice
  • REP PAYEE Representative Payee
  • RHC Rural Health Clinic
  • RHHIs Regional Home Health Intermediaries
  • RN Registered Nurse
  • RO Regional Office (HCFA)
  • RPT Registered Physical Therapist
  • RRB Railroad Retirement Benefits
  • RVS Relative Value Scale
  • RVU Relative Value Unit
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    S

  • S & I Supervision and Interpretation
  • SIIS Supplemental Insurance Interface System (crossover claims)
  • SLMB Specified Lower Income Medicare Beneficiary
  • SMI Supplemental Medical Insurance
  • SNF Skilled Nursing Facility
  • SOI Statement of Intent
  • SOS Site of Service
  • SPEC Provider Specialty
  • SSA Social Security Administration
  • SSN Social Security Number
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    T

  • TAT Turn-around-time
  • TC Technical Component of a Diagnostic Test
  • 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
  • TPA Third Party Administrator
  • TPP Third Party Payer
  • TS Technical Support Department
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    U

  • UPIN Unique Provider Identification Number
  • UR Utilization Review
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    V

  • VA Veterans’ Administration
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    W

  • WC Workers Compensation Employer Identification Number (EIN). Also referred to as a Tax ID Number.
  • Back to Index

    Y

    • YTD Year-to-date

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