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U S Department of Health and Human Services Improving the health, safety and well-being of America
Centers for Medicare & Medicaid Services

Acronym List

This list explains acronyms found on the cms.hhs.gov web site and other acronyms that are commonly used. This list is not a legal document.

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

AcronymTermAudiences
M&M Medicare & Medicaid General, Health Care
M+C Medicare + Choice Health Care, Medicare Beneficiary
M+C NSF Medicare + Choice National Standard Format General, Health Care
M+CO Medicare + Choice Organization General, Health Care
MA Major Action General
MA Medicaid Agency General, Health Care
MA Medical Assistance General, Health Care
MA Medicare Advantage (formerly Medicare+Choice) General, Medicare Beneficiary
MA BSF Medicare Advantage Benefit Stabilization Fund IT Organization
MA-PD Medicare Advantage Prescription Drug Plans General, Medicare Beneficiary
MAA Medical Assistance Agency General, Health Care
MAA Memorandum of Advance Agreement General, Health Care
MAABD Medical Assistance to Aged, Blind & Disabled General, Health Care
MAAC Maximum Allowable Actual Charge General, Health Care
MAAR Mandatory Annual Audit Requirement General
MAC Major Ambulatory Category General, Health Care
MAC Maximum Allowable Cost (or Charge) General, Health Care
MAC MEDICARE ADMINISTRATIVE CONTRACTOR General
MAC Medicare Appeals Council General, Medicare Beneficiary
MACE Medicare Alternate Claim Entry System General, Health Care
MADC Major Ambulatory Diagnostic Categories General, Health Care
MADCAP Manual Adjustments Credits & Awards Program (MBR) General
MADRS Medicare Automated Data Retrieval System General, Health Care
MADS Mass Adjusted System General
MADS Medicare Actuarial Data System General, Health Care
MAF Medical Assistance Facility General, Health Care
MAFDUDE MBR Master File Duplication Detection Operation General
MAFDUP Abbreviated MBR File in MAFDUDE Operation General
MAH Most Accessible Hospital General, Health Care
MAISARC Major Automated Information Systems Acquisition Review Committee General
MAN Medicare Automated Network General, Health Care
MANRLINE Menu-driven Access to 100% Near-Line Claims Files System (NCH) General
MANRLITE Access to MANERLINE General
MAO Medical Assistance Only General, Health Care
MAO Medicare Advantage Organization General, IT Organization
MAP Manufacturing Automated Protocol General
MAP Maturity Actions Program (MBR) General
MAP Medical Assistance Payments General, Health Care
MAP Medical Assistance Program General, Health Care
MAPC Maximum Allowable Prevailing Charge General, Health Care
MAPD Medicare Advantage Prescription Drug General
MAPSA Medicare A Provider Services Assistants General, Health Care
MARI Medicare Administrative Reform Initiatives General, Health Care
MARK Mechanized Assignment & Record Keeping (System) General
MARS Management & Administrative Reporting System General
MARS Management Administration Reporting Subsystem General
MARS Medicare Accounts Receivable System General, Health Care
MARX Medicare Advantage and Prescription Drug System IT Organization
MAS (GSA) Multiple Award System General
MAS Medicare Appeals System IT Organization
MAT Master Account Title General
MAU Memorandum of Advance Understanding General
MAU Multistation Access Unit General
MAX Medicaid Analytic Extract General, Medicare Beneficiary
MB Market Basket General
MBA Monthly Benefit Amount (SSA) General, Health Care
MBAS Medicare Benefit Accounting System General, Health Care
MBCIS Medicare Compliance Issues System General, Health Care
MBCS Medicare Budget & Cost System General, Health Care
MBCSP Medicare Beneficiary Customer Service Program General, Health Care
MBD Medicaid Beneficiary Database General, Medicare Beneficiary
MBD Medicare Beneficiary Database General, Health Care
MBDA Minority Business Development Agency General
MBE Medicaid Budget & Expenditures General, Health Care
MBES Medicaid Budget & Expenditures System General, Health Care
MBHCW (Medicare or Medicaid) Home & Community Based Services Waivers System General, Health Care
MBI Minimum Background Investigation General
MBN Medicare Benefit Notice Health Care, Medicare Beneficiary
MBO Management by Objectives General
MBPRP Monthly Bill & Payment Records Processing System General
MBR Master Beneficiary Record (SSA) General
MBSCAN Maximum Direct Record Scans (searches) General
MBSPAS State Plan Amendments System General
MC Maintenance Contractor General
MCA Management Control Area General
MCA Maternity Center Association General, Health Care
MCAB Medicare Contractor Administrative Budget General, Health Care
MCAC Medical Coverage Advisory Committee General, Health Care
MCBFMR BESS Focused Medical Review General, Health Care
MCBS Medicare Current Beneficiary Survey General, Health Care
MCCA Medicare Catastrophic Coverage Act of 1988 (PL 100360) General, Health Care
MCCB Medicare Change Control Board General, Health Care
MCCOY Managed Care Online Information System (GHP) General, Health Care
MCCRA Medicare Catastrophic Coverage Repeal Act of 1989 (PL 101234) General, Health Care
MCD Medicare Coverage Database General
MCD Medicare Coverage Documents General
MCDATA MedicareMedicaid Common Data Initiative General, Health Care
MCDC Medicare Contractor Data Center General, Health Care
MCE Medicare Code Editor General, Health Care
MCE(S) Medical Care Evaluation (Studies) General, Health Care
MCF Master Control File General
MCH Maternal & Child Health Services General, Health Care
MCI Medicare Claims Inquiry General, Health Care
MCIGLAS Medicare Contractor Integrated General Ledger Accounting System General, Health Care
MCM Medicare Carrier Manual General, Health Care
MCO Managed Care Operation General, Health Care
MCO Managed Care Organization Health Care, Medicare Beneficiary
MCOB Medicare Contractor Oversight Board General, Health Care
MCP Management Control Plan General
MCP Monthly Capitation Payment General
MCPI Medical Care Component of the Consumer Price Index General, Health Care
MCPI Medicare Contractor Productivity Improvement General, Health Care
MCPS Medicare (Part A) Claims Processing System (Veritus) General, Health Care
MCR Management Control Review General
MCS Mandatory Claim Submission System General, Health Care
MCS MultiCarrier System General
MCSC Medicare Customer Service Center General, Health Care
MCSID Medicare Contractor Systems Information Database General, Health Care
MCSS Medicare Contractor Standard System General, Health Care
MCSSMR Medicare Contractor Standard Systems Medical Review General, Health Care
MCWRS Medicare Contractor Workload Reporting (System) General, Health Care
MCWS Medicare Contractor Workload System General, Health Care
MD Medical Director General, Health Care
MDAS Medicaid Override Application System General, Health Care
MDC Major Diagnosis Category General
MDC Medicare Data Center General, Health Care
MDCN Medicare Data Communications Network General, Health Care
MDH Medicare Dependent Hospital General, Health Care
MDRI Medicaid Drug Rebate Initiative General, Health Care
MDS Medicare Decision Support General, Health Care
MDS Minimum Data Set General, IT Organization
MDS Mortality Data System General, Health Care
MDSRH Medicare Dependent Small Rural Hospital General, Health Care
MDSS Medicare Decision Support System General, Health Care
MDTA Manpower Development & Training Act General
MDW Modernized Development Worksheet General
ME Medical Effectiveness General, Health Care
ME Medical Endurance General, Health Care
MEASURES Medicare/Medicaid Automated Survey Reporting System General, Health Care
MECA Medicare Expanded Choice Act of 1987 General, Health Care
MECCA Medicare Catastrophic Coverage Act of 1988 (also MCCA) General, Health Care
MECT Multiple Electroconvulsive Therapy General, Health Care
MED Medicare Enrollment Data (System) General, Health Care
MED Medicare Exclusion Database General, Health Care
MED-ED Medical Education General, Health Care
MEDAL Medicare/Medicaid Eligibility Data Linkage General, Health Care
MEDB Manage the EDB System General, Health Care
MEDB Medicare Part B General, Health Care
MEDIBAPS Medicare Budget Allocation Process System General, Health Care
MEDICAID Medical Aid (State administered health insurance program) General, Health Care
MEDIGAP Medicare Gap (Medicare complementary insurance program) General, Health Care
MEDIRS Medicaid Eligibility Determination & Information Retrieval System General, Health Care
MEDMRG Medicaid Merge Program (HDMEDMRG) General, Health Care
MEDPAC Medicare Payment Advisory Commission General, Health Care
MEDPAR Medicare Provider Analysis & Review General, Health Care
MEDPARD Medicare Participating Physician/Supplier Directory General, Health Care
MEDSTAT Medicaid Statistical Information (Reporting) System (now MSIS) General, Health Care
MEDTEP Medical Treatment Effectiveness Program General, Health Care
MEF Master Earnings File (SSA) General, Health Care
MEI Medical Economic Index General, Health Care
MEI Medicare Economic Index General, Health Care
MEQC Medicaid Eligibility Quality Control (System) General, Health Care
MES Medicare Entitlement System General, Health Care
MET Medicaid Eligibility Terminal General, Health Care
MEWA Medicare & Multiple Employer Welfare Associations General, Health Care
MEWA Multiple Employer Welfare Arrangement General
MFAIC Medicare Fraud & Abuse Information Coordinator General, Health Care
MFCU Medicaid Fraud Control Unit General, Health Care
MFIS Medicare Fraud Information Specialist General, Health Care
MFS Medicare Fee Schedule General, Health Care
MFSDB Medicare Fee Schedule Database General, Health Care
MFSR Medicare Focused Medical Review Status Report General, Health Care
MGA Medicaid Grant Awards General, Health Care
MGCRB Medical Geographical Classification Review Board General, Health Care
MGCRB Medicare Geographic Classification Review Board Contractor, General, Health Care
MHB Maximum Hospital Benefit General, Health Care
MHCRS Maintain HCRIS Process General
MHOS Medicare Health Outcomes Survey General, Health Care
MHS Medical History Sample General, Health Care
MI Manual Issuance General, Health Care
MI Medical Insurance (Part B or SMI) Health Care, Medicare Beneficiary
MIA Mark Interface Application General
MIB Medical Information Bureau General, Health Care
MIB Medical Insurance Bureau General, Health Care
MICH Maternal, Infant & Child Health General, Health Care
MICO Midwestern Consortium (Chicago & Kansas City HIROs) General, Health Care
MIDES (Intermediary) Medicare Internal Data Entry System General, Health Care
MIG Medicare Insured Group General, Health Care
MIH Maternal & Infant Health Initiative General, Health Care
MIIR Management Information Integrated Repository IT Organization
MIM Medicare Intermediary Manual General, Health Care
MIMS Medicare Information Management System General, Health Care
MIP Medicare Integrity Program General, Health Care
MIR Medicare Information Request General, Health Care
MIRPS Miscellaneous Information Reference PostEntitlement System (SSA MBR) General, Health Care
MIS Major Information Systems General
MIS Management Information System General, IT Organization
MIS Manual Issuance System General
MISCOR Miscellaneous MBR Correction Operation General
MISF Management Information System Facility General
MLS MultiLevel Security General, IT Organization
MLT Multiple Logical Tasking General
MM Media Management General
MM Month or Minutes (i.e., mmddyyyy) General
MMA Medicare Modernization Act (of 1999) General, Health Care
MMACS Medicare/Medicaid Automated Certification System General, Health Care
MMAP (AARP) Medicare/Medicaid Assistance Program Health Care, Medicare Beneficiary
MMCITS Medicaid Managed Care Information Tracking System General, Health Care
MMCQI Medicare Managed Care Quality Improvement General, Health Care
MMCS Medicare Managed Care System General, Health Care
MMDDCCYY Month-Month/Day-Day/Century-Century/Year-Year (i.e., 02/26/2001) (also MMDDYYYY) Health Care, Medicare Beneficiary
MMDDYY MonthMonth/DayDay/YearYear Health Care, Medicare Beneficiary
MMIS Medicaid Management Information System General, Health Care
MMORP Medicare Management & Open Review Program General, Health Care
MMP Mixed Model Plan (GPP/IPP combination) General, Health Care
MMPS Medicare Mortality Predictor System General, Health Care
MMR Monthly Membership Report IT Organization
MMS (U.S.) Minerals Management Service General
MMS Manpower Management System General
MMS Metropolitan Medicare System General
MMWR Morbidity & Mortality Weekly Report General, Health Care
MN Medical Necessity General, Health Care
MN Medically Needy General, Health Care
MNIL Medically Needy Income Levels General, Health Care
MO Management Office General
MO Multiply Occurring General
MOC Management Oversight Council General
MODEM ModulatorDemodulator General, IT Organization
MOE Method of Evaluation General
MOL Maximum Order Limitation General
MOLI Mirtel OnLine Inquiry System (HCFA access to RRB Database) General, Health Care
MOPD Maintenance Operations Protocol Loader Daemon General
MOR Medicaid Overpayment Report General, Health Care
MOSS Mandatory Offsite Storage System General
MOU Memorandum of Understanding General
MOUT Maximum Output General
MP Master Processor General
MPA Master Pending Accretion General
MPARTS Mistaken Payment Recovery Tracking System General, Health Care
MPC Medical Patterns of Care General, Health Care
MPCC Medicare Premium Collection Center General, Health Care
MPCS Medicare Premium Collection System General, Health Care
MPD Medicare Provider Database General, Health Care
MPDB Medicare Prescription Drug Beneficiaries General, Health Care
MPF Master Provider File General, Health Care
MPFS Medicare Physician Fee Schedule General, Health Care
MPFSDB Medicare Physician Fee Schedule Data Base General, Health Care
MPI Medicare Provider Inventory General, Health Care
MPIER Medicare Physician Identification & Eligibility Registry (or Record) General, Health Care
MPIES Medicare Physician Identification & Eligibility System General, Health Care
MPLS Multiprotocol Label Switching IT Organization
MPP Massive Parallel Processing General
MPR (carrier) Master Procedure Record General, Health Care
MPR Mathematical Policy Research General, IT Organization
MPRS Medical Policy Retrieval System General, Health Care
MPS Market Penetration Survey General, Health Care
MQA Medicare Quality Assurance (CWF data validation) General, Health Care
MQAG Medicare Quality Advisory Group General, Health Care
MQC Medicaid Quality Control General, Health Care
MQFE Medicare Qualified Federal Employment IT Organization
MQGE Medicare Qualified Government Employee General, Health Care
MQIS Medicare Quality Indicator System General, Health Care
MQM Medicare Quality Monitor General, Health Care
MQSA Mammography Quality Standards Act of 1992 General, Health Care
MR Management Review General
MR Master Record General
MR Medical Review General, Health Care
MR Mortality Ratio General, Health Care
MR/DD Mentally Retarded / Developmentally Disabled General, Health Care
MR/UR Medical Review / Utilization Review General, Health Care
MRA Minimum Retirement Age General, Health Care
MRAR Medical Review Annual Report General, Health Care
MRB Medical Review Board General, Health Care
MRCRA Medicare Regulatory & Contractor Reform Act of 2001 General, Health Care
MRI Medical Records Institute Health Care
MRO Multiple Region Option General
MRO MultiRegion Operation General
MRP Material Requirements Planning General
MRP Maximum Reimbursement Point General
MRRS Medicaid Retrospective Reimbursement System General, Health Care
MRS-1 Medical Review System Version 1 (aka: Part B Medical Review Savings Reporting System) General, Health Care
MRT Medical Review Team General, Health Care
MRTAG Mortality Review Technical Advisory Group General, Health Care
MS/R MultiState/Regional (Contractor) General
MSA Major Service Area General
MSA Medical Savings Accounts Health Care, Medicare Beneficiary
MSA Medical Statistical Area General, Health Care
MSA Medicare Savings Account General, Medicare Beneficiary
MSA Metropolitan Statistical Area (for PPS) General
MSA Monthly Statement of Accounts General
MSAT Medicaid Strategic Analysis Team General, Health Care
MSC Medicare Status Code General, Health Care
MSC Message Switching Centers (SSA ARS/SSADARS) General, Health Care
MSHIP Medicare Supplemental Health Insurance Programs General, Health Care
MSIS Medicaid Statistical Information System General, Medicare Beneficiary
MSIS Medicaid Statistical Information System (formerly MedStat) General, Health Care
MSN Medicare Summary Notice Health Care, Medicare Beneficiary
MSOM Modernized Systems Operations Manual (SSA) General, Health Care
MSP Manager Software Products General, IT Organization
MSP Medicare Secondary Payor Health Care, Medicare Beneficiary
MSP Message Security Protocol General, IT Organization
MSPFQA Medicare Secondary Payer Functional Quality Assurance (Steering Committee) General, Health Care
MSPLS Medicare Secondary Payer Litigation Support General, Health Care
MSPPAY Medicare Secondary Payor Payment Module General, Health Care
MSPQA Medicare Secondary Payer Quality Assurance General, Health Care
MSR MidSession Review General
MSS Medical Social Sevices General, Health Care
MSS Medicare Statistical System General, Health Care
MSSC Medicare Systems / State & County (Reimbursement) General, Health Care
MTAG Medicare Technical Advisory Group General, Health Care
MTD Month to Date General
MTEA Medical Treatment Effectiveness Agenda General, Health Care
MTI Medicare Telephone Inquiry General, Health Care
MTM Methods Time Measurement General
MTMC Military Traffic Management Command General
MTMP Medication Therapy Management Program General, Medicare Beneficiary
MTOP Multiple Type of Provider General
MTS Medicare Target Scenario General, Health Care
MTSO Medical Transcription Service Organization General, Health Care
MTUS Miles/Times/Units/Service General
MUA Medically Undeserved Area General, Health Care
MUDD Maximum Direct Output General
MUDS Medicare Utilization Data System General, Health Care
MUP Master Update Processor General
MUPPET Medicare UPdate Processors for Enrollment Transactions (nee NEWDUP) General, Health Care
MUPS (HI) Maintenance Update Processing System General
MUR Minimum Utilization Rate General
MVPS Medicare Volume Performance Standard General, Health Care
MVS/ESA MVS/Enterprise System Architecture General
MWRS Medicare Workload Report System General, Health Care

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