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