Learn What Acronyms Mean

It can be hard to keep track of all the acronyms you need to know about your health coverage.

We've compiled a list of the most important ones so you can quickly look up anything you don't know as you make the most of your health insurance plan.

If you need definitions of important terms, visit our Glossary.

ACA
(Patient Protection and) Affordable Care Act
ACO
Accountable Care Organization
AD&D
Accidental Death and Dismemberment
ADA
American with Disabilities Act of 1990
ALOS
Average Length of Stay
AMA
American Medical Association
APTC
Advanced Premium Tax Credit
ASC
Ambulatory Surgery Center
Auth
Authorization
BOI
Bureau of Insurance
CDHP
Consumer-Directed Health Plan
CHAMPUS
Civilian Hospital and Medical Program of the Uniformed Service. Now known as Tricare.
CHIP
Children's Health Insurance Program
CIN
Clinically Integrated Network
CMS
Centers for Medicare and Medicaid Services (previously HCFA)
COB
Coordination of Benefits
COBRA
Consolidated Omnibus Reconciliation Act (extension of coverage)
COI
Certificate of Insurance
CPT
Current Procedural Terminology (Level 1 codes)
DMAS
Department of Medical Assistance Services
DME
Durable Medical Equipment
DOL
Department of Labor
DOS
Date of Service
E & L
Exclusions and Limitations
EAP
Employee Assistance Program
EMT
Emergency Medical Technician
ENT
Ears, Nose and Throat
EOB
Explanation of Benefits
EOC
Evidence of Coverage (HMO / POS Plan Documentation)
ER
Emergency Room
ERISA
Employee Retirement Income Security Act
FAMIS
Family Access to Medical Insurance Security Plan
FDA
Food and Drug Administration
FEHBP
Federal Employee Health Benefit Plan
FFS
Fee for Service
FMLA
Family and Medical Leave Act
FSA
Flexible Spending Account
HDHP
High-Deductible Health Plan
HEDIS®
Health Plan Employer Data and Information Set
HIPAA
Health Insurance Portability and Accountability Act
HMO
Health Maintenance Organization
HRA
Health Reimbursement Account
HSA
Health Savings Account
ICU
Intensive Care Unit
IRF
Inpatient Reading Fee
IUD
Intrauterine Device
IV
Intravenous
JCAHO
Joint Commission on the Accreditation of Hospital Organizations
LOS
Length of Stay
LPN
Licensed Practical Nurse
LTD
Long Term Disability
Max
Maximum
MD
Medical Doctor
MOOP
Maximum Out of Pocket
MRI
Magnetic Resonance Imaging
NAIC
National Association of Insurance Commissioners
NCQA
National Committee for Quality Assurance
NIMH
National Institute of Mental Health
Non-par
Not participating (out-of-network)
NPI
National Provider Identifier
OB
Obstetrician
OOA
Out of Area
OOP
Out of Pocket
OSHA
Occupational Safety and Health Act
OTC
Over the Counter
OV
Office Visit
P&T
Pharmacy & Therapeutics Committee
Par
Participating
PCMH
Patient Centered Medical Home
PCP
Primary Care Physician
PHA
Personal Health Assessment
PHI
Protected Health Information
POA
Power of Attorney
POS
Point of Service
PPACA
Patient Protection and Affordable Care Act
PPO
Preferred Provider Organization
Pre-auth
Pre-Authorization
Pre-X
Pre-existing Conditions
PSA
Prostate Screening Antigen
PT
Physical Therapy
QHP
Qualified Health Plan
Remit
Remittance
Retro
Retroactive
RN
Registered Nurse
ROI
Release of Information
RX
Prescription
SBC
Uniform Summary of Benefits and Coverage
SF
Self-Funded
SNF
Skilled Nursing Facility
ST
Speech Therapy
STD
Short-Term Disability
TEFRA
Tax Equity and Fiscal Responsibility Act of 1982
TPA
Third-Party Administrator
TRICARE
Managed Healthcare System for military families
UCC
Urgent Care Center
URI
Upper Respiratory Infection
VA Hospital
Veterans Administration Hospital
WC
Worker's Compensation
WH
Withhold
WIC
Women, Infants and Children (supplemental food program)
YTD
Year to Date

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