OEP
Abbreviation with 2 meanings
| Stands for | Open enrollment period |
|---|---|
| Meanings | 2 |
| Categories | Medical |
OEP has two meanings. It stands for Open enrollment period (health insurance) or Medicare Advantage Open Enrollment Period (health insurance).
Meanings of OEP at a glance
| # | OEP stands for | Context |
|---|---|---|
| 1 | Open enrollment period | Medical › Health Insurance |
| 2 | Medicare Advantage Open Enrollment Period | Medical › Health Insurance |
1. Open enrollment period
Medical · Health Insurance Abbreviations · also used in government
Annual window during which people can enroll in, change or drop health coverage without a qualifying life event, used by ACA marketplaces and employer plans. Marketplace open enrollment has traditionally opened November 1, and employers set their own dates, usually in the fall.
Example: OEP ends soon: pick a plan by the deadline for coverage starting January 1.
Missing open enrollment usually means waiting a year unless a special enrollment event occurs. Some state-run marketplaces extend their deadlines. For Medicare, the fall window is formally the Annual Enrollment Period (AEP), while OEP can refer to a separate Medicare Advantage window.
2. Medicare Advantage Open Enrollment Period
Medical · Health Insurance Abbreviations
Medicare window from January 1 through March 31 each year when people already enrolled in a Medicare Advantage plan can make one switch to another Medicare Advantage plan or return to Original Medicare and join a Part D drug plan. It cannot be used to move from Original Medicare into Medicare Advantage.
Example: During the MA OEP she left her Advantage plan and returned to Original Medicare with a Part D plan.
Often written MA OEP to distinguish it from general open enrollment. New Medicare Advantage enrollees have a similar change window in their first three months. Returning to Original Medicare does not guarantee acceptance into a Medigap policy without health questions in most states.
Related abbreviations
More health insurance abbreviations
- MSP – Medicare Savings Program
- NCCI – National Correct Coding Initiative
- NCD – National coverage determination
- NCQA – National Committee for Quality Assurance
- NPI – National Provider Identifier
- NSA – No Surprises Act
- OON – Out-of-network
- OOP – Out-of-pocket
- OPPS – Outpatient Prospective Payment System
- PACE – Program of All-Inclusive Care for the Elderly
- Par – Participating (provider)
- PDP – Prescription drug plan (Medicare Part D)
See all 107 health insurance abbreviations →
This entry is for general education and is not medical advice. Abbreviation use varies between institutions; always confirm in context.