Reference Guide

Healthcare terms, translated into plain English.

Healthcare is notorious for confusing jargon. Here is a clear glossary of every acronym and rule you'll encounter during coverage decisions.

Healthcare Term

COBRA

Consolidated Omnibus Budget Reconciliation Act. A federal law requiring group health plans of employers with 20+ workers to offer temporary continuation of coverage when job-based benefits end.

Healthcare Term

Premium

The fixed amount you pay each month for your health insurance policy, whether you visit the doctor or not.

Healthcare Term

Deductible

The amount you must pay out-of-pocket for covered medical services before your health insurance begins paying its share.

Healthcare Term

Coinsurance

Your share of the costs of a covered healthcare service, calculated as a percentage (e.g., 20%) after meeting your deductible.

Healthcare Term

Copayment (Copay)

A fixed dollar amount (e.g., $25) you pay for a covered medical service at the time of care.

Healthcare Term

Out-of-Pocket Maximum

The absolute maximum amount you have to pay for covered services in a plan year. Once reached, the insurer pays 100% of covered benefits.

Healthcare Term

Special Enrollment Period (SEP)

A 60-day window outside the standard Open Enrollment period when you are allowed to enroll in Marketplace health coverage due to a qualifying life event (like losing job-based insurance).

Healthcare Term

Premium Tax Credit (Subsidy)

A refundable federal tax credit that helps eligible moderate- and low-income individuals and families pay for health insurance purchased through the ACA Marketplace.

Healthcare Term

HMO (Health Maintenance Organization)

A plan type that usually limits coverage to care from doctors who work for or contract with the HMO. Out-of-network care is generally not covered except in emergencies.

Healthcare Term

PPO (Preferred Provider Organization)

A plan type that contracts with medical providers. You pay less if you use providers that belong to the network, but you can use outside doctors without a referral for an additional cost.

Healthcare Term

EPO (Exclusive Provider Organization)

A managed care plan where services are covered only if you use doctors and hospitals in the plan's network (except in emergencies), but usually without needing specialist referrals.

Healthcare Term

Qualifying Life Event (QLE)

A change in your life situation — like losing job-based coverage, getting married, having a baby, or moving — that qualifies you for a Special Enrollment Period.

Healthcare Term

Formulary

A list of prescription medications covered by a health insurance plan, organized into different tiers with varying copay and coinsurance amounts.

Healthcare Term

In-Network vs. Out-of-Network

In-network providers have contracted with your insurance plan to provide services at pre-negotiated discount rates. Out-of-network doctors have no agreement, leading to higher bills.

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