| Plan types that require referrals | HMO and some EPO plans (CMS.gov, Health Plan Types Overview) |
| ACA metal tiers by actuarial value | Bronze ~60%, Silver ~70%, Gold ~80%, Platinum ~90% (Healthcare.gov, Plan Categories) |
| Individual out-of-pocket maximum (ACA plans) | $9,450 for 2024 plan year (CMS.gov, 2024 ACA Benefit Parameters) |
| Prior authorization denial appeal right | Yes — required for most ACA-compliant plans (CMS.gov, Surprise Billing and Prior Auth Rules) |
| CSR eligibility income range | 100%–250% of Federal Poverty Level (Healthcare.gov, Cost-Sharing Reductions) |
Why Cost Terms Matter Before You Enroll
Choosing a health plan without understanding its cost structure is like signing a lease without reading the terms — you'll pay whatever the document says, whether or not it's what you expected. The specific combination of premium, deductible, coinsurance, and out-of-pocket maximum in a plan determines your actual annual spending, not just the monthly premium displayed during enrollment.
For a practical pre-visit checklist that builds on this vocabulary, see our cost-awareness checklist for doctor appointments. For a deeper dive into how the three core cost-sharing figures interact over a plan year, the deductible, copay, and out-of-pocket maximum guide is a useful companion.
| Plan types that require referrals | HMO and some EPO plans (CMS.gov, Health Plan Types Overview) |
| ACA metal tiers by actuarial value | Bronze ~60%, Silver ~70%, Gold ~80%, Platinum ~90% (Healthcare.gov, Plan Categories) |
| Individual out-of-pocket maximum (ACA plans) | $9,450 for 2024 plan year (CMS.gov, 2024 ACA Benefit Parameters) |
| Prior authorization denial appeal right | Yes — required for most ACA-compliant plans (CMS.gov, Surprise Billing and Prior Auth Rules) |
| CSR eligibility income range | 100%–250% of Federal Poverty Level (Healthcare.gov, Cost-Sharing Reductions) |
The Terms Defined: A Quick-Reference Glossary
The definitions below cover the terms most likely to affect what you actually pay — from the plan selection screen through to settling a medical bill. Familiarity with all of them will help you read a Summary of Benefits and Coverage (SBC) accurately and avoid common enrollment mistakes.
This Article Is General Information Only
The terms and explanations here describe how standard U.S. health plan structures generally work. They are not personalized insurance, financial, or medical advice. Plan designs vary by insurer, state, and employer. Always review your Summary of Benefits and Coverage (SBC) and consult a licensed insurance navigator or broker for guidance specific to your situation.
EOB vs. Bill: Don't Confuse the Two
Many patients pay bills prematurely before verifying them against their Explanation of Benefits. Compare the two documents — errors and overbilling do occur. If amounts don't match, contact your insurer before paying.
A few terms deserve extra attention during plan comparison. Actuarial Value tells you the metal tier's average coverage level but doesn't predict your individual spending — a Bronze plan could cost you more or less than a Silver, depending on your actual utilization. Tiered formularies matter most if you take ongoing medications; look up your drugs on each plan's formulary before enrolling, not after. And prior authorization requirements are easy to overlook until a claim is denied — ask your provider which services typically require it under any plan you're considering.
For a broader picture of how misconceptions about these terms inflate costs, see healthcare cost myths that quietly cost patients money. When you're ready to apply this vocabulary to concrete saving strategies, the complete guide to reducing out-of-pocket costs walks through every major lever from plan selection to bill negotiation.
This article provides general health insurance education and is not personalized insurance, financial, or medical advice. Plan terms vary. Consult a licensed insurance navigator, broker, or qualified financial professional for decisions specific to your situation.