Rowan Health Systems Science (HSS) 1 Practice Test 2026 - Free HSS Practice Questions and Study Guide

The essential idea is that health insurance pools risk across many people and uses a third-party payer to cover a broad range of predictable, routine medical costs. This means the insurer helps pay for regular care (like checkups and common treatments) rather than you paying the full price each time. Because a third party is involved, coverage rules, prior authorizations, and network restrictions can influence what care is approved and where it’s received. You also share costs through premiums, deductibles, and copays. This combination—risk pooling, third-party payment, and payer-driven coverage decisions—sets health insurance apart from paying entirely out-of-pocket, focusing only on catastrophic events, or having no cost-sharing.