9.3 Managed Care: HMO, PPO, POS, and HSA/HDHP

Managed care controls cost and quality by integrating the financing and delivery of care through provider networks, utilization review, and emphasis on preventive services. The exam tests the structural differences among the four main delivery models.

Comparison of Managed Care Plans

HMO Essentials

An HMO emphasizes preventive care and operates on prepaid basis. Members choose a primary care physician (PCP) who acts as a gatekeeper, controlling access to specialists through referrals. Care is generally covered only within the network, except for emergencies. Providers are often paid by capitation — a fixed amount per member per month regardless of services used.

PPO Essentials

A PPO is a network of providers who agree to discounted fee-for-service rates. Members may self-refer to specialists and may go out of network at a higher cost (lower coinsurance, separate deductible). No gatekeeper is required.

POS Essentials

A point-of-service (POS) plan is a hybrid: it uses a PCP gatekeeper like an HMO but allows out-of-network care like a PPO, with the member deciding at the point of service which option to use.

EPO and Indemnity for Contrast

An Exclusive Provider Organization (EPO) resembles a PPO network but pays no benefits out of network (except emergencies) and usually does not require a gatekeeper. A traditional indemnity (fee-for-service) plan imposes no network at all — the insured may see any provider, pays the bill, and is reimbursed per the policy schedule, typically subject to a deductible and coinsurance. Indemnity plans offer the most freedom but the least cost control, which is why managed care has largely displaced them.

The Gatekeeper Concept

The gatekeeper PCP is central to HMO and POS cost control. By requiring a referral before a member can see a specialist, the plan steers care toward lower-cost primary settings and discourages unnecessary specialist visits. A PPO has no gatekeeper, which is why members pay more in premium for the added freedom.

HSA and the High-Deductible Health Plan (HDHP)

A Health Savings Account (HSA) is a tax-advantaged account that must be paired with a qualifying High-Deductible Health Plan (HDHP). The HDHP carries higher deductibles and lower premiums; the HSA lets the insured save pre-tax dollars to pay qualified medical expenses.

2025 HSA/HDHP Limits (know the structure, not just numbers)

HSA Tax Triple Advantage

• Contributions are tax-deductible (or pre-tax through payroll).
• Earnings grow tax-deferred.
• Withdrawals for qualified medical expenses are tax-free.

Trap: Non-qualified withdrawals before age 65 are taxed as income plus a 20% penalty. After age 65, non-medical withdrawals are taxed as income but carry no penalty (similar to a traditional IRA).

To open an HSA, the individual must be covered by an HDHP, have no other disqualifying first-dollar coverage, and not be enrolled in Medicare. Unused HSA balances roll over year to year and are owned by the individual, making the account fully portable when the person changes jobs or insurers.

This contrasts with a Flexible Spending Account (FSA), which is employer-owned and generally use-it-or-lose-it at year end, and with an HRA, which the employer funds and controls.

Because the HDHP shifts more first-dollar cost to the insured, it pairs naturally with the HSA so the member can self-fund the higher deductible with tax-favored dollars while still gaining the catastrophic protection of the plan's out-of-pocket maximum.

FSA and HRA Contrasts, and Choosing a Plan Model

To complete the consumer-directed picture, contrast the HSA with the other two spending accounts the exam pairs against it:

The HSA is the only one the employee owns and can take to a new job, and the only one requiring an HDHP. A retiree enrolling in Medicare must stop HSA contributions, though they may still spend the existing balance — a frequently tested limit.

Matching the model to the member

A cost-sensitive member willing to use a gatekeeper and stay in network fits an HMO (lowest premium, capitation-driven). A member who values provider freedom and will pay more fits a PPO (no gatekeeper, out-of-network allowed). A member who wants HMO economy most of the time but occasional out-of-network access fits a POS. A healthy member who can self-fund routine costs and wants to bank tax-favored savings fits an HDHP + HSA. The exam often gives a member profile and asks which model fits — anchor on the gatekeeper, network, and cost-sharing clues in the stem.