9.3 Managed Care: HMO, PPO, POS, HSA/HDHP
Key Takeaways
- HMO: lowest cost, PCP gatekeeper, referrals required, in-network only (except ER).
- PPO: highest premium, no PCP or referrals, out-of-network covered at reduced benefit; EPO has no referrals but no out-of-network coverage.
- POS is an HMO/PPO hybrid — PCP gatekeeper with optional out-of-network care at higher cost.
- An HSA requires a qualified HDHP and offers a triple tax advantage; funds roll over and are portable.
- FSAs are employer-owned and generally use-it-or-lose-it; do not confuse them with HSAs.
What Managed Care Is
Managed care delivers and finances healthcare through provider networks and utilization controls to manage both cost and quality. Providers contract to accept negotiated (discounted) rates in exchange for patient volume. The exam tests four network models — HMO, PPO, EPO, POS — plus the consumer-directed HDHP/HSA arrangement.
The Four Network Models Compared
| Feature | HMO | PPO | EPO | POS |
|---|---|---|---|---|
| Premium | Lowest | Highest | Moderate | Moderate |
| PCP required | Yes | No | No | Yes |
| Referral to specialist | Required | Not required | Not required | Required for in-network |
| Out-of-network coverage | None (except ER) | Yes, at lower benefit | None (except ER) | Yes, at higher cost |
| Best for | Lowest cost, willing to coordinate | Maximum flexibility | No referrals but network-locked | HMO/PPO hybrid |
Memory hook: HMO = gatekeeper + in-network only. PPO = freedom + out-of-network allowed. EPO = no referrals but no out-of-network. POS = "point of service" you choose in or out each visit, with a PCP gatekeeper for in-network.
HMO — Health Maintenance Organization
The HMO is the most restrictive and least expensive model. Members select a primary care physician (PCP) who acts as a gatekeeper: the PCP coordinates all care and must issue referrals before a specialist is seen. There is generally no out-of-network coverage except emergencies, low or no deductibles, and fixed copays. HMOs emphasize preventive care to reduce expensive downstream claims.
PPO — Preferred Provider Organization
A PPO offers the most flexibility: no PCP, no referrals, and out-of-network care is covered at a reduced benefit (lower coinsurance, separate deductible). The trade-off is the highest premium.
EPO and POS
- EPO (Exclusive Provider Organization): like a PPO in that no referrals are required, but like an HMO in that out-of-network care is not covered (except emergencies).
- POS (Point of Service): a hybrid — members pick a PCP and get the best benefits in-network with referrals, but may go out-of-network at higher cost-sharing.
Consumer-Directed Health Plans: HDHP + HSA
A High-Deductible Health Plan (HDHP) pairs lower premiums with a high deductible, and qualifies the insured to fund a Health Savings Account (HSA) — a tax-advantaged account for medical expenses. To be HSA-qualified, the plan must meet the IRS minimum deductible and maximum-OOP thresholds and the insured must have no other disqualifying coverage (and not be enrolled in Medicare or claimed as a dependent).
The HSA "Triple Tax Advantage"
- Contributions are tax-deductible (or pre-tax through payroll).
- Earnings grow tax-deferred.
- Withdrawals for qualified medical expenses are tax-free.
HSA funds roll over year to year (no "use it or lose it") and are portable — they belong to the individual, not the employer. After age 65, non-medical withdrawals are taxed as income but carry no penalty (before 65, non-qualified withdrawals incur income tax plus a 20% penalty).
2025 HSA Limits
| Coverage | HSA contribution limit (2025) |
|---|---|
| Self-only | $4,300 |
| Family | $8,550 |
| Catch-up (age 55+) | Additional $1,000 |
HSA vs. FSA — Do Not Confuse
| Feature | HSA | FSA |
|---|---|---|
| Requires HDHP | Yes | No |
| Rolls over | Yes (unlimited) | Generally no (limited carryover/grace) |
| Portable | Yes | No (employer-owned) |
| Ownership | Individual | Employer |
Trap: An FSA is generally use-it-or-lose-it. If an employee funds $2,500 into a Healthcare FSA and uses only $1,800, the $700 is forfeited (subject to a limited carryover or grace period if the employer offers one). The HSA never forfeits.
A client wants no referral requirement to see specialists but is willing to accept no out-of-network coverage except emergencies, in exchange for a moderate premium. Which plan fits best?
Which feature is true of a Health Savings Account (HSA) but NOT a Healthcare FSA?
Gatekeepers, Referrals, and Network Penalties
The defining behavioral difference among models is the referral requirement. An HMO uses a primary care physician (PCP) gatekeeper who must refer to specialists, and out-of-network care is generally not covered except emergencies. A PPO has no gatekeeper and covers out-of-network care at a lower benefit level. A POS is a hybrid: PCP-coordinated like an HMO but with out-of-network access like a PPO at higher cost.
| Model | PCP/gatekeeper | Out-of-network coverage |
|---|---|---|
| HMO | Required | Emergency only |
| EPO | Not required | None (except emergency) |
| POS | Required for in-network tier | Yes, at reduced benefit |
| PPO | Not required | Yes, at reduced benefit |
Prepaid Care and the HMO Service-Area Rule
An HMO is technically a prepaid health plan: members pay a fixed premium and copays rather than satisfying a deductible/coinsurance, and the HMO both finances and delivers care within a defined service area. Move outside the service area and routine HMO coverage stops, which is why the exam ties HMO suitability to whether the member lives and works inside the network footprint.
Choosing a Model by Cost-Control Appetite
The recurring suitability question asks which model fits a given consumer, and the answer tracks the tradeoff between freedom of choice and cost. An HMO offers the lowest premium and predictable copays but the tightest network and gatekeeper, suiting a cost-sensitive member content to stay in-network. A PPO charges more for the freedom to self-refer and use out-of-network providers. A POS sits between them, and an HDHP-with-HSA suits a relatively healthy member who can absorb a high deductible in exchange for the lowest premium and a tax-advantaged savings account.
Matching member behavior to model is the skill examiners test, not memorizing acronyms alone.