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

Managed care controls cost and quality by integrating financing and delivery of care. Instead of simply reimbursing claims, managed-care plans contract with networks of providers, emphasize preventive care, and steer members toward cost-effective treatment. The exam tests the structural differences among HMOs, PPOs, POS plans, and consumer-directed HSA/HDHP arrangements.

Health Maintenance Organization (HMO)

The HMO is the most restrictive and the most prevention-focused model.

• Prepaid care: Members pay a fixed periodic premium for comprehensive services rather than per-service fees.
• Primary care physician (PCP) gatekeeper: Members select a PCP who coordinates care and issues referrals to specialists.
• Network only: Generally no out-of-network coverage except emergencies.
• Preventive emphasis: Routine and wellness care is covered to keep members healthy and reduce costly claims.

Exam Tip: The HMO's defining trio is gatekeeper PCP, mandatory referrals, and in-network-only care.

PPO and POS Plans

The Preferred Provider Organization (PPO) offers the most flexibility: no gatekeeper, no referrals, and out-of-network care is covered but at a higher coinsurance. The Point-of-Service (POS) plan is a hybrid — it uses an HMO-style gatekeeper for in-network care but lets members go out of network (like a PPO) at higher cost. Think of POS as "HMO in, PPO out."

Provider Reimbursement: Capitation vs. Fee-for-Service

HMOs commonly pay providers by capitation — a fixed per-member-per-month amount regardless of services used — which transfers utilization risk to the provider. PPOs typically pay discounted fee-for-service to contracted (preferred) providers.

Exclusive Provider Organization (EPO)

An EPO sits between an HMO and a PPO: like a PPO it usually drops the referral requirement, but like an HMO it covers in-network care only (no out-of-network benefits except emergencies). EPOs trade flexibility for lower premiums. Knowing the four-way comparison — HMO, EPO, PPO, POS — lets you answer most managed-care structure questions on the exam by checking two variables: is there a gatekeeper, and is out-of-network care covered.

Consumer-Directed Plans: HSA with HDHP

A Health Savings Account (HSA) is a tax-advantaged account paired with a qualifying High-Deductible Health Plan (HDHP). The HDHP's high deductible lowers premiums; the HSA lets the member save pre-tax dollars to pay the deductible and other qualified medical expenses.

2025 HSA/HDHP Numbers (IRS, exam-tested ranges)

• Triple tax advantage: Contributions are pre-tax/deductible, growth is tax-deferred, and qualified withdrawals are tax-free.
• Portability: The HSA belongs to the individual and rolls over year to year (no "use it or lose it").
• Catch-up: An additional $1,000 for accountholders age 55+.
• Eligibility trap: A person enrolled in Medicare or claimed as a dependent cannot contribute to an HSA.

Compare: An FSA (Flexible Spending Account) is employer-owned, has lower limits, and is generally use-it-or-lose-it — unlike the portable HSA.

Related Consumer-Directed Accounts

The exam contrasts the HSA with two employer-funded accounts. An HRA (Health Reimbursement Arrangement) is funded solely by the employer to reimburse qualified expenses; it is not portable and unused amounts may or may not carry over at the employer's option. An FSA (Flexible Spending Account) is funded by employee pre-tax salary reductions and is generally use-it-or-lose-it (with a limited carryover or grace period). Only the HSA is individually owned and fully portable.

Why Managed Care and CDHPs Control Cost

Managed care lowers cost by negotiating provider discounts, requiring authorizations, and emphasizing prevention.

Consumer-directed plans add a behavioral lever: because the member spends their own HSA dollars below the deductible, they have an incentive to shop for value. The pairing of a low-premium HDHP with a tax-advantaged HSA is the dominant cost-sharing model on the modern exam, so memorize the eligibility rules and the triple tax advantage.

Distinguishing the Managed-Care Models

The exam wants crisp distinctions among the managed-care designs, and the cleanest sorting axis is network restriction versus flexibility and cost. An HMO is the most restrictive and lowest-cost: care is delivered through a network, members select a primary care physician who acts as a gatekeeper for specialist referrals, and out-of-network care is generally not covered except emergencies, with copays rather than coinsurance. A PPO is more flexible: members may see any provider, pay less in-network and more out-of-network, and need no referral.

A POS plan blends the two — an HMO-style gatekeeper for the lowest cost, with an option to go out of network at higher cost.

The HDHP-plus-HSA pairing dominates modern questions. A qualified high-deductible health plan carries a high deductible and lower premium, and it is the only design that lets the insured fund a health savings account, whose triple tax advantage is the recurring test point: contributions are tax-deductible, growth is tax-deferred, and qualified medical withdrawals are tax-free.

Exam Trap: Only a qualified HDHP makes a person HSA-eligible, and the account holder must not have disqualifying coverage such as a general-purpose FSA. Memorize the eligibility rules and the triple tax advantage.