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

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

Managed care controls cost and quality by integrating financing and delivery of care, steering members to contracted providers, and emphasizing prevention. The exam tests the structural differences among the major models and the consumer-directed (HSA/HDHP) approach.

Health Maintenance Organization (HMO)

An HMO provides comprehensive care for a fixed prepaid premium and emphasizes preventive care. Its defining features:

• Primary Care Physician (PCP) / gatekeeper — members select a PCP who coordinates care and issues referrals to specialists.
• Limited provider network — care must generally come from in-network providers; out-of-network care is not covered except in emergencies.
• Copayments, little or no deductible, and a defined service area.
• Capitation — the HMO pays contracted physicians a fixed per-member-per-month amount regardless of services used, shifting utilization risk to providers.

HMO trap: the lack of out-of-network benefits and the gatekeeper requirement are the most-tested limitations.

PPO and POS Plans

Preferred Provider Organization (PPO) contracts with a network that offers discounted (negotiated) fees. Members may use out-of-network providers but pay more (higher deductible/coinsurance). PPOs do not require a PCP or referrals — the trade-off is greater flexibility at higher cost.

Point-of-Service (POS) is a hybrid: it uses a PCP/gatekeeper like an HMO for in-network care but allows out-of-network care like a PPO at a higher cost. The member chooses the level of coverage "at the point of service."

Consumer-Directed: HSA paired with HDHP

A Health Savings Account (HSA) is a tax-advantaged account that must be paired with a qualified High-Deductible Health Plan (HDHP). The goal is to give consumers a financial stake in spending decisions, encouraging them to weigh the cost of routine care while preserving catastrophic protection.

The HDHP has a higher minimum deductible and an out-of-pocket maximum set annually by the IRS (always verify current IRS figures, which adjust each year). Before the deductible is met, the member generally pays the full negotiated cost of non-preventive care; ACA preventive services are still covered first-dollar.

The HSA Triple Tax Advantage

The HSA is unusually favorable in the tax code:

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

Unused balances roll over year to year and the account is portable — it is owned by the individual, not the employer, and travels between jobs and into retirement.

HSA Eligibility Traps and Penalties

Several conditions disqualify a person from contributing to an HSA, and these are heavily tested:

• The individual cannot have other first-dollar (non-HDHP) coverage, such as a spouse's traditional plan or a general-purpose FSA.
• The individual cannot be enrolled in Medicare (a common retirement-planning trap).
• The individual cannot be claimed as a dependent on another taxpayer's return.

A $1,000 catch-up contribution is allowed beginning at age 55. Non-qualified withdrawals before age 65 are taxed as ordinary income plus a 20% penalty; at age 65 and older the 20% penalty disappears, though income tax still applies to non-medical withdrawals.

Comparing Account Types

Distinguish the HSA from two related accounts the exam pairs it with:

The key contrasts: only the HSA is individually owned and portable, only the HSA requires an HDHP, and the FSA is the one subject to the classic use-it-or-lose-it forfeiture rule (with limited carryover or grace-period options).

Open Access and Specialty Variations

Not every managed-care plan fits the textbook mold. An open-access HMO drops the referral requirement, letting members see network specialists directly while still limiting coverage to the network. Gatekeeper HMOs retain the PCP referral step.

Within HMOs the exam also distinguishes delivery models by how physicians are organized:

• Staff model — physicians are salaried employees in HMO-owned facilities.
• Group model — the HMO contracts with one multispecialty group.
• Network model — the HMO contracts with multiple groups.
• IPA (Independent Practice Association) model — the HMO contracts with independent physicians who keep their own offices and also see non-HMO patients.

Recognizing these labels prevents confusion when a stem describes how the physicians are organized rather than how members access care.

Gatekeeper, Referrals, and the Out-of-Network Penalty

The defining HMO feature is the primary care physician (PCP) gatekeeper: the insured must obtain a referral before seeing a specialist, and care outside the network is generally not covered except for emergencies. A PPO drops the gatekeeper and covers out-of-network care at a lower benefit level; a POS plan is a hybrid — it uses a PCP gatekeeper like an HMO but allows out-of-network care at reduced benefits like a PPO. The exam asks candidates to place a fact pattern into the right model based on whether a referral is required and how out-of-network care is treated.

Capitation vs. Fee-for-Service

HMOs typically pay providers by capitation — a fixed monthly amount per member regardless of services used — which shifts utilization risk to the provider and incentivizes prevention. PPOs typically pay discounted fee-for-service. Recognizing capitation as the HMO payment model is a recurring exam point.