HMO vs. PPO vs. EPO vs. POS vs. HDHP

Benefits Concepts / Health Plan Operations
Health Plan Design

HMO vs. PPO vs. EPO vs. POS vs. HDHP

These labels answer different questions. HMO, PPO, EPO, and POS generally describe network and care-access structures. HDHP describes a deductible and out-of-pocket design that may support HSA eligibility when all federal requirements are met.

Reviewed July 29, 2026 · Source-led practitioner reference

Comparison at a glance

Plan label Network pattern Referral pattern Out-of-network care
HMO Contracted network, often coordinated through primary care Often required for specialists Generally not covered except emergencies
PPO Preferred network with negotiated pricing Often not required Usually available at higher member cost
EPO Exclusive network Plan-specific Generally not covered except emergencies
POS Network incentives with primary-care coordination Generally required for specialists May be available at higher cost
HDHP Not a network category by itself Depends on the underlying plan Depends on the underlying plan

Do not treat HDHP as another network type

A high deductible health plan can use an HMO, PPO, EPO, or another network arrangement. For HSA purposes, it must satisfy the applicable minimum deductible, maximum out-of-pocket, and permitted-coverage rules. “High deductible” in marketing language does not by itself prove HSA eligibility.

What to compare during selection

  • Provider and facility participation—not only the carrier logo.
  • Primary-care and referral requirements.
  • In-network and out-of-network deductibles and maximums.
  • Prescription formulary, specialty pharmacy, and prior authorization.
  • Emergency and surprise-billing protections.
  • Employer contribution, payroll deductions, and account funding.
Practitioner rule: Compare the actual SBC, provider directory, formulary, and plan document. A familiar plan label is an orientation tool, not a complete description of coverage.

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Primary sources

Educational reference only. Plan documents, governing law, agency guidance, and plan-specific professional advice control.

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