Health insurance verification: medical plans, benefits, and networks

Verifying medical coverage specifically: plan types (HMO, PPO, HDHP, Medicare, Medicaid), the medical benefits to capture, networks, referrals, and prior authorization.

The first move in verifying medical coverage is identifying the plan type, because the type decides almost everything that follows: whether a referral is required, whether the member can be seen out of network at all, and how the patient’s cost share is calculated. Two medical plans sold by the same carrier can route referrals in opposite directions, and a plan’s name on the member card rarely tells you which rules apply. Confirm the structure first, then verify against it.

This guide is written for medical billers, patient-access staff, and revenue cycle teams who verify health (medical) coverage specifically. It assumes you already work from a standard verification routine, which the insurance verification overview covers in full, and it spends its attention on what is different about medical plans: the plan structures, the medical benefits worth capturing, the network and referral rules, and the point where prior authorization enters the picture.

What health insurance verification covers

Health insurance verification confirms that a patient’s medical plan is active on the date of service and establishes what the plan will pay for the specific service being scheduled. For medical coverage it runs across three distinct checks, and this guide keeps them separate throughout because collapsing them is where errors start:

• Eligibility asks whether the medical plan is active for this member on this date of service. The eligibility page covers the active-coverage mechanics and the X12 270/271 exchange in detail.
• Benefits ask what the plan pays for this particular service and how much the patient owes: deductible, coinsurance, copay, and the out-of-pocket maximum.
• Prior authorization asks whether the plan requires pre-service approval before the service is rendered. It is a separate determination from eligibility and benefits, and a plan can be fully active with benefits confirmed and still deny payment for a service that needed authorization.

The pillar owns the general definition of insurance verification and the eligibility-versus-benefits-versus-authorization framing. Rather than repeat it, this page concentrates on the medical-plan detail underneath: the plan structures that change how you verify, the specific medical benefits to record, and how network status, referrals, and prior authorization interact for a medical service.

Medical plan types and why they change verification

The plan type is the single fact that most changes how you verify a medical service, because it controls three things at once: whether the member needs a referral to see a specialist, whether out-of-network care is covered at all, and how the cost share is structured. Verify the type first and the rest of the check has a frame; skip it and you can capture accurate benefit numbers that still lead to a denial, because the referral or network rule was the binding constraint.

The five structures below are the common commercial forms. Treat each behavior as the typical convention and confirm it against the specific member’s plan document, because carriers vary these rules by product line and market.

HMO plans route care through a primary care physician who must be on file, and specialist visits generally need a referral from that PCP before the plan will pay. If the referral is missing at the time of service, the visit can be denied even though the member is eligible and the specialist is in network. For an HMO, confirming the PCP and the referral requirement is as important as confirming the benefit amounts.

PPO plans trade tighter gatekeeping for flexibility: the member can usually self-refer to specialists and can go out of network, but out-of-network care carries a higher deductible and coinsurance and often a separate out-of-pocket maximum. The verification job on a PPO is to capture two benefit sets, in network and out of network, and to note which one applies to the provider actually rendering the service.

EPO plans sit between the two: no referral is typically needed, but out-of-network care is generally not covered outside emergencies. That makes the rendering provider’s network status the make-or-break check for an EPO. POS plans blend HMO and PPO behavior, often requiring a referral for the richer in-network benefit while still allowing out-of-network care at a reduced level, so both the referral and the network tier need to be recorded.

HDHP plans are defined by their cost structure rather than their network. The member pays most costs out of pocket until a high deductible is met, after which coinsurance or copays begin, and the plan is frequently paired with a health savings account (HSA). Because the deductible is large and front-loaded, the most useful thing to verify on an HDHP is how much of the deductible has already been met, since that number, not the copay, tells the patient what today’s visit will actually cost.

Government and marketplace coverage

Government and exchange coverage adds plan types that follow their own verification logic:

• Medicare Advantage versus Original Medicare. A Medicare Advantage plan is run by a private carrier and behaves like a commercial managed-care plan, often with its own network, referral rules, and prior authorization requirements. Original Medicare, frequently paired with a supplement (Medigap) plan, follows federal rules and does not use the same network structure. Verify which one the member has, because the referral and authorization behavior is very different between them.
• Medicaid managed care. Many Medicaid members are enrolled in a managed care organization that administers benefits under a plan-specific network and authorization rules, rather than in fee-for-service Medicaid. Identify the managed care plan by name, not just “Medicaid,” so you verify against the entity that actually adjudicates the claim.
• Marketplace and ACA plans. Plans purchased through the health insurance marketplace are commonly issued as HMO or EPO products with narrow networks, and cost share varies by metal tier. Confirm the network carefully, because a narrow-network marketplace plan can exclude providers who participate with the same carrier’s commercial plans.

Medical benefits to capture

Once the plan type is known, the benefit check records what the patient will owe for the specific service. Capturing a partial set is a common source of surprise balances: a copay quoted without checking the deductible on an HDHP, or an in-network coinsurance quoted for a provider who turns out to be out of network. Capture the full picture below for the exact service and place of service being scheduled.

Deductible is the amount the patient pays before the plan begins to share costs, and it resets each plan year. The number that matters at the point of service is not the deductible itself but how much of it remains, so always capture the amount met alongside the total. Plans usually carry both an individual and a family deductible, and on a family plan either can be the binding one depending on what the household has already spent.

Coinsurance is the percentage the patient owes after the deductible is met, for example twenty percent of the allowed amount. It behaves differently from a copay because it scales with the cost of the service, so on an expensive procedure the coinsurance can be the largest single number the patient sees. Record the coinsurance for the specific service category, since some plans set different percentages for different service lines.

Copays are fixed dollar amounts, and the trap is that they vary by place of service. A plan can charge one copay for a primary care office visit, a higher one for a specialist, a higher one still for an emergency room visit, and a separate amount for urgent care. Verify the copay for the exact place of service being scheduled rather than quoting a single office-visit figure.

The out-of-pocket maximum caps what the patient can spend in a plan year, after which the plan pays covered services in full. Like the deductible, its value at the point of service is the amount already accrued against it. A patient near their out-of-pocket maximum may owe far less than the raw coinsurance suggests, and telling them so accurately depends on capturing the accrued figure during verification.

Do not treat any dollar figures as standard across plans. Deductibles, coinsurance percentages, copays, and out-of-pocket maximums are set per plan and reset each year, so the only reliable numbers are the ones returned for the specific member on the specific date.

Network, referrals, and prior authorization

Three plan mechanics sit outside the benefit dollar amounts and can override them: network status, referrals, and prior authorization. Each is a separate check, and each can turn an otherwise clean verification into a denial or a balance the patient did not expect.

Network status. A participating (in-network) provider has a contract with the plan and accepts its allowed amounts, so the patient pays the in-network cost share. A non-participating (out-of-network) provider has no such contract; depending on the plan type, the service may be covered at a higher cost share (PPO, POS) or not covered at all outside emergencies (HMO, EPO). Verify the network status of the specific rendering provider for the specific plan, because a provider can participate with one of a carrier’s products and not another.

Tiered networks. Many medical plans layer a tiered network on top of the in-network group, placing preferred providers in a lower-cost tier and other in-network providers in a higher-cost tier. In a tiered plan, confirming that a provider is “in network” is not enough; you also need the tier, because the patient’s cost share changes with it.

Referrals. On HMO and many POS plans, a specialist visit requires a referral from the member’s primary care physician, and the plan can deny the visit if the referral is not in place at the time of service. Treat the referral as a distinct item to confirm during verification, separate from eligibility and separate from prior authorization.

Prior authorization. Medical services frequently require pre-service approval, particularly advanced imaging, surgery, specialty drugs, and higher levels of care. Prior authorization is not the same as verifying benefits: a plan can confirm the service is a covered benefit and still deny payment because the required authorization was never obtained. When verification flags that a service needs authorization, that determination hands off to a separate workflow. Silna’s prior authorization guide covers how to obtain and track it. The practical rule is to ask, for every medical service, both whether it needs a referral and whether it needs prior authorization, and to record each answer explicitly.

Verifying a service that may require pre-service approval? Pair this check with Silna’s complete guide to prior authorization so the referral and authorization are settled before the visit.

Health versus dental and other lines

Health (medical) coverage and dental coverage are separate lines of business, usually on separate plans, and often administered by different carriers even when they share a brand. The verification workflows are not interchangeable. Dental plans are built around annual maximums, class-based coverage (preventive, basic, major), waiting periods, and frequency limitations, none of which map cleanly onto the deductible, coinsurance, and out-of-pocket-maximum structure of a medical plan. Verifying one tells you nothing reliable about the other.

Because of that, this guide covers medical coverage only. For verifying dental benefits, including annual maximums, coverage classes, and frequency limits, see the dedicated dental insurance verification guide. Vision coverage is likewise typically a separate plan with its own benefit structure, most often built around a periodic allowance for exams, frames, and lenses rather than a deductible and coinsurance. When a patient presents multiple cards, verify each line against its own rules rather than assuming the medical result carries over.

How Silna reduces denials

Most avoidable medical denials trace to failures that are detectable before the patient is seen: an expired or wrong plan, a specialist visit without the HMO referral on file, an out-of-network provider on an EPO, or a service that needed prior authorization no one requested. Each of these is knowable at verification, and each is a place where a manual check quietly misses a step under time pressure.

Silna Health’s Care Readiness Platform automates the medical verification workflow end to end: eligibility confirmation, plan-type identification, full benefit capture, network and referral checks, and the hand-off to prior authorization where a service requires it. By catching the missing referral, the out-of-network provider, and the unmet authorization before the visit rather than after the denial, Silna cuts pre-visit administrative work by 95%, per Silna Health, 2026.

Silna’s strongest adoption is among ABA therapy, physical therapy, and mental health practices, plus care management for older adults, the practice types where medical benefit complexity and prior authorization volume run highest and where an accurate front-end verification protects both the patient conversation and the eventual claim. For teams verifying across commercial, Medicare Advantage, and Medicaid managed care lines, Silna coordinates the full check so the plan type, benefits, network, and authorization are all settled before the visit. See how it applies to your payer mix at silnahealth.com.

Key terms

Deductible

The amount a patient pays before the medical plan begins to share costs; resets each plan year and exists at both individual and family levels.

Coinsurance

The percentage of the allowed amount a patient owes after the deductible is met; it scales with the cost of the service.

Copay

A fixed dollar amount owed for a service, frequently different by place of service (office, specialist, emergency room, urgent care).

Out-of-pocket maximum

The cap on what a patient pays in a plan year; once reached, the plan pays covered services in full.

In-network (participating) provider

A provider under contract with the plan who accepts its allowed amounts, so the patient pays the lower in-network cost share.

Referral

Authorization from a primary care physician to see a specialist, typically required on HMO and many POS plans.

HDHP and HSA

A high deductible health plan pairs a large front-loaded deductible with, commonly, a health savings account the member uses to pay costs before the deductible is met.

X12 270/271

The standard electronic transaction pair for eligibility: the 270 sends the inquiry and the 271 returns the plan’s response.

Frequently Asked Questions

This article is general educational information, not medical or insurance advice. Coverage rules, plan structures, and cost share vary by plan and state, so consult a licensed healthcare professional or your plan administrator about your specific situation.

About the author

Jeffrey Morelli

Jeffrey Morelli is the Co-Founder and CEO of Silna Health, the first Care Readiness Platform built to remove the administrative barriers that delay care. Silna automates benefit checks, eligibility, and prior authorizations across 1,000+ payors, and is backed by $27M from Accel and Bain Capital Ventures. Before Silna, Jeff spent a decade in San Francisco building and scaling products for highly regulated industries, including leading go-to-market at Truework (Series C, acquired by Checkr).

Last reviewed: September 3, 2026.