Deductible, coinsurance and copay: follow the money
Understand three different forms of health plan cost sharing and learn which questions to ask when a service uses a separate rule.
Deductible, copayment, and coinsurance are three different ways a health plan divides the cost of covered care between you and the insurer. The numbers can look simple in a plan summary, but the order in which they apply changes what you owe. A $30 copay may apply to a primary-care visit before the deductible, while lab work from the same appointment may be billed separately and subject to the deductible. A hospital service may use coinsurance after you have met it.
The plan’s Summary of Benefits and Coverage (SBC) is a useful starting point, but the contract and insurer’s current benefit information control. Services, networks, and drug benefits can use different rules. Confirm how a specific service is treated before relying on an estimate.
Deductible: the threshold for certain benefits
A deductible is the amount you pay for covered services subject to the deductible before the plan begins sharing those costs. If your individual deductible is $2,000, you generally pay the allowed amounts for covered services subject to that deductible until your qualifying spending reaches $2,000. The plan may still cover some services before you reach it, and a plan may have more than one deductible.
Check whether the plan has:
- An overall medical deductible or separate deductibles for certain benefits.
- A separate prescription drug deductible.
- Services covered before the deductible, such as some office visits or generic medicines.
- An individual deductible inside a family plan, as well as a family deductible.
- Different deductibles for in-network and out-of-network care.
Do not assume that every dollar paid to a provider counts toward the deductible. Premiums do not count. Non-covered services and out-of-network charges may be treated differently. The insurer’s explanation of benefits (EOB) and plan document show how a particular claim was applied.
Copayment: a set amount for a service
A copayment, or copay, is a fixed dollar amount you pay for a covered service, such as a primary-care visit or a prescription. Copays can differ for specialists, urgent care, emergency services, imaging, and each prescription tier. Some copays apply even before the deductible; others apply after you meet it. The SBC should say when the deductible applies.
Ask whether a copay covers the entire visit or only one part of it. For example, a doctor visit may have a copay while blood tests, pathology, or imaging ordered during the appointment generate separate claims. A hospital visit can involve facility and professional charges. The same provider might bill separately for a procedure and the visit where it was discussed.
Coinsurance: a percentage of the allowed amount
Coinsurance is the percentage of a covered service’s allowed amount that you pay, usually after meeting the deductible. If the plan’s allowed amount is $500 and your coinsurance is 20%, your share is $100 and the plan’s share is $400, assuming the service is covered and the deductible condition has been met.
If you have not met the deductible and the service is subject to it, you may owe the full allowed amount instead of only the coinsurance. This is why a percentage in a plan table does not always tell you what the next appointment will cost. It must be read with the deductible rule and the plan’s allowed amount.
The allowed amount is the maximum amount the plan recognizes for a covered service. In-network providers generally agree to the plan’s contracted rates. If an out-of-network provider charges more than the allowed amount, the difference may become a balance bill unless a legal protection applies. HealthCare.gov’s coinsurance glossary provides worked examples, and its allowed-amount definition explains the negotiated-rate concept.
How they work together: an example
Suppose a hypothetical plan has a $1,500 deductible and 20% in-network coinsurance for a covered outpatient procedure. The plan’s allowed amount is $4,000, and you have not paid anything toward your deductible this year.
- You pay the first $1,500 of the allowed amount to satisfy the deductible.
- The remaining allowed amount is $4,000 − $1,500 = $2,500.
- Your 20% coinsurance on that remaining amount is $500.
- Your total cost sharing for this service is $1,500 + $500 = $2,000.
If you had already met the deductible, your coinsurance on the same allowed amount might be 20% of $4,000, or $800, unless another limit or benefit rule changes the result. If your plan instead lists a $250 copay for that exact service, the copay may apply in place of coinsurance, but the plan’s terms determine whether it is due before or after the deductible. These examples simplify real claims: the provider may use service codes, multiple claims, separate facility fees, and plan-specific rules.
HealthCare.gov’s deductible glossary notes that some plans cover certain services before the deductible and that separate deductibles may apply. Its copayment glossary explains that copays can vary by service and may depend on whether the deductible has been met.
The out-of-pocket maximum is a separate limit
For covered services that count toward the plan’s in-network out-of-pocket maximum, deductibles, copays, and coinsurance may accumulate toward a yearly cap. After you reach the plan’s limit for qualifying covered care, the plan generally pays 100% of covered benefits for the rest of the plan year. The cap does not include premiums, non-covered services, and many out-of-network or above-allowed-amount costs. HealthCare.gov’s out-of-pocket maximum glossary lists these exclusions.
For plan year 2026, Marketplace plans cannot set an out-of-pocket maximum above $10,600 for an individual or $21,200 for a family. A plan may use a lower limit. This federal ceiling does not turn every medical bill into covered cost sharing and does not promise that every charge counts toward the limit. The plan’s benefit documents explain what is included.
Read the benefit row as a sequence
When you compare a service, read the plan row in this order:
- Is the service covered? Check exclusions, medical-necessity criteria, and any referral or prior-authorization rule.
- Does the deductible apply? If yes, find the remaining deductible and determine which one (medical, drug, individual, or family) applies.
- What is the cost share after the deductible? Identify the copay or coinsurance and whether it applies to a facility, professional, or both.
- What amount is used? For an in-network provider, ask for the negotiated estimate or allowed amount. A provider’s billed charge may not be the figure used to calculate in-network cost sharing.
- Does it count toward the out-of-pocket maximum? Confirm which payments accumulate and whether separate medical and prescription limits exist.
Keep the answer in writing or save the insurer’s estimate with the date, plan name, provider, and service. A phone estimate is not a guarantee of payment, but it can help resolve a later disagreement about what you were told.
Questions to ask before a service
Use your member ID to ask the insurer:
- Is this exact service covered at this location and by this provider?
- Does the deductible apply, and how much remains?
- Is the listed copay for the whole service or just the office visit?
- What coinsurance percentage applies, and to which allowed amount?
- Are facility, physician, anesthesia, lab, or imaging charges billed separately?
- Is prior authorization required, and who submits it?
- Will the amount count toward the individual or family out-of-pocket maximum?
After care, compare the EOB with the provider bill. The EOB explains what the insurer processed, the allowed amount, the plan payment, and your assigned share. It is not always an invoice. If the provider’s bill does not match the EOB, ask the provider to pause collection activity while the claim is reviewed, and contact the insurer using the number on your card.
This guide explains common terms, not the cost of a particular claim. HealthCare.gov says its glossary is educational and may differ from a specific policy; the plan document governs. For an estimate, use the insurer’s current benefit information and the provider’s exact service details.
