Four levers that are not interchangeable
Four mechanisms decide how much of a medical bill you carry rather than your insurer, and each does a different job. A deductible is a fixed amount. A cost share is a percentage. An out-of-pocket maximum is a ceiling on the percentage. A benefit limit is a ceiling on what the policy will pay at all. Adjust any one of them and the premium moves; misread any one of them and the invoice arrives in a shape you were not expecting.
The confusion is not the reader's fault. The market uses at least seven words for four ideas — deductible, excess, cost share, co-insurance, co-payment, out-of-pocket maximum, benefit limit — and one insurer will sometimes use two of them interchangeably in the same document. Worse, providers do not agree on the sequence in which the levers are applied, and the sequence changes the answer.
What follows sets out each lever in the providers' own vocabulary and works through the published mechanics. It sits alongside annual benefit limits and inner limits, which covers the fourth lever in its own right, and how IPMI premiums are calculated, which covers what you get back for accepting more risk.
The definitions, in the providers' own words
Cigna publishes the clearest public statement of the first three. Its customer guide defines the deductible — "also known as excess" — as the amount of money you pay towards your medical expenses per period of cover. It defines the cost share as the percentage of every claim you will pay. And it defines the out of pocket maximum as the maximum amount you would have to pay in cost share per period of cover.
Read the third definition slowly. The out-of-pocket maximum caps the cost share. It does not cap the deductible, the excess of a bill over a benefit limit, or anything the policy simply does not cover. It is a ceiling on one lever, not on your total exposure.
Allianz Care draws the fixed-versus-percentage line in almost the same terms: a deductible is a fixed amount you pay towards medical bills before the insurer begins to contribute, and a co-payment is a percentage of medical costs. That distinction is the whole of it. A deductible is self-limiting, because once you have paid it you have paid it. A percentage is not, because it keeps taking a slice of every claim however large the claim becomes — which is why plans using co-insurance normally pair it with an out-of-pocket maximum, and why one without the other deserves a hard look.
Working an excess off: the mechanics in detail
AXA Global Healthcare publishes the most granular public account of how an excess behaves, and almost every element of it is counter-intuitive. Its handbook states that the excess is taken off the amount covered for the first claim for each person in each year; that where the treatment carries a limit, the limit is applied before the excess is taken off; that the excess applies per person; and that it may take several claims before the full excess is paid, after which no further excess is taken that year.
Take an excess of USD 1,000 per person per year as an illustration.
| Claim | Eligible cost | What happens | Excess still to run |
|---|---|---|---|
| Out-patient consultation and diagnostics | USD 400 | Excess absorbs the whole amount; insurer pays nothing | USD 600 |
| A course of treatment carrying a USD 500 benefit limit | USD 900 | Limit applied first, reducing the covered amount to USD 500; excess then absorbs that USD 500 | USD 100 |
| In-patient admission | USD 20,000 | Remaining USD 100 of excess comes off; insurer pays USD 19,900 | Nil |
| Anything further that year | — | Paid without deduction of excess | Nil |
The second row is worth dwelling on. You paid USD 900 yourself on that claim — the USD 500 that went against the excess plus the USD 400 sitting above the benefit limit — but only USD 500 counted towards working the excess off. Because the limit is applied first, money spent above an inner limit does not reduce your excess. It disappears in both directions at once.
The renewal rule that catches people out
AXA also states that if a claim goes over your renewal, the excess is taken off the amount paid for the claim before renewal, and then taken off the amount paid for the claim after renewal. A single episode of care spanning the renewal date can therefore absorb two full excesses.
William Russell's plan agreement reaches a comparable place from a different starting point. Where the excess is a per-claim excess, it is the amount payable for each course of treatment for each specific illness or injury; when the policy renews it applies again; and if you later begin a new course of treatment for the same illness or injury, that is treated as a new claim and the excess applies again. Where the excess is annual, it is applied once per policy year regardless of how many claims you make — but you must still submit claims falling within it, because the insurer can only start reimbursing once your eligible expenses exceed it.
That is the difference between the two shapes. A per-year excess is a single, knowable cost. A per-claim excess repeats with each new condition, each new course of treatment and each renewal, and it is the cheaper of the two on premium for exactly that reason.
What the excess does not touch
Insurers publish short lists of benefits from which no excess is deducted, and the lists follow a logic. AXA exempts a cash payment where treatment was provided free of charge, an external prosthesis, evacuation or repatriation, a cash payment where chemotherapy or radiotherapy was free, dental treatment other than for accidental damage, wigs and head coverings, disability compensation, the Virtual Doctor service and the Mind Health service. Cigna's carve-out is narrower: no deductible applies to in-patient cash benefits or newborn care benefits. William Russell likewise does not apply an excess to its hospital cash benefit.
The pattern is the same across all three: benefits designed to pay you — a cash sum for a night in hospital, a lump sum on disability — sit outside the excess, as do the services the insurer would rather you used, such as virtual consultations and mental health support. If your plan carries a large excess, those are the parts of it that still work from day one. Evacuation and repatriation sitting outside it matters more than it sounds, because that is the benefit where the bill can be six figures and arrive with no notice.
The order of operations, and why it is not the same everywhere
Because a claim can be subject to a percentage, a fixed sum and a cap simultaneously, the order in which the three are applied changes the amount paid. There is no market standard, and the published orders genuinely differ.
| Insurer | Published sequence |
|---|---|
| Cigna | The deductible is calculated before the cost share |
| AXA | The benefit limit is applied before the excess is taken off |
| William Russell | Co-insurance first, then the excess, then the limit |
To see why this matters, take a benefit carrying a 20 per cent co-insurance and a USD 1,000 annual limit, an excess of USD 500 still to run, and an eligible cost of USD 2,000. Apply the percentage first, then the excess, then the cap, and the insurer's contribution still reaches the limit. Apply the cap first and the percentage and excess are taken out of a much smaller number, leaving the insurer paying a fraction of it. Same wording in every other respect; materially different cheque.
The instruction is not to memorise anyone's sequence but to find it. It sits in the claims section of the policy wording rather than the table of benefits, and if it is not stated at all, that is worth asking about before you buy.
Who you pay, and what it costs you in convenience
Cigna states that you are responsible for paying the amount of any deductible and cost share directly to the hospital, clinic or medical practitioner, and separately that if you have chosen a deductible or cost share option you will need to pay your provider directly.
That sentence is the hidden price of cost sharing. The main attraction of a good international plan is that the insurer settles with the hospital and you sign nothing at the desk. Introduce a deductible or a cost share and you re-introduce a payment you have to make yourself, at the point of treatment, in local currency, before anyone has agreed what the eligible amount is. William Russell describes the same mechanic from the insurer's side: where it settles a hospital invoice directly, it deducts the excess, the co-insurance and any ineligible items, and you pay that shortfall to the provider. This is a trade-off rather than a technicality, and it runs through direct billing versus reimbursement and how an IPMI claim works.
One narrow relief is worth knowing about. Where another insurer has already paid part of a claim, William Russell allows those sums to be offset against the excess payable under its own policy, subject to confirmation from that insurer. If you hold a local scheme alongside international cover, that is the provision to quote.
How the published ladders are built
Cost-sharing options are sold as short ladders, and the shape of the ladder tells you how the insurer expects the plan to be used.
Cigna publishes the fullest structure for its International Outpatient module: five deductible steps beginning at nil, four cost-share steps running from nil to 30 per cent, and an out-of-pocket maximum. It also states that a deductible and/or cost share can be attached to the International Medical Insurance core option and/or the International Outpatient option, so the buyer decides not just how much risk to take but where to take it. That choice is real, because out-patient claims are frequent and small while in-patient claims are rare and large.
Allianz's classic structure published the opposite constraint: a deductible could attach to the Core Plan or to the Out-patient Plan, but it was not possible to choose both. Now Health International builds its levers differently again, offering annual deductibles alongside a per-visit out-patient excess and out-patient co-insurance at 10 or 20 per cent — a per-visit charge being a brake on routine consultations rather than a way of absorbing a catastrophe.
Two further design points are worth checking against your own household. Cigna determines the deductible, cost share and out-of-pocket maximum separately for each beneficiary and each period of cover, and AXA states that the excess applies per person. Integra Global, now part of HCI Group Global, markets a family deductible shared across the family rather than met separately by each member. For a household of four, that is the difference between one excess and four — see family and dependant cover.
What to check before you choose a level
Read the excess definition on the certificate of insurance rather than the quotation, and establish four things: whether it is annual or per claim, whether it is per person or per family, what sequence the insurer applies to limits and percentages, and which benefits are exempt from it.
Then check what happens at renewal. William Russell's agreement lists the excess amount among the factors determining the renewal premium, notes that the discounts and loadings applied to excesses can change, and reserves the right to change the excess amounts available. An excess is not a fixed feature of the contract in the way the annual limit is; it is a priced lever that both sides can move. Reducing an IPMI renewal premium covers how far it travels, and the plan builder shows the structural choices side by side.
Finally, be honest about cash flow rather than arithmetic. A high excess is a good trade only if you can produce the money at a hospital reception desk in an unfamiliar country on the day — a different question from whether it lowers your annual cost.
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Frequently asked questions
Is a deductible the same thing as an excess?
In international medical insurance they are the same mechanism under two names, and Cigna's own customer documentation says so directly, defining the deductible as the amount you pay towards your medical expenses per period of cover and adding that it is also known as an excess. The word you meet depends on the insurer's house style rather than on any difference in how the money works. What does differ between insurers is whether the amount applies once per year, once per claim, per person or per family, so read that detail rather than the label.
What is the difference between co-insurance and a deductible?
A deductible is a fixed sum and a co-insurance is a percentage. Allianz Care draws the line in exactly those terms, describing a deductible as a fixed amount you pay towards medical bills before the insurer begins to contribute and a co-payment as a percentage of medical costs. The practical consequence is that a deductible is capped by its own size, whereas a percentage keeps taking a slice of every claim however large the claim becomes, which is why plans that use co-insurance usually pair it with an out-of-pocket maximum.
Can I be charged the same excess twice for one course of treatment?
Yes, if the treatment straddles your renewal date. AXA's handbook states that where a claim goes over the renewal, the excess is taken off the amount paid before renewal and then taken off the amount paid after renewal. One continuous episode of care can therefore absorb two full excesses. William Russell operates a comparable rule for a per-claim excess, which applies again when you renew and again if you later begin a new course of treatment for the same illness or injury.
Does choosing a deductible mean I lose direct billing?
Usually in part. Cigna states that you are responsible for paying any deductible and cost share directly to the hospital, clinic or medical practitioner, and that if you have chosen a deductible or cost share you will need to pay your provider directly. So the insurer may still settle the balance with the hospital, but the share you owe becomes your transaction with the provider rather than something netted off invisibly. Budget for being asked at the desk rather than assuming a cashless experience.
Are any claims exempt from the excess?
Most insurers publish a short exempt list. AXA does not apply its excess to evacuation or repatriation, external prostheses, dental treatment other than accidental damage, wigs and head coverings, cash payments where treatment was provided free, disability compensation, the Virtual Doctor service or the Mind Health service. Cigna states that no deductible applies to in-patient cash benefits or newborn care benefits, and William Russell likewise does not apply an excess to its hospital cash benefit. The pattern is that benefits designed to pay you rather than a provider sit outside the excess.
Is the deductible shared across my family or applied per person?
It depends on the insurer, and it is one of the few genuine design differences in this part of the market. Cigna states that the deductible, cost share and out-of-pocket maximum are determined separately for each beneficiary and each period of cover, and AXA states plainly that the excess applies per person. Integra Global, now part of HCI Group Global, markets a family deductible shared across the family rather than met separately by each member, which changes the arithmetic considerably for a household with several claimants.
Does an out-of-pocket maximum cap everything I might pay?
No, and this is the most common misreading. Cigna defines the out-of-pocket maximum as the maximum you would have to pay in cost share per period of cover. It caps the percentage element only. Your deductible sits outside it, anything above a benefit limit sits outside it, treatment that is excluded or outside your area of cover sits outside it, and charges the insurer regards as above reasonable and customary rates sit outside it. It is a ceiling on one lever, not a ceiling on your exposure.
This guide is general information only and does not constitute financial, legal, medical or tax advice. Global Investments is not authorised by the Financial Conduct Authority. Insurance products, benefit schedules and premiums are revised regularly, and mandatory health insurance requirements change frequently — in several jurisdictions they are described differently even between official sources. Nothing here is a recommendation of any product or insurer. Confirm the legal position with the relevant regulator or a locally qualified adviser, and confirm cover terms with the insurer, before acting.