Switching health insurers without restarting your medical history

There is a short answer about continuity underwriting and a useful one, and they are not the same. What follows is the useful one.

Why switching is harder than it looks

Health cover is normally an annual contract, so nothing prevents you moving insurer at renewal if the price has climbed. The obstacle is not the contract but the underwriting, because a new insurer starts by assessing you as a new applicant. Conditions your existing insurer has been paying for can therefore become excluded the moment you sign somewhere cheaper.

That risk grows with every year you hold cover, since each year of treatment adds material to the history being assessed. The longer you have held a policy, the more the accumulated goodwill of an existing insurer is actually worth to you.

What continuity terms do

Many insurers offer switching terms that carry your existing underwriting basis across rather than starting the assessment again. On a moratorium basis this usually means your original start date is preserved, so any clear period you have built is not lost.

Put simply, on a fully underwritten basis it usually means the exclusions already written on your old schedule are copied onto the new one. Continuity carries the exclusions forward; it does not remove them, and a new insurer may add its own exclusions on top. The offer is discretionary in most markets, so it can be refused or made conditional on the new insurer seeing your records.

What continuity does not carry across

Benefit limits, waiting periods for specific benefits and any accrued no-claims position may all reset with the new contract. A course of treatment already under way is frequently the sticking point, because insurers usually pay only from the date they went on risk. If a claim is open or a referral has been made, moving mid-treatment can leave the cost of the remaining sessions with you.

Some insurers accept transfers only at your existing renewal date, which makes timing part of the decision rather than an afterthought. Cover for anything that arose after your application but before the new policy started is a gap that catches people out.

Why the cheaper quote is cheaper

A lower premium is rarely generosity; it usually reflects a narrower hospital list, a higher excess or a thinner outpatient allowance. It can also reflect a fresh moratorium, which prices well because the insurer has quietly re-excluded everything recent in your history. Comparing headline prices without comparing the underwriting basis therefore compares two products that are not doing the same job.

The introductory year is also worth checking, since a discount that lapses at the first renewal reverses the saving completely.

Ask what the same policy costs at standard rates before deciding that the switch has saved you anything at all.

Group schemes are a separate case

Cover bought by an employer is often underwritten on terms an individual could not obtain on their own account. Many schemes allow you to move onto a personal policy when you leave, without your history being reassessed from scratch.

In practice, that option normally has a short window measured in weeks from the day the group cover stops, and it is easy to miss. Taking it usually means paying a personal premium that is far higher than the payroll deduction you had grown used to. Letting the window close is the point at which several years of accepted conditions can become uninsurable in practice.

Adjust the size of it until it is something you would actually do tired.

How to test an offer properly

Ask in writing whether the new insurer accepts your current underwriting basis and whether your original start date is preserved. Ask for the list of conditions that would be excluded if continuity were refused, so you can see the downside case.

Where it helps most, check whether your usual hospital and your existing consultant appear on the new list before the price persuades you. Keep every document from the old policy, because the new insurer may need the old schedule to honour the terms it offered. Terms vary widely between insurers and countries, so treat this as a description of the mechanism rather than guidance on any policy.

The takeaway

Before you move health insurer, get the underwriting basis in writing; the premium is the easy part to compare and the least important.

The version you keep doing is the version that works.