Can you switch health insurance with pre-existing conditions?
A lower premium only helps if the new cover still meets your needs. Find out what can carry across, what can change and which documents to obtain first.
You may be able to switch, but a new insurer may not cover an existing condition. Ask it to check your current terms, medical history and planned treatment. This check is called underwriting. Get the new terms in writing. Do not assume your old cover will carry across unchanged.
The three situations to distinguish
| Your situation | Route to ask about | What to check |
|---|---|---|
| Existing fully medically underwritten policy | Continued personal medical exclusions (CPME), where available. | Accepted exclusions, medical declarations and the new policy's general terms. |
| Existing moratorium policy | Continued moratorium. | The original date, the receiving insurer's moratorium definition and any added exclusions. |
| Leaving an employer scheme | A specific company-leaver continuation offer. | Deadline, start date and which benefits change on personal cover. |
The Exeter offers both CPME and continued moratorium. CPME stands for continued personal medical exclusions: the new insurer assesses whether it can carry over your existing exclusions. With continued moratorium, it assesses cover based on your original moratorium start date. The Exeter needs your previous certificate and answers about recent health issues and recent or planned treatment. Its continued-moratorium terms warn that it may add exclusions. Read the underwriting options.
What does CPME preserve?
CPME is a way to assess your medical history. It does not mean the two policies have the same benefits. The new insurer might accept a condition but offer a lower outpatient limit. Its hospital list may differ, or an optional benefit may be missing.
Ask two separate questions: will you accept my medical history? and what treatment will this plan pay for? You need both answers. Aviva says you are unlikely to meet its medical-history switch rules if you are having treatment and want it to continue. It may offer new underwriting instead. This would exclude pre-existing conditions. Aviva switching guidance.
Three examples to discuss with your adviser
A past problem, with no current symptoms: ask if you need to declare it and if any exclusion applies. Do not leave it out just because it feels resolved.
Tests underway but no diagnosis: explain your symptoms, referrals and booked tests. “No diagnosis yet” does not mean “no medical history”. Follow the questions on the form when deciding what to declare.
Active treatment: ask about your remaining appointments, consultant and treatment approvals. The new insurer needs to assess the switch with this care in mind. A general statement that you can join is not enough.
These examples are for illustration. The new insurer must assess each case before it decides whether to accept it.
Your switch comparison checklist
- Collect the current documents. Renewal notice, membership certificate, benefit schedule and any exclusion letters.
- List what has changed. Symptoms, consultations, investigations, medication and planned treatment relevant to the insurer's questions.
- Compare benefits separately. Include outpatient allowances, cancer terms, therapies, hospital access, excess and referral rules.
- Request the written underwriting decision. Check each insured person's position, not just the main policyholder's.
- Agree the dates. Confirm the new acceptance and start date alongside the old policy's cancellation arrangements, avoiding an unintended gap.
When staying deserves serious consideration
If a new plan excludes key cover or cannot confirm ongoing care, ask your current insurer for options. You could compare a different excess or other ways to lower the cost. Check how each change would affect the care you need. Losing essential cover is not a like-for-like saving.
Compare three choices: keep your current terms, change your current cover, or switch. Write down the yearly price and key cover changes for each.
Leaving company cover is a separate route
Leaving a work scheme needs a separate check. Ask about a company-leaver offer before filling in a standard switch form. Bupa and AXA have specific ways to continue cover, with their own rules. Our leaving company health insurance guide explains what to gather and when to act.
For the wider annual-review process, use the existing health insurance renewal guide.
Common questions
Does CPME guarantee the same cover?
No. The new insurer must accept you first. Its benefit limits, general exclusions, hospital access and other terms may differ. Read its written medical-history decision and benefit schedule together.
Can I switch while waiting for test results?
Ask the new insurer to assess your symptoms and pending tests first. A health problem may still need to be declared even if you have no diagnosis.
Should I cancel my old policy while an application is assessed?
Do not cancel while you are waiting for acceptance. First check that the new terms meet your needs and confirm the start date. Then arrange to end the old policy without a gap in cover.
Sources and policy scope
Insurer documents checked on 7 October 2026. Your quotation, policy wording and membership certificate determine your cover. Product versions and renewal terms can differ.
- The Exeter: cover and underwriting options
- Aviva: switching health insurance
- Bupa: leaving your company scheme
- AXA: leaving a company scheme
The information provided on this website is for general information purposes only and does not constitute advice. Insurance options may vary depending on individual circumstances.