What Happens If Your Health Insurance Claim Is Refused?

Having a private health insurance claim refused can be stressful, especially if you expected your insurer to pay for a consultation, scan, operation, physiotherapy, mental health treatment or cancer care. You may be left wondering whether you must pay privately yourself, return to the NHS, appeal the decision or make a complaint.

A refused claim does not always mean the insurer is wrong. Private health insurance policies have exclusions, benefit limits, pre-authorisation rules and underwriting conditions. But a refusal also does not always mean the decision is final. Sometimes claims are declined because the insurer has incomplete information, misunderstood the timeline, applied the wrong policy term, or needs further medical evidence.

This guide explains why UK private health insurance claims are refused, what to do first, how to challenge the decision, when to complain, what evidence may help, and when the Financial Ombudsman Service may be able to look at your case.

1. First steps if your health insurance claim is refused

If your insurer refuses a claim, the first step is to understand exactly why. Do not rely only on a short phone call or a vague explanation such as “not covered” or “pre-existing”. Ask for the decision in writing.

A proper refusal should explain:

• which condition or treatment is being refused;
• which policy term, exclusion or limit the insurer is relying on;
• what medical evidence was used;
• whether the decision is final or more evidence can be provided;
• how to complain if you disagree.

MoneyHelper explains that if you are unhappy with the reasons given for a rejected insurance claim, you have the right to complain. It is also sensible to check your policy documents before contacting the insurer with your complaint.

If you have not already read it, this guide may also help: How to make a health insurance claim in the UK.

2. Common reasons health insurance claims are refused

Private medical insurance is usually designed to cover private treatment for eligible acute conditions that start after your policy begins. Because of that, claims are often refused when the insurer believes the treatment falls outside the purpose or limits of the policy.

The condition is considered pre-existing

This is one of the most common reasons for a refused claim. A pre-existing condition is not always something that was formally diagnosed before your policy began. It can also include symptoms, investigations, medication, GP advice, referrals or treatment that happened before cover started.

For example, the insurer may refuse a claim if:

• you had knee pain before buying the policy, then later claimed for a knee scan or operation;
• you had abdominal symptoms before joining, then later needed private gastroenterology tests;
• you had anxiety or depression symptoms before joining, then later claimed for therapy;
• you were waiting for test results or a referral before the policy began;
• your GP records show earlier symptoms linked to the claim.

For more detail, see Pre-existing conditions and health insurance: what you need to know.

The condition is classed as chronic rather than acute

Private health insurance usually focuses on acute conditions, not routine long-term management of chronic illness. A chronic condition is usually ongoing, recurring or likely to need continued monitoring or treatment.

Examples may include:

• diabetes;
• asthma;
• high blood pressure;
• arthritis;
• inflammatory bowel disease;
• epilepsy;
• chronic kidney disease;
• some long-term mental health conditions.

The insurer might cover an investigation or an acute flare-up in some circumstances, depending on the policy wording, but refuse routine monitoring, repeat appointments, medication reviews or long-term management.

The treatment is excluded

Some treatments are commonly excluded from standard private health insurance. These may include:

• emergency care and A&E treatment;
• normal pregnancy and childbirth;
• fertility treatment and IVF;
• cosmetic treatment;
• routine dental care;
• routine optical care;
• health screening not medically indicated;
• experimental or unproven treatment;
• treatment abroad unless specifically covered;
• weight loss treatment or medication, unless specifically included.

For a broader guide to what is usually included and excluded, see What does private health insurance actually cover?

The claim was not pre-authorised

Many policies require you to contact the insurer before arranging private treatment. If you book a consultation, scan, operation or therapy sessions without authorisation, the insurer may refuse to pay, even if the condition might otherwise have been covered.

This is especially important for:

• MRI scans;
• CT scans;
• specialist consultations;
• private surgery;
• physiotherapy;
• mental health treatment;
• inpatient or day-case hospital treatment.

If you did not get authorisation, ask the insurer whether retrospective review is possible. It may still refuse, but you should ask what evidence would be needed.

You used a non-approved consultant or hospital

Most PMI policies have a hospital list and recognised consultant rules. If you use a hospital outside your list, or a consultant not recognised by your insurer, the claim may be refused or only partly paid.

This can happen when patients choose a consultant based on recommendation, location or speed without checking whether the insurer will cover that provider.

The policy does not include the benefit you need

A claim may be refused because the policy simply does not include that type of cover. For example:

• you claim for outpatient consultations, but your outpatient cover is limited;
• you claim for mental health therapy, but mental health is excluded;
• you claim for physiotherapy, but therapies are not included;
• you claim for dental treatment, but you do not have a dental add-on;
• you claim for a private GP appointment, but routine private GP care is not covered.

This is why it is important to compare more than the monthly premium when buying cover. For help choosing cover, see How to choose private health insurance in the UK.

A benefit limit has been reached

Some claims are not refused entirely but are capped. Your policy may have annual or condition-specific limits for outpatient care, mental health, physiotherapy, diagnostics, cancer follow-up or other benefits.

For example:

• your policy covers only £1,000 of outpatient care per year;
• you have used your annual physiotherapy allowance;
• your mental health sessions are capped;
• your chosen hospital list does not include the provider you used;
• the insurer pays only up to a recognised consultant fee schedule.

In this situation, the insurer may pay part of the claim and leave you to pay the rest.

The insurer says the treatment is not medically necessary

Insurers usually require treatment to be medically necessary and evidence-based. A claim may be refused if the insurer believes the treatment is not clinically appropriate, is experimental, is not supported by evidence, or is not needed for the condition.

This can happen with newer treatments, non-standard therapies, some injections, repeated scans, alternative treatments or private treatment plans that go beyond what the insurer considers reasonable.

Information was not disclosed correctly

If you applied under full medical underwriting and did not disclose relevant medical history, the insurer may refuse a claim or add an exclusion. In serious cases, it could cancel the policy.

This does not always mean deliberate dishonesty. Sometimes people forget old symptoms, do not realise a GP conversation matters, or assume a past problem is irrelevant. But if the policy asked about it and it was not disclosed, the insurer may rely on that when deciding the claim.

3. Step-by-step: how to challenge a refused health insurance claim

Step 1: Ask for the refusal in writing

If the refusal was given by phone, ask for a written decision. You need a clear record before deciding what to do next.

Ask the insurer to confirm:

• the reason for refusal;
• the exact policy clause or exclusion used;
• the evidence reviewed;
• whether any part of the claim is payable;
• whether more evidence could change the decision;
• how to appeal or complain.

Step 2: Read the policy wording carefully

Look at the actual policy wording, not just the summary or sales page. Check:

• definitions of acute and chronic conditions;
• pre-existing condition wording;
• moratorium or full medical underwriting terms;
• outpatient limits;
• hospital list rules;
• consultant recognition rules;
• excess rules;
• benefit limits;
• claims authorisation requirements;
• the complaints procedure.

If the refusal does not clearly match the policy wording, make a note of that.

Step 3: Build a timeline

A timeline is especially important where the insurer says the condition is pre-existing or chronic.

Write down:

• when the policy started;
• when symptoms first appeared;
• when you first contacted a GP or clinician;
• when any referral was made;
• when tests or scans were requested;
• when the diagnosis was made;
• when the insurer was contacted;
• when treatment was recommended;
• when treatment took place, if it already happened.

This helps you see whether the insurer’s decision is based on the correct dates.

Step 4: Ask what medical evidence was used

The insurer may have used GP notes, hospital letters, consultant reports, claim forms or underwriting documents. Ask which records were reviewed.

Sometimes a refusal is based on a brief note in your GP record that does not tell the full story. For example, a note about “back pain” years ago may not necessarily prove that a new injury is the same condition. A consultant may be able to clarify whether the current problem is related or separate.

Step 5: Speak to your GP or consultant if medical clarification is needed

If the refusal depends on medical interpretation, ask your GP or consultant whether they can provide a letter explaining:

• when the current condition likely started;
• whether it is linked to previous symptoms;
• whether it is a new acute condition;
• whether it is part of a chronic condition;
• why the recommended treatment is medically necessary;
• whether the treatment is standard evidence-based care.

A clear medical letter can be helpful, especially if the insurer has misunderstood the condition or relied on incomplete records.

Step 6: Ask for the claim to be reviewed

Before making a formal complaint, you can ask the insurer to review the decision. Provide any missing documents, corrected dates or medical clarification.

Keep your message clear and factual. Explain:

• why you believe the refusal is wrong;
• which policy wording supports your view;
• what evidence you are attaching;
• what outcome you want.

For example, you may ask the insurer to approve the consultation, pay the scan invoice, authorise surgery, reimburse treatment already paid for, or reconsider whether a condition is pre-existing.

Step 7: Make a formal complaint if the review does not resolve it

If the insurer does not change its decision and you still disagree, use its formal complaints process. Your complaint should include:

• your policy number;
• your claim number;
• the date of the refusal;
• a short summary of the claim;
• why you disagree;
• the policy wording you rely on;
• supporting medical evidence;
• copies of invoices or receipts, if relevant;
• the outcome you want.

Step 8: Escalate to the Financial Ombudsman Service if needed

If you are unhappy with the insurer’s final response, or if it does not respond within the required timeframe, you may be able to take the complaint to the Financial Ombudsman Service.

The Ombudsman can look at whether the insurer handled the claim fairly, applied the policy wording properly, communicated clearly and reached a reasonable decision based on the evidence.

4. What evidence can help challenge a refused claim?

The best evidence depends on why the claim was refused. Useful documents may include:

• your full policy wording;
• policy schedule and certificate;
• underwriting documents;
• claim forms;
• authorisation emails or numbers;
• GP referral letters;
• consultant reports;
• scan or test reports;
• GP records showing symptom dates;
• letters clarifying whether a condition is new or pre-existing;
• invoices and receipts;
• notes from phone calls;
• emails or letters from the insurer;
• screenshots from claims portals, if relevant.

If the issue is medical, a consultant letter may be particularly useful. If the issue is administrative, such as pre-authorisation or provider approval, emails and call notes may matter more.

5. If the refusal is about pre-existing conditions, chronic illness or authorisation

If the refusal is because of a pre-existing condition

Pre-existing condition refusals often depend on dates and wording. The insurer may say your symptoms, advice, medication or investigations began before the policy started.

To challenge this, check:

• what the policy means by pre-existing condition;
• how far back the insurer looks;
• whether the policy uses moratorium or full medical underwriting;
• whether the current condition is genuinely linked to previous symptoms;
• whether you had a symptom-free and treatment-free period;
• whether the insurer has interpreted GP notes correctly;
• whether the condition was disclosed at application stage.

Ask your consultant whether the current condition is medically related to the previous issue. For example, old general back pain may or may not be connected to a new traumatic injury. Previous abdominal discomfort may or may not be linked to a later diagnosis. The details matter.

If the refusal is because the condition is chronic

If the insurer says the claim is for chronic condition management, ask it to explain whether any part of the claim relates to an acute flare-up, new complication or diagnostic investigation.

For example, routine diabetes reviews may be excluded, but a new unrelated symptom might still be considered. Routine arthritis management may be excluded, but a new injury could be assessed separately.

Ask:

• Is the whole claim refused, or only ongoing management?
• Would the insurer cover diagnostic tests but not long-term follow-up?
• Is the current problem a new acute episode?
• What medical evidence would change the decision?

If the refusal is because you did not get authorisation

This can be difficult, because many policies clearly require pre-authorisation. However, you can still ask whether the insurer will review the claim retrospectively.

Explain:

• why treatment was arranged before authorisation;
• whether it was urgent;
• whether you tried to contact the insurer;
• whether the provider told you it would be covered;
• whether the treatment would have been authorised if requested in advance;
• whether you have all invoices and medical evidence.

The insurer may still refuse, but if there were exceptional circumstances or poor communication, it is worth asking for a review.

6. What if only part of the claim is paid?

Sometimes a claim is not fully refused, but you still receive a bill. This may happen because of:

• an excess;
• a benefit limit;
• a consultant fee shortfall;
• a non-covered test;
• use of a non-approved provider;
• a hospital list restriction;
• a treatment plan that went beyond authorisation.

Ask the insurer and provider for an itemised breakdown. You need to know whether the unpaid amount is genuinely your responsibility, an admin error, a provider billing issue or a disputed shortfall.

If the unpaid amount is due to a shortfall, ask whether the consultant or provider charged above the insurer’s recognised fee schedule. If the unpaid amount is due to a benefit limit, ask whether the limit was explained clearly and whether any further cover remains.

7. What if you still need treatment while the dispute is ongoing?

This is one of the hardest parts of a refused claim. If you still need care, consider your options carefully.

You may be able to:

• continue through the NHS;
• stay on or return to an NHS waiting list;
• pay privately for a consultation only;
• pay privately for tests and decide later about treatment;
• ask the provider about staged payments;
• ask the insurer whether any part of the treatment can be covered;
• wait for the complaint outcome before arranging non-urgent private treatment.

Do not cancel NHS appointments or waiting list places until you are confident private treatment is authorised and affordable.

8. Can you still use the NHS or pay privately after a refused claim?

Can you still use the NHS?

Yes. A private insurance refusal does not remove your right to NHS care. You can still use NHS GP services, NHS referrals, NHS hospital care, urgent care and emergency care.

If your insurer refuses to pay for private treatment, speak to your GP or NHS specialist about the NHS pathway. You may need to be referred or continue on an existing waiting list.

For broader context, see NHS vs private healthcare: when does insurance actually make sense?.

Can you pay privately and claim back later?

This is risky. If your claim has already been refused, paying privately does not guarantee reimbursement later. You may win a complaint, but you may also remain responsible for the cost.

Before paying privately, ask:

• What is the full cost?
• What exactly is included?
• Are consultant, hospital and anaesthetist fees included?
• Are follow-up appointments included?
• What happens if complications occur?
• Could the insurer reconsider before treatment?
• Could the NHS provide the treatment instead?

If the cost is large, consider getting advice before committing.

9. How to write a complaint letter about a refused health insurance claim

Your complaint does not need to be long, but it should be clear. You can use this structure:

• Policy details: include your policy number and claim number.
• What happened: briefly explain the condition, referral and treatment requested.
• The refusal: state when the claim was refused and what reason was given.
• Why you disagree: explain the issue clearly and refer to policy wording if possible.
• Evidence: list attached documents.
• Outcome wanted: say what you want the insurer to do.

Keep the tone factual. Avoid emotional accusations, even if you are understandably upset. A clear timeline and evidence are more persuasive.

Complaint letter template

Dear [Insurer Name],

I am writing to make a formal complaint about the refusal of my private health insurance claim.

My policy number is [policy number] and my claim reference is [claim reference]. The claim relates to [condition/treatment]. I was informed on [date] that the claim had been refused because [reason given].

I disagree with this decision because [briefly explain why]. In particular, I believe [refer to policy wording, medical timeline, authorisation, or medical evidence].

I have attached the following evidence: [list referral letter, consultant report, GP records, invoices, authorisation emails or other documents].

Please review the decision and confirm whether the claim can be accepted. If you maintain the refusal, please provide a full written explanation, including the exact policy wording relied upon, the evidence reviewed and details of how I can escalate the complaint.

Yours faithfully,

[Your name]

10. How long does the insurer have to respond, and what can the Financial Ombudsman look at?

For most types of complaint, the insurer has up to eight weeks to provide a final response before you can usually take the complaint to the Financial Ombudsman Service. If the insurer sends a final response sooner and you are still unhappy, you may be able to go to the Ombudsman at that point.

The Financial Ombudsman Service will not simply replace your insurer’s decision with whatever outcome you prefer. It will look at whether the insurer acted fairly and reasonably.

It may consider:

• the policy wording;
• whether exclusions were clear;
• what you were told when buying the policy;
• your underwriting method;
• medical evidence;
• whether the condition was pre-existing;
• whether the insurer interpreted records fairly;
• whether the claim process was handled properly;
• whether communication was clear;
• whether delays caused avoidable problems.

The Ombudsman may uphold the insurer’s decision, ask the insurer to pay some or all of the claim, require compensation for poor service, or recommend another fair outcome depending on the facts.

11. When a refused claim may be difficult to overturn — or worth challenging

When a refused claim may be difficult to overturn

Some refusals are harder to challenge, especially where the policy wording is clear. For example:

• the condition clearly started before the policy began;
• the treatment is clearly excluded;
• you knowingly used a non-approved provider;
• you had no outpatient cover but claimed for outpatient tests;
• you exceeded a clear benefit limit;
• you did not disclose relevant medical history when specifically asked;
• you booked non-urgent treatment without required authorisation.

Even then, it may still be worth checking whether the insurer communicated clearly, applied the right policy version and considered all evidence.

When a refused claim may be worth challenging

A challenge may be stronger if:

• the insurer has misunderstood when symptoms started;
• the current condition is not medically linked to a past condition;
• the policy wording is ambiguous;
• you were given incorrect information by the insurer;
• you had authorisation but the insurer later refused payment;
• the provider was listed as approved;
• the insurer relied on incomplete records;
• the claim was partly paid but the shortfall was not explained;
• there were unreasonable delays or poor communication;
• your employer or broker gave different information about cover.

How to reduce the chance of future refused claims

For future claims, these habits can help:

• call the insurer before booking private care;
• ask whether the condition may be pre-existing;
• get authorisation numbers in writing;
• check exactly what has been authorised;
• ask whether scans or surgery need separate authorisation;
• check consultant and hospital approval;
• ask about shortfalls before treatment;
• keep copies of letters, invoices and receipts;
• update the insurer if the treatment plan changes;
• read renewal documents for changes to benefits or limits.

Questions to ask after a refused claim

• What exact policy wording are you relying on?
• Is the whole claim refused or only part of it?
• What evidence did you review?
• Did you review my GP records?
• Can I provide more medical evidence?
• Would a consultant letter help?
• Is the issue pre-existing, chronic, excluded, unauthorised or outside benefit limits?
• Was the consultant or hospital not approved?
• Can this be reviewed by a senior claims handler?
• How do I make a formal complaint?
• When will I receive your final response?
• Can any part of the claim still be paid?
• Can future treatment for this condition be covered?

Final thoughts

A refused health insurance claim can be frustrating, but the best response is methodical: get the refusal in writing, check the policy wording, build a timeline, gather medical evidence and ask for a review if you believe the decision is wrong.

Some refusals are valid because the policy clearly excludes the condition or treatment. Others may be open to challenge, especially where the insurer has misunderstood the medical history, applied a broad pre-existing condition exclusion unfairly, failed to consider evidence, or communicated poorly.

While the dispute is ongoing, remember that you can still use NHS care. Do not cancel NHS appointments unless private treatment is clearly authorised and affordable.

Private health insurance works best when you understand the policy before claiming, contact the insurer early, and keep written evidence at every stage.

12. FAQ: Refused health insurance claims in the UK

Can a private health insurance claim be refused?

Yes. Claims can be refused if the condition is pre-existing, chronic, excluded, not authorised, outside benefit limits, treated by a non-approved provider or not considered medically necessary.

What should I do first if my claim is refused?

Ask for the refusal in writing. The insurer should explain the reason, the policy wording relied on and whether you can provide more evidence.

Can I appeal a refused health insurance claim?

You can ask the insurer to review the decision and, if needed, make a formal complaint. If you are unhappy with the final response, you may be able to contact the Financial Ombudsman Service.

How long does the insurer have to respond to a complaint?

For most complaints, the insurer has up to eight weeks to provide a final response before you can usually take the complaint to the Financial Ombudsman Service.

Can a claim be refused because of a pre-existing condition?

Yes. This is common. A condition may be treated as pre-existing if symptoms, advice, treatment, medication or investigations existed before the policy began.

What if I had symptoms but no diagnosis before buying the policy?

The insurer may still treat the later diagnosis as pre-existing if the symptoms were related and began before cover started.

Can a claim be refused because the condition is chronic?

Yes. Routine long-term management of chronic conditions is usually excluded from standard PMI. Some acute flare-ups or investigations may be treated differently depending on the policy.

Can a claim be refused if I forgot to get authorisation?

Yes. Many policies require pre-authorisation before private treatment. You can ask for retrospective review, but payment is not guaranteed.

What is a shortfall?

A shortfall is the difference between what a provider charges and what the insurer agrees to pay. You may have to pay the shortfall yourself.

What evidence helps challenge a refused claim?

Useful evidence may include policy wording, referral letters, consultant reports, GP records, test results, authorisation emails, invoices, receipts and a clear medical timeline.

Can I still use the NHS if my private claim is refused?

Yes. A private insurance refusal does not affect your right to NHS care. You can still use NHS GP, hospital, urgent and emergency services.

Should I pay privately while appealing?

Be careful. Paying privately does not guarantee reimbursement later. Ask for full costs, consider NHS options and get advice if the amount is large.

Can the Financial Ombudsman force the insurer to pay?

The Financial Ombudsman can require an insurer to put things right if it decides the insurer acted unfairly or wrongly. Outcomes depend on the policy wording and evidence.

Can a refused claim affect future premiums?

It may not affect premiums in the same way as a paid claim, but your premium can still change at renewal for other reasons such as age, medical inflation and insurer pricing.

Can I switch insurer after a refused claim?

You can apply elsewhere, but be careful. The condition involved may be treated as pre-existing by a new insurer, and switching could reduce rather than improve cover.

Can my employer help if it is a workplace health insurance policy?

Possibly. Your HR or benefits team may help explain the policy, contact the insurer or clarify whether the claim should fall under the workplace scheme.