Underwriting Guide · 14 min read

Moratorium Underwriting vs Full Medical Underwriting

Moratorium underwriting and full medical underwriting (FMU) are two ways health insurance providers decide what is covered in your policy. The main difference is how they handle pre-existing conditions and your medical history.

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Written by Patrick Baxter, Founder & Health Insurance Broker
Fact-checked by Sadie Sansford, Business Development Director
Updated March 2026
14 min read

What This Guide Covers

Moratorium vs FMU: key differences
What "fully medically underwritten" means
How moratorium works in detail
Why get private health insurance
Switching insurers: CPME & MHD
FAQs: cancer, costs & which is better
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Moratorium

No medical questions upfront. Pre-existing conditions excluded for 2 years, then may be covered.

Full Medical (FMU)

Full health questionnaire. Clarity from day one on what's covered. Often lower premiums.

MHD

Medical History Disregarded. Everything covered from day one — usually via employer schemes.

DifferencesFMU ExplainedMoratorium ExplainedFull UnderwritingWhy PMIHow Moratorium WorksWhen Worth ItWhy Need PMIDetailed ComparisonFAQs
The Key Difference

What is the Difference Between Moratorium Underwriting and Full Medical Underwriting?

Moratorium Underwriting

This type has a waiting period, called a moratorium period, for pre-existing conditions. If you don't have symptoms or need treatment for those conditions for two years after your policy starts, your insurer may cover them. Moratorium underwriting is faster to set up because you don't need to fill out a detailed medical questionnaire. However, premiums are often higher because insurers don't have full details about your health.

Full Medical Underwriting

With FMU, you complete a medical questionnaire to give your insurer full details about your health history. The insurer uses this information to decide what will and won't be covered. This type often has lower premiums because the insurer knows the risks. Claims are also processed faster because your health history has already been checked.

Key Differences

Moratorium underwriting is quicker to start but can delay claims because your medical history is reviewed later.

Full medical underwriting takes longer at first but gives you clear coverage and lower premiums.

Understanding these differences helps you choose the best option for your health needs and budget.

Speed Application

Moratorium: fast, no forms. FMU: longer, full questionnaire required.

Clarity Coverage

Moratorium: unclear until claim. FMU: know exactly what is covered from day one.

Cost Premiums

FMU often has lower premiums because the insurer knows the risks upfront.

Claims Processing

Moratorium: slower (history checked at claim). FMU: faster (already reviewed).

Pre-Existing Handling

Moratorium: 2-year wait. FMU: assessed and decided at application.

Reset Rolling Risk

Moratorium resets if symptoms return. FMU exclusions stay fixed.

FMU Explained

What Does "Fully Medically Underwritten" Mean?

A "fully medically underwritten" policy means your insurer reviews your full medical history before approving your health insurance. You'll fill out a health questionnaire and might need to give extra details from your doctor.

This type of underwriting has some clear benefits:

Clear Coverage: You know from the start what is covered and what isn't, including pre-existing conditions.

Faster Claims: Because your medical history has already been checked, claims are processed more quickly.

Lower Premiums: Insurers set the price based on your health risks, which can mean lower costs.

Fully medically underwritten policies are a good choice if you want clear terms and don't have many pre-existing conditions. However, the application process takes more time, and it's important to share accurate medical information.

If you need more help deciding, speak to an insurance broker. They can guide you on the right health insurance plan and help you compare your options.

Moratorium Explained

What Does Moratorium Mean in Medical?

In health insurance, a moratorium refers to a waiting period applied to pre-existing conditions. This is often used in moratorium underwriting, where conditions you had before the policy start date are not immediately covered. Instead, if you remain symptom-free and don't need treatment for those conditions for a specific time—usually a two-year period—your insurer may start covering them.

This approach is common in private health insurance because it allows insurers to limit risks while still offering potential coverage for pre-existing conditions in the future. However, if symptoms or treatment occur during the waiting period, the moratorium period resets, delaying coverage further.

A moratorium health insurance policy works well if you have minor pre-existing conditions that are unlikely to require treatment soon. It's also faster to apply for because you don't need to submit a full medical record during the application process. However, it's important to understand the underwriting process and check with your insurer for clarity on what is excluded.

Full Underwriting

What is Full Underwriting in Insurance?

Full underwriting in insurance means your provider assesses your complete medical history before your policy starts. This is done through a medical questionnaire, which you fill out with details about your past and current health conditions. In some cases, the insurer might contact your doctor for additional information to ensure accuracy.

This process allows insurers to provide a clear list of exclusions for your policy. Unlike moratorium underwriting, full underwriting means you'll know from the start what is and isn't covered, including any pre-existing conditions.

Benefits of Full Underwriting

Transparency: You'll have a clear understanding of the coverage and type of underwriting applied to your policy.

Lower Premiums: Insurers can tailor the insurance premiums based on the assessed risks, which can lead to lower costs.

Faster Claims: Since your medical history is already reviewed, claims are processed more quickly.

This type of underwriting is suitable if you want certainty and clarity about your health insurance cover. It is particularly beneficial for those without major pre-existing medical conditions, as it can help secure a more cost-effective policy.

Why PMI

Why Get Private Health Insurance?

Private health insurance provides faster access to medical treatment, reduced waiting times, and personalised care compared to the NHS. Many people choose it so they can receive care quickly when an unexpected condition comes up. It also offers access to private hospitals, specialists, and facilities that might not be available through public healthcare.

Benefits of private health insurance:

Shorter Waiting Times: Avoid long delays for consultations or treatments.

Customised Coverage: Choose a health insurance plan that fits your healthcare needs.

Broader Options: Access a wider range of consultations, treatments, and facilities.

Specialist Care: Receive tailored care for conditions like mental health or chronic illnesses.

Flexibility: Policies can include optional benefits like dental care or physiotherapy.

Private health insurance is ideal for those seeking faster care, greater control over their health insurance cover, and access to advanced treatments. While it does involve paying premiums, the value lies in the improved speed and quality of healthcare.

How It Works

How Does Moratorium Underwriting Work?

Moratorium underwriting is a type of health insurance underwriting where pre-existing conditions are initially excluded but may be covered after a waiting period, usually a two-year period. To qualify for coverage of a previously excluded condition, you must remain symptom-free and not require treatment for it during this time.

Key Features of Moratorium Underwriting

No Medical Questionnaire: Unlike full medical underwriting, there's no need to disclose your complete medical history during the application process.

Pre-Existing Conditions: Conditions treated or diagnosed in the five years before the policy start date are excluded initially.

Symptom-Free Period: If you avoid symptoms or treatment for a two-year period, coverage may begin for the condition.

Rolling Moratorium: If symptoms return or treatment is needed during the waiting period, the clock resets.

This option is popular because it simplifies the underwriting process and allows for potential coverage of pre-existing conditions over time. However, it's essential to understand how the moratorium period works and check your policy for specific exclusions or conditions related to rolling moratoriums.

01

Apply

No medical questionnaire needed — fast and simple application.

02

5-Year Lookback

Conditions from the last 5 years are excluded initially.

03

2-Year Wait

Stay symptom-free for 2 years and conditions may be covered.

04

Rolling Reset

If symptoms return during the wait, the 2-year clock resets.

Not sure which underwriting method is right for you?

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When Is Private Health Insurance Worth It?

Private health insurance is worth considering if you want faster access to medical treatment, shorter waiting times, and personalised care that meets your specific healthcare needs. While the NHS provides excellent care, many people seek private medical insurance for additional benefits and flexibility.

Key Scenarios:

Long NHS Wait Times: If delays in accessing care impact your health or well-being, private health insurance can provide faster consultations and treatments.

Specialist Care: Policies often include access to private specialists for conditions like mental health or ongoing medical conditions.

Tailored Coverage: With a health insurance plan, you can customise coverage to include optional extras like physiotherapy or dental care.

Chronic or Complex Conditions: Access to private facilities and advanced treatments may enhance your care experience.

While it does require paying premiums, the value lies in the quicker care and flexibility it offers. For individuals or families seeking more control over their healthcare, private health insurance is a worthwhile investment.

Why Do I Need Private Medical Insurance?

Private medical insurance ensures faster access to healthcare, offering a safety net in case of unexpected medical conditions. It allows you to bypass long NHS waiting times and receive treatment in private facilities tailored to your needs.

Advantages of Having Private Medical Insurance:

Quick Access: Receive faster consultations, diagnoses, and treatments.

Personalised Plans: Choose a health insurance policy designed to match your specific requirements.

Coverage for Specialist Services: Policies often include treatments for conditions like mental health or physiotherapy.

Reduced Stress: Knowing you can address health concerns quickly is one less thing to worry about.

Optional Extras: Add-ons like dental care or alternative therapies can be included in many insurance plans.

Private medical insurance is particularly useful for those who value convenience, quicker access to care, and the ability to personalise their health insurance cover. It bridges the gap between NHS services and private healthcare, ensuring you get the treatment you need when you need it.

In-Depth Comparison

What is the Difference Between Moratorium Underwriting and Full Medical Underwriting?

Private medical insurance policies offer two main types of underwriting: moratorium underwriting and full medical underwriting (FMU). These options determine how insurers assess your medical history and handle pre-existing conditions under your policy. Both underwriting types allow you to tailor your type of cover to your healthcare needs while considering potential exclusions.

Moratorium Underwriting

A moratorium basis simplifies the application process by not requiring a detailed health questionnaire upfront. Instead, any related conditions tied to pre-existing medical conditions are excluded for a specified period, typically two years. If you remain symptom-free and avoid medical advice or treatment during this two-year period, those conditions may eventually be covered. However, the rolling moratorium means any symptoms or treatment resets the waiting period.

Benefits: Faster application process with less initial paperwork. Suitable for those without significant pre-existing conditions.

Drawbacks: Claims may take longer to process as insurers review your medical history at the time of claim. Higher insurance premiums due to uncertainty about risks.

Full Medical Underwriting

In contrast, FMU involves a detailed health questionnaire, requiring you to disclose your entire medical record, including any related conditions. The insurer evaluates your medical history and specifies what will and won't be covered from the outset.

Benefits: Greater clarity on exclusions and coverage. Faster claims processing, as no further medical information is needed at the time of claim. Often results in lower premiums for those without significant pre-existing medical conditions.

Drawbacks: Lengthier underwriting process due to detailed assessments. Requires full disclosure of all past health conditions.

Switching to a New Insurer

When changing insurers, understanding options like continued personal medical exclusions (CPME) and continued moratorium is crucial. CPME allows you to retain coverage for existing pre-existing conditions, provided they were covered under your previous policy. This approach prevents you from starting a new moratorium period or facing new exclusions.

Policies with medical history disregarded (MHD) are also available from some insurers. These plans do not consider past conditions, making them ideal for those seeking comprehensive coverage without concerns about their medical record.

Which Option is Right for You?

Choosing between moratorium underwriting and full medical underwriting depends on your health, budget, and coverage needs. If simplicity and speed are priorities, moratorium underwriting may work best. However, for clearer coverage and potentially lower costs, FMU could be the better choice.

For further information, consulting an insurance broker can help you make an informed decision. They can guide you through underwriting options, explain key differences, and provide tailored advice for your situation.

FAQs

Frequently Asked Questions

Yes, most private health insurance policies include coverage for cancer, but the specifics depend on the insurance company and type of plan. Comprehensive plans often cover diagnostics like MRIs, treatments such as chemotherapy and surgery, and follow-up care. However, the claims process may vary depending on the insurer and the underwriting method. Chronic conditions related to cancer may not be covered unless they meet the symptom-free requirement under moratorium underwriting or are clearly excluded with full medical underwriting. Always review policy terms and consult an insurance broker for clarity.

Yes, full medical underwriting usually results in lower premiums because the insurance company evaluates your medical history upfront. This allows for a clear understanding of risks, which streamlines the claims process. It also provides clarity on chronic conditions and other exclusions from the start.

Moratorium underwriting: A two-year waiting period applies to pre-existing conditions. If you stay symptom-free, coverage may begin. However, the claims process for conditions like chronic illnesses can be complex and depends on meeting the symptom-free criteria.

Full medical underwriting: Your insurance company assesses your medical history before the policy begins, ensuring chronic conditions and pre-existing issues are clearly outlined. This provides certainty and faster claims processing.

If you have chronic conditions requiring regular care, full medical underwriting is often a better choice. For resolved or minor conditions, moratorium underwriting might suffice.

Moratorium underwriting: Faster application but less clarity on claims for chronic conditions during the two-year symptom-free period.

Full medical underwriting: Clear exclusions and smoother claims process for chronic conditions, but the application takes longer.

Your choice depends on your healthcare needs and priorities. An insurance broker can help you compare options based on your circumstances and assist with navigating the claims process.

Still unsure? Talk to an adviser — it's free.

Call 0203 859 1822
How This Site Works

This site is run by My Health Protected, an FCA-authorised broker. Our guides compare UK private health insurance providers and are reviewed regularly against current insurer wording.

We aim to give you a clear, honest read on each insurer and plan: what is covered, what is not, where the trade-offs sit and where there might be gaps. Always read your own policy documents and check details directly with your insurer or a broker before you buy or switch.

If you would like a quote, or a second opinion on a plan you already hold, contact us. The advice is free, independent and without obligation.

Disclaimer

The information on this site is for general guidance only and not professional advice. For tailored advice or a personalised quote, contact us directly.

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Patrick Baxter, Founder of My Health Protected
About the Author

Patrick Baxter

Patrick Baxter is the founder of My Health Protected, an FCA-authorised independent health insurance broker based in London. LinkedIn →

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