A Complete Guide on Pre-Existing Diseases (PED) and Waiting Periods in Health Insurance

Health insurance is a risk management tool that protects you against high and unexpected medical expenses. However, before certain benefits become available, you must complete an initial waiting period. This period lasts between 30 days and 3 years, depending on your pre-existing diseases.

Here’s a complete guide on pre-existing diseases (PED) and waiting periods in health insurance.

What is a Pre-Existing Disease (PED)?

According to the Insurance Regulatory and Development Authority of India (IRDAI), a Pre-existing Disease (PED) is any condition, ailment, injury, symptoms, or disease that was diagnosed by a physician, or for which medical treatment was recommended by or received from a physician, within 36 months before the commencement of your health insurance policy.

If a policyholder is diagnosed with any disease within the first three months of availing a health insurance policy, it will no longer be considered a pre-existing disease. For an illness to be considered PED, it has to be diagnosed or treated before the commencement of the health insurance policy.

Having a pre-existing condition doesn’t mean your health insurance won’t cover it; however, you need to complete the applicable waiting period before the disease is covered.

Common Pre-Existing Diseases

The following diseases are considered pre-existing diseases if they were diagnosed or treated prior to your health insurance coverage kicking in.

• Diabetes
• Hypertension
• Thyroid disorders
• Asthma
• Heart disease
• Arthritis
• Kidney disease
• High cholesterol
• Obesity-related conditions

What is a Waiting Period in Health Insurance?

In health insurance, a waiting period is the initial period during which you cannot file a claim for any illnesses or certain pre-existing diseases that are temporarily excluded from your policy coverage. However, hospitalisation due to accidental injuries is generally covered from the first day of the policy, subject to the policy's terms and conditions.

Most health insurance policies have a standard waiting period of 30 days. This is intended to prevent fraud where individuals buy insurance after being diagnosed with an illness and cover their immediate medical expenses. The waiting period ensures policyholders pay their premiums before raising any claims, protecting the insurance provider from immediate payouts, which keeps premiums affordable for other insurance buyers.

Real-Life Example:

Let’s say you buy a comprehensive health insurance policy on January 1, 2026, and disclose at the time of purchasing the policy that you were diagnosed with Type 2 diabetes. Your health insurance policy has a specified waiting period of 2 years for pre-existing diseases.

If you are hospitalised due to blood sugar spikes during the two-year waiting period, you cannot file a claim for the medical expenses incurred, and if you do, your insurance provider will reject the claim. You will have to pay for the hospitalisation expenses yourself.

However, once the waiting period is over, if you are hospitalised due to a diabetes-related health issue, you can file a claim for the expenses incurred. Since the two-year waiting period has ended, your insurance provider will approve the claim in accordance with the policy's terms and conditions and cover the expenses.

Types of Waiting Periods in Health Insurance

The following are the types of waiting periods in health insurance.

Initial Waiting Period

Every health insurance policy has a standard waiting period of 30 days from the policy commencement date. During this waiting period, all medical expenses must be paid by the policyholders. But accident-related hospitalisation expenses are covered by health insurance from day one.

Pre-Existing Diseases Waiting Period

For pre-existing diseases, insurers can impose a waiting period of up to 36 months, as per IRDAI regulations. During this period, policyholders cannot file claims for medical expenses arising from pre-existing diseases.

Disease-Specific Waiting Period

The waiting period varies depending on the PED and other diseases. Certain conditions such as cataracts, hernias, or joint replacements are commonly subject to a disease-specific waiting period before related claims become eligible.

Maternity Waiting Period

Maternity health insurance plans or maternity cover under a broader health insurance usually have a waiting period of 9 months to 3 years, depending on the insurer and the policy selected.

Why Do Health Insurance Companies Have Waiting Periods?

Here’s why health insurance companies have waiting periods on insurance coverage.

Prevent Adverse Selection

Adverse selection occurs when individuals buy health insurance only after being diagnosed with an illness with high medical expenses. Such individuals are more likely to buy health insurance compared to healthy individuals, potentially leading to a high-risk group and high payouts.

A waiting period prevents adverse selection by ensuring that policyholders pay their premiums for a specific period before claiming benefits for pre-existing diseases. This helps balance the pool of insured individuals where both healthy and high-risk individuals contribute fairly.

Reduce Fraudulent Claims

A waiting period helps reduce fraudulent claims, where the policyholder intentionally purchases health insurance after being diagnosed, receiving treatment, or experiencing symptoms without declaring their pre-existing diseases during the application process.

Premium Stabilisation

Health insurance works on the principle of risk sharing, where the premiums collected from a pool of policyholders are used to cover the medical expenses of those who require treatment. If the insurance provider covers high medical expenses for pre-existing diseases right after issuing the policy, the claim payouts would rise significantly.

Waiting periods help spread the risk over time, allowing insurers to manage claims efficiently.

Encourage Long-term Policyholders

Health insurance is designed to provide long-term financial protection, and hence waiting periods encourage young people to purchase insurance early on while they are healthy and renew their policies regularly. This practice promotes effective financial planning and keeps policyholders protected from unexpected and high medical expenses.

IRDAI Guidelines on Pre-Existing Diseases

The following are the IRDAI guidelines on pre-existing diseases.

Definition of PED

A PED is defined as any medical condition, ailment, injury, or disease that was diagnosed, or for which medical treatment or consultation was received, within 36 months immediately before the effective date of the health insurance policy.

3-Year Waiting Period

The IRDAI has changed the maximum waiting period for pre-existing diseases from four years to 3 years. Once the waiting period ends, all medical expenses incurred in treatment of the PED must be covered.

No Waiting Period for Undetected Ailments

As per IRDAI guidelines, if the illness occurs or is diagnosed within the first 3 months of the health insurance policy, it cannot be considered a pre-existing disease, provided that there were no prior signs, symptoms, or consultations received before the purchase of the policy. The medical expenses for these diseases must be covered by the insurance provider.

Mandatory Disclosure

Policyholders are legally required to disclose all past medical conditions, diagnoses, and treatments received. Intentionally hiding a pre-existing condition can result in claim rejections or policy cancellations, making your policy null and void.

5-Year Moratorium

Under the 2026 reforms, the IRDAI has capped the moratorium period at 5 years. If a health insurance policy has been consistently active for 60 months, i.e 5 years, without a lapse, the insurer cannot reject a claim on the grounds of non-disclosure or pre-existing diseases, unless it is proven to be a fraud.

Waiting Periods for Specific Diseases

Certain ailments or medical procedures, such as joint replacements, cataract, hernia, etc typically have a shorter waiting period of 1 to 2 years, instead of the full 3-year PED waiting period.

What Happens If You Don't Declare a PED?

The following are the consequences of not declaring pre-existing diseases before buying health insurance.

Claim Rejection

If you file a claim for medical expenses for a pre-existing disease that wasn't declared before buying a health insurance policy, the insurer has the legal right to deny coverage for those medical expenses.

Policy Cancellation

If you fail to disclose your pre-existing conditions, your insurance provider may void your policy, resulting in the loss of your coverage and any premiums you've paid.

Legal and Financial Liability

In cases of deliberate fraud, such as submitting false medical records to conceal known ailments, the insurer can press criminal charges against the policyholder.

How to Reduce the Waiting Period on Health Insurance?

Here’s how you can reduce the waiting period on a health insurance policy.

Buyback Riders

Policyholders can reduce the standard waiting period on pre-existing disease or maternity coverage from 3 years to 1 year by paying an additional premium.

Portability

Policyholders can transfer their active health insurance policy to a new provider while carrying forward the waiting period credits they have already accrued. However, if the new insurer has a longer waiting period, they may have to complete the difference.

Zero Waiting Period Plans

Some specialised policies or add-on covers waive the standard 30-day initial waiting period or shorten specific disease waits, though these typically come with higher premiums.

Corporate-to-Retail Conversion

If you are leaving a job, convert your group corporate health policy into an individual policy with the same insurer. They often allow you to transfer the waiting period credits you accrued under the group plan.

Tips to Buy Health Insurance If You Have a Pre-Existing Disease

The following are some tips to help you select a health insurance policy if you have pre-existing diseases.

Day 1 Coverage

Certain health insurance plans offer day-one coverage or instant coverage add-ons for pre-existing diseases such as hypertension and diabetes. Opt for these plans if you want a health insurance policy with no waiting period or a shorter waiting period.

Specialized Policies

Insurance providers are now launching targeted health insurance plans for certain diseases such as Star Diabetes Safe or Care Heart. These plans are designed specifically for certain chronic conditions to offer customised coverage.

Pre-Existing Disease (PED) Riders

You can opt for a comprehensive health insurance plan with pre-existing disease riders, which allows you to reduce your waiting period by paying an extra premium.

Compare Network Hospitals

Use the insurer's Hospital Network Locator to identify nearby multi-speciality network hospitals to ensure cashless treatment for your condition during emergencies.

FAQ

What is considered a pre-existing disease?

Pre-existing diseases (PED) are diseases, injuries, or medical conditions that were diagnosed before taking a health insurance plan. They include diabetes, high blood pressure, asthma, and thyroid diseases.

Can I obtain health insurance despite being a diabetic?

Yes. Most of the health insurers provide health insurance coverage even for diabetics; however, all diabetes treatment would be covered after the completion of the waiting period.

Is hypertension a pre-existing disease?

Yes. High blood pressure, if diagnosed before taking health insurance, is considered a pre-existing disease.

Will insurance companies reject my claim due to pre-existing diseases?

Some of the health insurers may reject claims if the health risk is too high; nevertheless, many of the insurers provide insurance with waiting periods or other conditions.

What will happen when the waiting period ends?

After the waiting period ends, all eligible medical expenses in respect of pre-existing disease would be covered as per your policy's terms and conditions.

Is there any health insurance without a waiting period?

Some employer group health insurance plans may cover pre-existing diseases from day one. Individual health insurance plans usually have a waiting period.

Can I switch insurers during the waiting period?

Yes, you can port your health insurance to another insurer. Depending on the new insurer's policy and IRDAI portability rules, you may receive credit for the waiting period already completed.

Does employer insurance cover pre-existing diseases immediately?

Many employer-provided group health insurance plans offer immediate coverage for pre-existing diseases. However, the benefits vary from one employer and insurer to another.

What if I forget to disclose a disease?

If you don't disclose a pre-existing disease, the insurer may reject related claims or take action according to the policy terms. It's highly recommended to provide complete and accurate information to your insurance provider during the application process.