When you face long-term injury, accident, or illness that prevents you from earning income, Long-Term Disability (LTD) is designed to protect your loss of wages. We understand that navigating an insurance claim following an accident is taxing enough on its own. The additional concern of not knowing it will be accepted because of pre-existing medical history is another hurdle; you may find the ambiguity to be unsettling, but it is not always a deterrence to getting compensation.  

In Canada, LTD coverage decisions must be grounded in the specific language of your policy, supported by evidence, and consistent with established legal principles. Medical history alone does not give free reign for an insurer to deny your claim. 

Allow our LTD lawyers to walk you through the complex role medical history plays in Long-Term Disability insurance.  

Understanding LTD Insurance and the Legal Framework in Canada  

As with any insurance claim, the legal nature of a Long-Term Disability claim will depend on your specific provider. There are two main forms of LTD coverage: 

  • Group Insurance, most commonly provided through your employer.  
  • Private Insurance, plans made through your life or health insurance provider. 

It is important to note that Long-Term Disability coverage is a legally binding contract.  

How Insurers Assess LTD Claims 

The process begins with assessing your claim submission, and it is in your best interest to be as thorough as possible when providing information regarding your claim. This includes: a detailed description of your disability, medical records, test results, statements and treatment plans from physicians and specialists. You will also need to explain how your disability impedes your ability to work. 

The importance of being detailed in your submission is because this information is what your insurance provider will use to assess your claim. The more comprehensive, the less wiggle-room for insurers to deny the validity of your claim.  

Typically, insurers will use the following factors for their assesment: 

  1. Vocational and Occupational Assessment: Evaluates a person’s skills, work history, and abilities to determine suitable job options or career paths. 
  1. Independent Medical Examinations (IME): A neutral medical evaluation conducted by a physician aside from your family doctor or specialist, to assess an individual’s health status. 
  1. Functional Capacity Evaluation (FCE): Tests a person’s physical and/or mental ability to perform work-related tasks and activities. 
  1. Policy Review: Examines insurance, workplace, or organizational policies to ensure compliance, clarity, and applicability to specific cases. 

Medical History and LTD Coverage: Core Concepts 

When a long-term disability claim is denied because of medical history, it’s usually rooted in a few key insurance concepts. Understanding these basics can help clarify what insurers are looking for and whether their decision is justified. Medical history may include: 

  • Diagnosed medical conditions 
  • Reported symptoms (even without a formal diagnosis) 
  • Doctor visits and specialist referrals 
  • Mental health treatment or counselling 
  • Medications prescribed 
  • Diagnostic testing (MRIs, bloodwork, imaging, etc.) 
  • Prior disability leaves or workplace accommodations 

It is important to note that insurers do not limit their review of your case to major illnesses. Something as minor as a complaint documented in your family doctor’s notes can later be surveyed and used as evidence for denial. 

Why Insurers Investigate Past Health Information 

Insurance companies investigate prior health information for several reasons. 

  1. Risk Assessment

Insurance is based on risk. When issuing coverage, insurers rely on accurate disclosure to evaluate how likely a claimant is to become disabled. If they later discover undisclosed medical issues, they may argue they were deprived of the opportunity to properly assess that risk. 

  1. Policy Enforcement

Insurers have a contractual obligation to apply the terms of the policy as written. If a pre-existing condition clause exists, they are entitled to determine whether it applies. That said, they must interpret and apply the clause fairly and in good faith. 

  1. Fraud Prevention

In rare cases, insurers investigate past medical records to ensure that claims are legitimate. While outright fraud is uncommon, insurers often justify broad record requests as part of their duty to verify claims. 

  1. Limiting Financial Exposure

It is also important to recognize a practical reality: long-term disability claims can involve substantial financial payments over many years. This creates an incentive for insurers to carefully examine any potential exclusion or technical defense. (That does not mean every investigation is improper. Claimants should understand that insurers are not neutral decision-makers, but contractual counterparties with their financial interests to account for.) 

Pre-Existing Condition Exclusions 

What Is a Pre-Existing Condition? 

Essentially, a pre-existing condition refers to any medical issue you have experienced before your coverage began.  In the context of insurance, the definition is often broad and vague.  

While wording varies between insurers and employers, group LTD policies often define a pre-existing condition using language such as: 

  • A sickness or injury for which the insured received medical care, consultation, treatment, services, or advice during the period immediately prior to the effective date of coverage. 

Your policy may include documented conditions and symptoms which should have required medical treatment. To reiterate, the exact wording and conditions will depend on your particular insurance plan, which is why we stress the importance of language. The exact language of your policy is what will be used to assess your claim, and what courts will use to interpret the outcome of your appeal in case of denial.  

How Insurers Use Pre-Existing Condition Clauses to Deny LTD Claims 

Most often, Long Term Disability claims are denied if your current injury can be tied back to or directly related to a previous medical condition. The existence of a previous medical condition can weaken your claim or lead to it being denied completely. (Insurers can only deny claims for this reason within a specified, agreed upon timeframe which will vary depending on your insurance policy. Further defined in point C.) 

For example, if you have received prior treatment for back pain, then file a claim for a disc injury; it may be denied for being too similar to previous injury prior to the incident that led to your current injury. 

Look-Back Periods and Time Limits 

The Look-Back Period is the timeframe for which your insurer can assess your pre-existing medical conditions to determine your coverage and possible exclusions. Most commonly, this is between 60-180 days prior to your claim.  

Look-Back assessments may also review: 

  • “Stable” Condition: A condition is often considered covered if it remained “stable.” This means no new symptoms, treatment, or changes in medication during the look-back period. 
  • Impact: If a condition flared up and required medical attention within this period, it may not be covered. 

The Exclusion Period 

Many policies also include a time limit, specifying that a pre-existing condition exclusion only applies if your disability begins within a certain period after coverage starts, often 12 or 24 months. This means that if you remain disability-free for that initial period, the exclusion may no longer apply. These timelines are technical but extremely important, as even small differences in dates can determine whether a denial is valid.  

What Counts as “Medical Care” Before Coverage? 

One of the most contested issues in pre-existing condition disputes is what qualifies as “medical care.” Policies may define medical care to include: 

  • Examinations 
  • Advice 
  • Prescriptions 
  • Referrals 
  • Therapy sessions 
  • Diagnostic investigations 

However, grey areas often arise. For example: 

  • Does a routine annual checkup count? 
  • What if you mentioned a symptom casually, but no treatment was recommended? 
  • What if medication was prescribed for one purpose but later linked to another condition? 
  • Does over-the-counter medication count if no doctor was consulted? 

Insurers may argue that almost any documented medical interaction qualifies as care. But courts often look at whether the care was meaningful, directed at the specific condition, and reasonably connected to the later disability. 

Other Medical History-Related Denial Triggers 

When applying for long-term disability insurance, there is an important legal distinction between an honest mistake or oversight and a material misrepresentation. For example, failing to disclose significant heart disease or a recent psychiatric hospitalization may be considered material, while forgetting to mention a minor, resolved condition from years earlier often would not, especially if it would not have affected underwriting. Insurers bear the burden of proving that any omission was both inaccurate and material to the risk. Because applications can be long and confusing, with broadly worded questions, courts frequently examine whether the questions themselves were clear and unambiguous. 

The Role of Independent Medical Examinations  

Another common source of conflict arises from differing medical opinions. Your treating physician, who has followed you over time, may conclude that you are unable to work, while the insurer may rely on your independent medical examinations. While these assessments are intended to be objective, they can feel brief or adversarial to claimants.  

When the opinions of treating and IME doctors conflict, courts typically consider factors such as the depth and duration of the treating relationship, the thoroughness of each assessment, whether the IME adequately reviewed the full medical record, and the consistency of the claimant’s reported symptoms.  

A disagreement between doctors does not automatically justify a denial; there must be reasoning and supporting evidence. 

Can an Insurer Deny LTD Coverage Solely Because of Your Medical History? 

Past injuries, episodes of depression, back pain, migraines, or other medical concerns are common. If insurance companies could deny claims solely on that basis, LTD coverage would offer little real protection. 

What matters is not whether you’ve had health problems before, but whether your medical history triggers a specific provision in your policy. LTD insurance is a contract. A denial must be tied directly to the wording of that contract. A properly defined pre-existing condition exclusion, a proven material misrepresentation on your application, or a failure to meet the policy’s definition of disability are required for a denial or exclusion. A brief complaint noted in passing may not automatically trigger a pre-existing condition exclusion. Similarly, vague symptoms without follow-up treatment may not meet the policy threshold. 

For example, an insurer must show that treatment occurred within the applicable look-back period and that your current disability is medically connected to that earlier condition. A vague statement that your condition “existed before” is not enough.  

What Do I Do If My Long-Term Disability Claim Is Denied Due to My Medical History? 

If your long-term disability claim is denied because of your medical history, it’s important to act quickly, but tactfully. A denial does not necessarily mean your claim lacks validity. Many medical history-based denials can be challenged successfully. 

  1. Carefully review the denial letter. Identify the exact reason for the denial. Is the insurer relying on a pre-existing condition clause? Alleged non-disclosure on your application? Insufficient medical evidence? 
  2. Request your complete claim file. You are generally entitled to obtain the insurer’s internal file, including medical reviews, adjuster notes, and any independent medical examination (IME) reports. This helps determine how the decision was made.
  3. Check the timelines. Review the coverage start date, the look-back period referenced, and any limitation deadlines for appealing or starting legal action. 

From here, you can begin the appeals process and seek legal advice.  

Most LTD policies, whether group or individual, allow some form of internal appeal or reconsideration. This process lets you submit additional medical records, updated specialist reports, clarifications from your treating physician, and written explanations addressing the insurer’s concerns. An appeal can be an important opportunity to strengthen your case, especially if the denial was based on incomplete records or a misunderstanding of your condition.  

Contacting a disability lawyer before filing an appeal can help you determine the best strategy. Appeals must be handled carefully; deadlines are strict, and anything submitted becomes part of the permanent record. Depending on your insurance, the appeals policy can range from clear but complex, to vague and confusing. No matter the case, it can be murky and stressful. An experienced disability lawyer can navigate these perplexities for you and help you achieve a fair outcome.