A catastrophic injury can permanently change a person’s mobility, independence, ability to work, family responsibilities and long-term care needs. In Ontario motor vehicle accident claims, a finding of catastrophic impairment can also significantly increase access to medical, rehabilitation and attendant-care benefits.
Cambria Law Firm helps seriously injured people and their families understand the catastrophic impairment process, obtain appropriate medical evidence, address insurer disputes and pursue compensation arising from life-altering injuries.
Free consultation. Call 416-840-7545 to discuss a serious injury claim.
The Catastrophic Impairment (CAT) Designation: Why It Matters
In Ontario, a catastrophic impairment designation can significantly affect the amount of accident-benefit funding available after a serious motor vehicle accident.
- Non-catastrophic impairment: standard medical, rehabilitation and attendant-care coverage is generally limited to a combined maximum of $65,000, subject to the policy and applicable Statutory Accident Benefits Schedule rules.
- Catastrophic impairment: standard medical, rehabilitation and attendant-care coverage is generally available up to a combined maximum of $1,000,000.
- Optional increased coverage: Ontario drivers may purchase higher medical, rehabilitation and attendant-care limits, including increased catastrophic impairment coverage.
For automobile insurance policies entered into on or after July 1, 2026, Ontario changed the accident-benefits system. Medical, rehabilitation and attendant-care benefits remain mandatory, while several other accident benefits became optional coverage choices. This means the actual benefits available in a serious injury claim can depend on the policy purchased in addition to the SABS rules.
2026 insurance change: Do not assume that income replacement, caregiver, housekeeping or other accident benefits are automatically included in every new Ontario automobile policy. Coverage should be confirmed by reviewing the policy in force on the date of the accident.
For a detailed explanation of CAT designation, read our Catastrophic Injury in Ontario guide.
What Qualifies as a Catastrophic Impairment in Ontario?
Ontario’s Statutory Accident Benefits Schedule contains specific legal and medical criteria for determining whether an impairment is catastrophic. The criteria depend on the nature of the injury, the person’s age and the medical evidence.
Examples of qualifying categories include:
- Paraplegia or tetraplegia that meets the regulatory neurological and functional criteria.
- Severe impairment involving an arm or leg, including certain amputations or permanent loss of use.
- Total loss of vision in both eyes.
- Certain traumatic brain injuries, assessed using the specific criteria prescribed by the SABS.
- A physical impairment or combination of physical impairments resulting in the required whole-person impairment rating under the applicable medical guides.
- A combination of physical and mental or behavioural impairments that meets the regulatory threshold.
- Certain serious mental or behavioural impairments assessed under the prescribed criteria.
Important: CAT designation should not be reduced to a simple injury checklist. Ontario’s regulation contains detailed criteria, timing rules and assessment requirements. Whether a person qualifies depends on the medical evidence and the specific statutory test that applies.
The Cases We Handle
Traumatic Brain Injury
Traumatic brain injuries can affect memory, concentration, judgment, emotional regulation, communication, personality and the ability to function independently.
CAT assessment for traumatic brain injury is governed by specific SABS criteria. Depending on the case, medical evidence may involve neurologists, neuropsychologists, rehabilitation professionals and other regulated health professionals.
We focus on documenting the real functional consequences of the brain injury rather than relying on a single imaging result or diagnostic label.
Spinal Cord Injuries
Spinal cord injuries can create lifelong needs involving mobility equipment, attendant care, accessible housing, vehicle modifications, rehabilitation, home support and vocational planning.
We work with appropriate medical and rehabilitation professionals to understand both the immediate and future consequences of the injury and to document the care that may reasonably be required.
Amputations and Permanent Loss of Use
Amputation or permanent loss of use of a limb may require prosthetics, rehabilitation, home or workplace adaptations, vocational retraining and psychological support.
The catastrophic impairment analysis depends on the precise medical and statutory criteria rather than the injury label alone.
Severe Psychological and Behavioural Impairment
Some accident victims develop profound psychological, psychiatric or behavioural impairments that significantly affect their ability to function independently.
These cases may require detailed psychiatric, psychological, occupational and functional evidence to determine whether the applicable catastrophic impairment criteria are met.
Building the Medical and Rehabilitation Record
A catastrophic injury claim can involve more than legal documents. The medical and functional record is central to determining what care is required and whether the CAT criteria are met.
Depending on the case, the treatment and assessment team may include:
- Case managers coordinating treatment and rehabilitation services.
- Occupational therapists assessing function, safety, equipment and home-modification needs.
- Physiatrists, neurologists or other physicians assessing serious physical or neurological injuries.
- Neuropsychologists evaluating cognitive and behavioural consequences of brain injury.
- Psychologists or psychiatrists assessing serious mental or behavioural impairment.
- Future-care or life-care planning professionals where long-term care needs require detailed assessment.
- Vocational professionals evaluating return-to-work capacity and future employment limitations.
An application for determination of catastrophic impairment is generally made using the OCF-19, supported by the assessment required under the SABS.
What Happens If the Insurer Denies CAT Designation?
An insurer may accept or dispute an application for catastrophic impairment.
Under the SABS, after receiving a properly completed CAT application, the insurer must respond within the prescribed period and explain its medical and other reasons if it determines that the impairment is not catastrophic. The insurer may also require an examination under the SABS.
If CAT designation is disputed, the available next steps depend on the circumstances. Disputes concerning statutory accident benefits may be brought before Ontario’s Licence Appeal Tribunal (LAT).
A denial does not automatically mean the insurer acted in bad faith. The medical evidence, statutory criteria, insurer’s reasons and claims-handling conduct must be assessed individually.
Frequently Asked Questions
How long does a catastrophic injury claim take in Ontario?
There is no single standard timeline. A catastrophic injury claim may involve treatment, medical assessments, insurer examinations, CAT determination, accident-benefit disputes and a separate tort claim against an at-fault party.
Some matters resolve sooner than others. Complex cases involving significant future-care needs or disputed medical evidence can take substantially longer. The appropriate timeline depends on the facts of the individual claim.
What if the insurer denies my CAT application?
A denial can be reviewed against the medical evidence and the applicable catastrophic impairment criteria. Where a statutory accident-benefit dispute cannot be resolved directly with the insurer, the dispute may be brought before the Licence Appeal Tribunal.
Can my family members claim compensation?
In an appropriate tort claim, certain family members may be entitled to bring claims under Ontario’s Family Law Act for losses arising from injuries suffered by a spouse, parent, child or other qualifying family member.
The availability and value of a Family Law Act claim depend on the circumstances and should not be assumed simply because CAT designation has been granted.
Is there a deadline to apply for catastrophic impairment designation?
The SABS contains specific procedures and timing rules relevant to CAT applications and accident-benefit claims. A catastrophic impairment application is made through the prescribed process, generally using the OCF-19.
Because timing can affect benefits, medical evidence and dispute rights, a seriously injured person should obtain advice about the CAT application process as early as reasonably possible rather than relying on a general statement that there is “no deadline.”
Who can assess whether I meet the CAT criteria?
The SABS specifies who may conduct the assessment or examination supporting a catastrophic impairment determination. Generally, the assessment is conducted by a physician, although a neuropsychologist may conduct the assessment where the impairment is a traumatic brain impairment only. Other regulated health professionals may assist where appropriate.
Catastrophic Injury Lawyer in Mississauga
A catastrophic injury case can involve accident benefits, medical and rehabilitation funding, long-term care, income loss, future-care costs and a separate lawsuit against an at-fault party.
Contact Nav Aujla at Cambria Law Firm to discuss a catastrophic injury claim in Mississauga or elsewhere in Ontario.
Personal Injury Disclaimer: This page provides general legal information only and does not constitute legal advice. Accident-benefit entitlement, CAT designation, insurance coverage and compensation depend on the facts of the individual case, the policy in force and applicable Ontario law.
Official Sources
- Financial Services Regulatory Authority of Ontario — Customize your liability and accident benefits coverage:
https://www.fsrao.ca/consumers/auto-insurance/purchasing-your-policy/customize-your-liability-and-accident-benefits-coverage
- Financial Services Regulatory Authority of Ontario — Changes in Statutory Accident Benefits coverage in Ontario on July 1, 2026:
https://www.fsrao.ca/industry/auto-insurance/changes-statutory-accident-benefits-coverage-ontario-july-1-2026
- Ontario Regulation 34/10 — Statutory Accident Benefits Schedule:
https://www.ontario.ca/laws/regulation/100034
- Financial Services Regulatory Authority of Ontario — OCF-19 Application for Determination of Catastrophic Impairment:
https://www.fsrao.ca/consumers/auto-insurance/auto-insurance-consumer-forms
