IL · Health & Medical

Health & Medical in Illinois

By CanISueForThis Editorial Team Reviewed by Editorial Team Updated March 21, 2026

Key Illinois Law

Illinois Compiled Statutes 735 ILCS 5/13-212 (Medical Malpractice Act)

Illinois requires medical malpractice claims to be filed within two years of when the patient knew or reasonably should have known of the injury under 735 ILCS 5/13-212, with an absolute four-year repose period.

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Procedural Details in Illinois

Certificate of Merit Requirement

Illinois requires a physician's affidavit of merit (certificate of merit) under 735 ILCS 5/2-622, which must be attached to the complaint. The affidavit must be from a health professional in the same or related field and must state that the defendant deviated from the standard of care. Filing without this affidavit may result in dismissal of the case.

No Enforceable Damage Cap

Illinois courts struck down legislative caps on non-economic damages as unconstitutional (Best v. Taylor Machine Works, 1997; Lebron v. Gottlieb Memorial Hospital, 2010). As a result, there is no enforceable cap on non-economic damages in Illinois malpractice cases, making the state relatively plaintiff-favorable for high-value claims. Illinois juries determine the appropriate award for pain, suffering, and emotional distress without a statutory ceiling.

Fault Rules & Regulatory Oversight

Illinois applies modified comparative fault with a 51% bar — a patient found more than 50% responsible for their own injury may be barred from recovery. Complaints against physicians are handled by the Illinois Department of Financial and Professional Regulation (IDFPR), which investigates and may discipline, suspend, or revoke medical licenses.

Illinois Agencies & Resources

Illinois Department of Financial and Professional Regulation (IDFPR)

Licenses and disciplines physicians and other health care professionals in Illinois; handles complaints about standard-of-care violations.

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Illinois Department of Public Health

Oversees hospital licensing, patient rights, and health facility inspections in Illinois.

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Illinois Department of Insurance

Regulates health insurance and handles consumer complaints about coverage denials in Illinois.

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Frequently Asked Questions

How long do I have to file a medical malpractice lawsuit in Illinois?

Illinois provides a two-year statute of limitations from discovery of the malpractice under 735 ILCS 5/13-212, with an absolute four-year repose period. A physician certificate of merit under 735 ILCS 5/2-622 must be filed with or shortly after the complaint. Missing either deadline generally extinguishes the claim.

Does Illinois cap non-economic damages in malpractice cases?

No. Illinois courts struck down legislative damage caps as unconstitutional in 1997 and again in 2010. There is no enforceable statutory cap on non-economic damages (pain, suffering, emotional distress) in Illinois medical malpractice cases. Juries determine the appropriate non-economic award.

What is the certificate of merit requirement in Illinois malpractice cases?

Illinois Code 735 ILCS 5/2-622 requires a plaintiff's attorney to file an affidavit stating that they have reviewed the case with a health professional in the same specialty as the defendant, and that the professional has determined the defendant deviated from the standard of care. Without this affidavit, the court may dismiss the complaint.

How do I file a complaint against a doctor in Illinois?

Complaints against physicians may be filed with the IDFPR through its online portal at idfpr.illinois.gov. The IDFPR investigates and may discipline, suspend, or revoke medical licenses. Board actions are separate from civil litigation and do not result in financial compensation for patients.

What happens if the certificate of merit is challenged in Illinois?

Under 735 ILCS 5/2-622, if a defendant challenges the sufficiency of the certificate of merit, the court evaluates whether the affidavit adequately identifies the standard of care, the deviation, and the causal connection to the injury. If the court finds the certificate insufficient, the plaintiff may be granted leave to cure the deficiency, but repeated failures could result in dismissal. Illinois courts have generally held that the certificate of merit requirement is a procedural safeguard, not a substantive barrier, meaning a good-faith effort to comply is typically given consideration. However, filing without any certificate or with a fundamentally deficient one may result in dismissal with prejudice.

Can I sue a nursing home for neglect in Illinois?

Yes. The Illinois Nursing Home Care Act (210 ILCS 45/) provides residents of long-term care facilities with a private right of action for negligent care, abuse, or neglect. Successful plaintiffs may recover compensatory damages and, in cases of willful or wanton misconduct, punitive damages. The Act also allows recovery of attorney fees. Claims against nursing homes may be based on understaffing, failure to prevent falls, medication errors, bedsore development, or inadequate nutrition. The Illinois Department of Public Health also inspects nursing facilities and can impose sanctions for violations of care standards.

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By CanISueForThis Editorial Team Reviewed by Editorial Team Updated March 21, 2026