Illinois Claims Compliance

Key regulatory requirements, correspondence deadlines, and mandated forms for Illinois (IL).

Quick Reference

Key Deadlines

Acknowledgment
15 business/working days
Accept/Deny
REASONABLE
Investigation
21 business/working days (communicate if liability clear); REASONABLE (affirm/deny)
Payment
30 calendar days
Status Updates
75 calendar days

Requirements

  • Mandated Forms
  • Catastrophe Rules
  • Separate P&C / Life & Health
  • Fraud Warning
  • Depreciation Notice
  • E-Delivery (yes)

Regulatory Authority

Illinois Department of Insurance (IDOI)

122 S. Michigan Ave., 19th Floor, Chicago, IL 60603 and 320 West Washington Street, Springfield, IL 62767; Phone: 312-814-2420 or 217-782-4515; Website: http://insurance.illinois.gov/

Bad Faith: 215 ILCS 5/155

Key Statutes

  • Illinois Insurance Code, 215 ILCS 5/1 et seq.
  • 50 Ill. Adm. Code 919.10 et seq.
Last reviewed: April 1, 2026

Illinois follows the NAIC unfair claims settlement practices model closely. The state's claims regulations address both P&C and life/health lines with distinct requirements.

Acknowledgment

Insurers must acknowledge a claim within 15 business days of receiving proof of loss. The acknowledgment must identify the policy and begin the investigation process.

Denial Timeline

A coverage determination must be issued within 30 days of receiving proof of loss. The insurer may extend this by an additional 15 days if it provides written notice explaining the reason for the extension.

Explanation Requirements

Denial letters must state all bases for the denial, reference specific policy provisions, and inform the insured of available complaint processes through the Illinois Department of Insurance.

Applicable Letter Templates

No letter templates currently found for this jurisdiction.