Illinois Insurance Appeal Laws & Rights

Illinois provides strong consumer protections for insurance appeals through the Department of Insurance, with a comprehensive external review program and specific protections for mental health parity and surprise billing.

Regulatory Agency

Illinois Department of Insurance (DOI)

Phone: 1-866-445-5364
Website: insurance.illinois.gov

Key Protections

External review for medical necessity and experimental treatment denials
Mental health parity enforcement
Surprise billing protections (SB 1264)
Step therapy exception rights
Prompt pay requirements (30 days)
Short-term health plan consumer protections

Appeal Timeline
Step Deadline
Internal appeal Per plan terms
External review 4 months from final denial
| DOI complaint | File at any time |

Step	Deadline
Internal appeal	Per plan terms
External review	4 months from final denial

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Frequently Asked Questions

How do I appeal an insurance denial in Illinois?

File an internal appeal with your insurer first. If denied, you can request an external review through the Illinois Department of Insurance within 4 months of the final internal denial, or file a complaint at insurance.illinois.gov.