How to appeal a health insurance denial in Connecticut
The exact steps for Connecticut consumers: what the Connecticut Insurance Department does, how external review works in your state, and the federal deadlines that apply on top.
Connecticut regulator
- Department
- Connecticut Insurance Department
- DOI site
- portal.ct.gov/CID
External review
- Program
- State-administered
- Deadline
- 4 months after final internal denial
- Official page
- Open →
Step-by-step in Connecticut
- Read the denial notice. The reason code drives your evidence and the appeal deadline is on the letter.
- File the internal appeal with your insurer within the plan's window (typically 180 days for ERISA/ACA plans; expedited turnaround 72 hours for urgent cases).
- Attach medical necessity evidence that maps to the exact denial reason: guideline citations, chart notes, prior-therapy documentation, peer-reviewed literature.
- Optional: file a complaint with Connecticut Insurance Department at portal.ct.gov/CID. A DOI complaint runs in parallel — it does not replace the internal appeal.
- Request external review within 4 months of the final internal denial. In Connecticut, external review is administered by Connecticut Insurance Department. The IRO decision is binding on the insurer.
Connecticut program notes
Connecticut's external review program covers adverse determinations and final adverse determinations under Conn. Gen. Stat. § 38a-591g.
How long do I have to appeal in Connecticut?+
Typically 180 days from the denial notice for ERISA/ACA plans to file an internal appeal, and 4 months from the final internal denial to request external review (45 CFR § 147.136(d)(2)(ii)).
Can I file a complaint against my insurer with the Connecticut Insurance Department?+
Yes, at https://portal.ct.gov/CID. Consumer complaints can prompt market-conduct review, but binding relief on a specific claim comes from internal appeal plus external review.
Who decides external review in Connecticut?+
An Independent Review Organization certified by Connecticut Insurance Department, with a physician reviewer in the relevant specialty.
What if my case is urgent?+
Request an expedited appeal. Insurers must decide within 72 hours if delay would jeopardize life, health, or ability to regain maximum function.
What federal law protects appeal rights?+
29 CFR § 2560.503-1 (ERISA claim procedure) for employer plans; 45 CFR § 147.136 (ACA internal appeal + external review) for all non-grandfathered commercial plans.
Upload the denial letter. We'll build the internal appeal packet and, if needed, the Connecticut external review submission.