How to appeal a health insurance denial in Maryland
The exact steps for Maryland consumers: what the Maryland Insurance Administration does, how external review works in your state, and the federal deadlines that apply on top.
Maryland regulator
- Department
- Maryland Insurance Administration
- DOI site
- insurance.maryland.gov/
External review
- Program
- State-administered
- Deadline
- 4 months after final internal denial
- Official page
- Open →
Step-by-step in Maryland
- 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 Maryland Insurance Administration at insurance.maryland.gov/. 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 Maryland, external review is administered by Maryland Insurance Administration. The IRO decision is binding on the insurer.
Maryland program notes
Maryland's external review is administered under Md. Code, Ins. § 15-10A. The MIA assigns an IRO and tracks timelines.
How long do I have to appeal in Maryland?+
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 Maryland Insurance Administration?+
Yes, at https://insurance.maryland.gov/. 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 Maryland?+
An Independent Review Organization certified by Maryland Insurance Administration, 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 Maryland external review submission.