If your health insurance claim has been denied in Maryland, you have specific legal rights to appeal that denial. This guide covers Maryland's unique appeal deadlines, the external review process, key state insurance laws that protect you, and how to file a complaint with the Maryland Insurance Administration. Understanding your state-specific rights is critical because Maryland may provide protections beyond the federal minimum.
Important Disclaimer
This guide is for informational purposes only and does not constitute legal advice. Insurance laws and regulations change. Contact the Maryland Insurance Administration at (410) 468-2000 or consult with a patient advocate or healthcare attorney for advice specific to your situation. Information current as of 2026-03-28.
Maryland Insurance Appeal Rights Overview
Maryland has among the strongest consumer protections nationally. The state mandates 60 PT/OT visits per year, fertility treatment coverage, comprehensive mental health parity, and has enacted robust surprise billing protections. The Maryland Insurance Administration actively enforces these protections. CareFirst BCBS dominates the market.
All Maryland residents with non-grandfathered health plans have appeal rights under the ACA, including the right to internal appeal and external review. Maryland may provide additional protections beyond federal requirements. Self-insured employer plans (ERISA plans) are subject to federal rather than state regulations for most purposes, though the ACA external review requirements apply to all non-grandfathered plans.
Maryland Quick Reference
- Internal appeal deadline: 180 days from the denial notice, consistent with ACA requirements
- Insurer response time: 30 days for standard appeals; 72 hours for urgent/expedited appeals
- External review binding: Yes
- Regulator: Maryland Insurance Administration
- Consumer hotline: (410) 468-2000
Internal Appeal Deadlines in Maryland
You must file your internal appeal within 180 days from the denial notice, consistent with ACA requirements. Do not miss this deadline — it may forfeit your right to appeal entirely. The insurer must respond within 30 days for standard appeals; 72 hours for urgent/expedited appeals.
To file your internal appeal, send a written appeal to the address listed on your denial notice (or Explanation of Benefits). Include your denial letter, a letter explaining why the denial should be overturned, relevant medical records, a letter of medical necessity from your treating physician, and any supporting documentation such as clinical guidelines or peer-reviewed research. Send everything by certified mail with return receipt, or use the insurer's online portal if available with delivery confirmation.
If your medical situation is urgent — meaning that waiting for a standard appeal decision could seriously jeopardize your life, health, or ability to regain maximum function — request an expedited appeal. Expedited appeals must be decided within 72 hours. Your physician may need to certify the urgency.
External Review Process in Maryland
Maryland has a state-administered external review process. After exhausting internal appeals, consumers can request an external review through the Maryland Insurance Administration. Decisions by the independent review organization are binding on the insurer.
To request external review in Maryland, file your request with the Maryland Insurance Administration after receiving your final internal appeal denial. Include a copy of the internal appeal denial, all documentation you submitted with your internal appeal, and any additional evidence or arguments. The external reviewer will evaluate your case independently and issue a binding decision.
External review is particularly valuable because the independent reviewer applies clinical evidence and medical guidelines rather than the insurer's internal criteria. In many states, external review overturns a significant percentage of denials.
Maryland Insurance Administration — Contact Information
| Detail | Information |
|---|---|
| Agency | Maryland Insurance Administration |
| Commissioner/Director | Kathleen Birrane |
| Phone | (410) 468-2000 |
| Address | 200 St. Paul Place, Suite 2700, Baltimore, MD 21202 |
| Website | https://insurance.maryland.gov/ |
The Maryland Insurance Administration can help you understand your rights, assist with the appeal process, investigate insurer conduct, and take regulatory action when insurers violate Maryland law. Do not hesitate to contact them — consumer assistance is part of their mission.
Key Maryland Insurance Laws
The following state laws provide specific protections for Maryland insurance consumers. These may exceed the federal minimum protections under the ACA:
| Law / Statute | Protection Provided |
|---|---|
| Maryland Insurance Article 15-10A | external review |
| IA 15-1003 | grievance process |
| SB 802 | surprise billing (2021) |
| IA 15-839 | fertility treatment mandate |
| IA 15-802 | mental health parity |
| IA 15-837 | 60 PT/OT visits per year mandate |
In addition to state laws, federal protections apply to all Maryland residents: the ACA (appeal rights, essential health benefits, preventive care), ERISA (for employer-sponsored plans), the No Surprises Act (surprise billing protections), and MHPAEA (mental health parity). Your appeal should cite both applicable state and federal laws.
How to File an Insurance Appeal in Maryland
Step 1: Review Your Denial Notice
Read your denial notice carefully. It must state the reason for denial, the specific criteria used, and your appeal rights including deadlines. If this information is missing, contact the Maryland Insurance Administration — incomplete denial notices may violate Maryland law.
Step 2: Gather Documentation
Collect your medical records, physician's letter of medical necessity, clinical guidelines supporting your claim, and any prior treatment records relevant to the denial reason.
Step 3: Submit Internal Appeal
Write your appeal letter citing specific denial reasons, applicable laws, and supporting evidence. Submit within the 180 days from the denial notice, consistent with ACA requirements deadline by certified mail or online portal.
Step 4: Contact the Maryland Insurance Administration
If your internal appeal is denied — or at any point if you need guidance — contact the Maryland Insurance Administration at (410) 468-2000. They can assist with your appeal and file a complaint against the insurer if appropriate.
Step 5: Request External Review
If the internal appeal is denied, request an external review through the Maryland Insurance Administration. The independent reviewer's decision is binding on the insurer.
Major Insurers in Maryland
Understanding which insurer you have helps target your appeal to their specific policies and appeal process:
| Insurer | Market Presence |
|---|---|
| CareFirst Blue Cross Blue Shield | dominant |
| Kaiser Permanente | Commercial insurer |
| UnitedHealthcare | Commercial insurer |
| Cigna | Commercial insurer |
| Priority Partners | Medicaid |
Each insurer has its own appeal process, forms, and contact information. Check your insurance card, EOB, or the insurer's website for specific appeal filing instructions. Use our insurer appeal contacts directory for direct appeal submission information.
Maryland Resources
These organizations may provide free assistance with your insurance appeal in Maryland:
- Maryland Insurance Administration Consumer Services
- AppealPro State Insurance Directory
- Free Appeal Letter Generator
- Appeal Deadline Calculator
Frequently Asked Questions
How do I file an insurance appeal in Maryland?
To file an insurance appeal in Maryland, submit an internal appeal to your insurer within 180 days of receiving the denial notice. Include your denial letter, relevant medical records, a letter of medical necessity from your physician, and any supporting documentation. If your internal appeal is denied, you may request an external review through the Maryland Insurance Administration. Contact the department at (410) 468-2000 for assistance with the appeal process. External review decisions are binding on the insurer.
What is Maryland's external review process?
Maryland has an external review process for health insurance denials. After exhausting your internal appeal, you can request an external review through the Maryland Insurance Administration. An independent review organization will evaluate your case, including medical records and clinical guidelines. The IRO decision is binding on the insurer. Expedited external review is available for urgent medical situations. Contact (410) 468-2000 for filing instructions and timeline information.
How do I file a complaint with the Maryland Insurance Administration?
You can file a complaint with the Maryland Insurance Administration through their website at https://insurance.maryland.gov/, by calling (410) 468-2000, or by writing to 200 St. Paul Place, Suite 2700, Baltimore, MD 21202. Include your policy information, a description of the issue, copies of denial letters and relevant correspondence, and the resolution you are seeking. The department will investigate your complaint and may mediate between you and the insurer.
What are my rights under Maryland insurance law?
Maryland insurance law provides several consumer protections including the right to appeal claim denials internally and externally, protections against unfair claims settlement practices, and mental health parity requirements. Federal protections under the ACA, ERISA, and the No Surprises Act also apply. Contact the Maryland Insurance Administration at (410) 468-2000 to understand the specific protections available under Maryland law for your situation.
Does Maryland have surprise billing protections?
Maryland consumers are protected by the federal No Surprises Act, which prohibits surprise billing for emergency services, air ambulance, and non-emergency services by out-of-network providers at in-network facilities. The state also has state-level surprise billing protections that may provide additional coverage beyond federal requirements. If you receive a surprise medical bill, contact both the Maryland Insurance Administration and the CMS No Surprises Help Desk.
Sources: Maryland Insurance Administration · ACA Section 2719 · Maryland state statutes · CMS. Disclaimer: This article is for informational purposes only. Insurance laws vary and change. Contact the Maryland Insurance Administration at (410) 468-2000 for current information. Last updated: 2026-03-28.