How do I file an internal appeal with my health insurance company after they deny a claim for medical services in California?

To file an internal appeal, you must formally submit a written request to your health insurance company within 180 days of receiving their denial notice. Here is how to navigate the process: Step 1: Review Your Denial Notice Carefully read the denial letter, often called an Explanation of Benefits (EOB) or a formal "Notice of Denial." It must state the specific reason for the denial and provide instructions on how to file an appeal or "grievance" according to California law. Step 2: Act Within the Deadline You have 180 days (approximately six months) from the date on the denial notice to submit your appeal. Missing this deadline will likely result in forfeiting your right to appeal, so it is critical to act promptly. Step 3: Gather Supporting Documents Collect all evidence that supports your case. This includes the denial letter, a copy of your original claim, your relevant medical records, and most importantly, a letter of medical necessity from your doctor. This letter should explain why the service or treatment was necessary and directly address the insurance company's reason for denial. Step 4: Write and Submit Your Appeal Draft a clear letter stating that you are appealing the denial. Include your full name, health plan ID number, and the claim number. Briefly explain why you believe the denial was incorrect and list the supporting documents you have enclosed. Submit your appeal package according to the instructions in the denial notice (mail, fax, or online portal). For proof of delivery, always send it via certified mail with a return receipt requested. Important considerations: For standard appeals, your insurer generally has 30 days to decide on pre-service claims and 60 days for post-service claims. If your situation is medically urgent, you can request an expedited appeal, which requires a decision within 72 hours. Your doctor must certify that waiting for a standard appeal could seriously jeopardize your health. Keep a copy of everything you send. Note: This process is for the first-level internal appeal with your insurance company. If they deny your appeal, your next step is to request an Independent Medical Review (IMR) from the appropriate California state regulator. This is general information and does not constitute legal advice. For complex situations, consult with a qualified California attorney.