Your doctor prescribed a medication. Your insurance said no. That decision is not final. Under federal law, every patient has the right to appeal a coverage denial — and many succeed when they follow the correct process.
This guide walks through each step: reading your denial letter, filing an internal appeal, requesting an external review, and finding your medication at the lowest cash price while you wait. Use RxDiff to compare prices while your appeal is pending.
Insurance companies deny prescriptions for several reasons: a product is not on the formulary, prior authorization was not obtained, step-therapy requirements were not met, a prescription is off-label, or the insurer found it not medically necessary. A denial letter must state the specific reason, so read it carefully and address that basis directly.
Federal law gives patients a right to challenge a health-insurance decision. Plans must offer an initial appeal process and access to independent review when an initial challenge fails. Response deadlines vary; urgent appeals may receive expedited handling.
Your right applies whether coverage is through an employer, the marketplace, or a government program. Processes vary between plans, so check the denial letter for filing instructions and deadlines.
An internal review is a formal request for reconsideration. This process generally comes before an external review. A strong filing includes a challenge letter, a letter of medical necessity, relevant records, and evidence that alternatives were tried or are inappropriate.
Keep copies of everything you submit — every letter, form, and confirmation. Your insurer must acknowledge receipt of your filing. If they don't respond within the required timeframe, contact your state insurance department.
If an internal challenge is denied, you may have a right to external review by an organization independent of the insurer. The insurer must follow a binding decision where applicable. Visit Healthcare.gov's appeals guide for guidance.
The outside review is especially powerful for medical necessity denials. An independent clinical reviewer assesses whether the insurer's decision was clinically appropriate based on your specific circumstances — not just their internal guidelines.
If waiting for a standard timeline would seriously jeopardize your health, request an expedited appeal. Federal law requires insurers to decide these within 72 hours. Contact your insurer directly and state explicitly that you are requesting expedited review — your doctor should support this with written documentation of clinical urgency.
If both your internal challenge and independent review are denied, additional options remain: filing a complaint with your state insurance department, requesting a formulary exception if the denial was formulary-based, asking your prescriber about clinically appropriate covered alternatives, and using a free discount card from RxDiff or GoodRx to get the lowest cash price while you explore other coverage options.
Find the lowest cash price on your denied medication while your appeal is pending.
Compare Prices on RxDiff →How do I appeal a health insurance prescription denial?
Read the denial letter, file an initial appeal with a challenge letter and supporting records, then request external review if available. Keep copies and meet every deadline.
How long does an insurance appeal take?
Timelines vary by plan and request type. The denial notice should state the expected response time; ask whether expedited review is available when the situation is urgent.
What is an independent review of an insurance denial?
An external review is conducted by an organization independent of the insurer. Availability and binding effect depend on applicable plan and jurisdiction rules.
What reasons do insurance companies give for denying prescriptions?
Common reasons include formulary limits, missing prior authorization, step therapy, off-label use, or a finding that a prescription is not medically necessary. Address the reason stated in the denial.
What should I do if I can't afford prescriptions while appealing?
Use a free discount card from RxDiff or GoodRx to find a current cash price. Ask your prescriber about samples and assistance programs. Check NeedyMeds.org for additional resources. Do not stop a critical prescription without consulting a healthcare provider.
Can I file an appeal myself or do I need my doctor?
You can file the appeal yourself — you have every right to do so without physician involvement. However, most successful appeals include a letter of medical necessity from your prescribing doctor. Working together with your prescriber typically produces the strongest documentation and the best outcome.
Medical Disclaimer: This content is for informational purposes only. Always consult your healthcare provider. Use RxDiff to compare current drug prices in your area.
Affiliate Disclosure: This post contains affiliate links to DrHouse, a telehealth prescription service. RxDiff may earn a commission at no additional cost to you. Made in accordance with FTC guidelines.
Affiliate Disclosure: This post contains affiliate links to DrHouse, a telehealth prescription service. RxDiff may earn a commission at no additional cost to you. Made in accordance with FTC guidelines.