_Note from June 13, 2026._ All of our medical-necessity letter templates now have a "Personalize it" generator mode where you can fill in your information and download the letter as a ready-to-print PDF. ## How to use the form-filler When you open any of these letters, you'll see a "Personalize it" tab: - **Letter of Medical Necessity** — used for HSA or FSA reimbursement - **Doctor's Letter** — used for your tax records - **Insurance Appeal Letter** — used for appealing a denied claim - **Employer Reimbursement Request** — used when asking your employer to reimburse medical costs Fill in your patient information, diagnosis details, and provider information. The letter assembles as you type, showing you exactly what your provider will see. ## Next steps 1. Review the personalized letter on screen 2. Click "Download as PDF" to save it 3. Print it and bring it to your provider's appointment 4. Your provider signs the printed copy 5. Keep the signed letter with your records All form-fillers are free and require only your email for download access.
Personalizing your medical-necessity letters
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