Health insurance
Health insurance claim mailing guides
Browse guides for mailing health insurance claims and supporting documents. Use these when a payer requests paper submission or additional records, or when the official process still starts with a PDF form that you would rather complete in a guided online workflow.
Published Jan 16, 2026 • Updated Apr 24, 2026
How it works
Fill out form
Complete the guided fields online.
Preview PDF
Review the generated PDF before mailing.
We print and mail it via USPS.
Common reasons to mail a claim packet
- A payer requires mailed forms or signatures
- You need to include supporting medical records
- A claim was denied and needs additional documentation
What to include
- Claim forms (CMS-1500 or payer-specific forms)
- Itemized bills and receipts
- Provider notes or referrals, if required
- A brief cover letter with claim details
How it works with PostalForm
- Start with a guided workflow or finished packet
- Review the generated PDF and attachments
- Follow the workflow's delivery boundary — supported claim packets may go to a verified plan recipient; customer-assembly forms are mailed only to you for signatures, physical records, and final submission.
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Which mailing option and proof should you choose?
PostalForm offers U.S. letter mailing with different delivery and proof options. First-Class suits routine correspondence; Certified Mail adds mailing and delivery records, and Electronic Return Receipt adds a downloadable signature record. Expedited delivery prioritizes speed. Review the destination, estimated dates, total price, and required proof before paying.
| Mailing option | Delivery speed | Proof | Use when | Avoid when |
|---|---|---|---|---|
| USPS First-Class Mail | First-Class Mail delivery estimate shown before payment. | Available processing scans; no recipient signature or Certified Mail receipt. | Routine letters when a signed delivery record is unnecessary. | Your instructions require Certified Mail, a signature, or a deadline this estimate cannot meet. |
| Certified Mail | First-Class delivery speed; certification does not make delivery faster. | USPS mailing and delivery/attempt tracking; no Electronic Return Receipt unless added. | You need a recorded mailing and delivery or attempted-delivery status. | You need a downloadable signature record or faster delivery. |
| Certified Mail + Electronic Return Receipt | First-Class delivery speed; signature collection may require redelivery or pickup. | Certified Mail records plus a downloadable USPS signature record when available. | Your instructions call for Certified Mail with Return Receipt or you need the signature record. | Your recipient requires an original enclosure, personal service, or another submission method. |
| Expedited / Express with signature | Faster estimated delivery range shown at checkout; production cutoff and destination apply. | Carrier tracking and signature option; this is separate from Certified Mail and ERR. | Speed and signature matter and checkout offers the service for your destination. | A rule specifically requires Certified Mail or the displayed estimate misses your deadline. |
Availability and delivery estimates depend on the document and destination. Mailing proof does not establish that a recipient accepted a filing or that legal service requirements were met. Delivery estimates · Full pricing
Ready to get started?
Start with the guided health insurance packet workflow if you want the cover page, summary, and exhibit order assembled for you.