Skip to contentPostalForm
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
Step 1
Fill out form
Complete the guided fields online.
Step 2
Preview PDF
Review the generated PDF before mailing.
Step 3Mail
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
- Checkout and we mail it through the appropriate mailing provider
Articles
- Mail a health insurance claim packet online
- Mail accident-related health insurance claims with attachments
- CMS-1490S Medicare claim guide (when beneficiaries should file)
- CMS-1490S attachment checklist (itemized bills, EOBs, and signature rules)
- CMS-20027 Medicare redetermination guide
- CMS-20027 vs CMS-20033 (which Medicare appeal form do you need?)
- CMS-20033 Medicare reconsideration guide
- CMS-20031 transfer of appeal rights guide
Related forms
Related resources
Ready to send it?
Start with the guided health insurance packet workflow if you want the cover page, summary, and exhibit order assembled for you.