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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 Mar 31, 2026
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 via USPS
Articles
- 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?
Upload your claim packet and we will mail it.