PO Box 23456, Chattanooga, TN 37421 belongs to HealthSpring, the Medicare Advantage plans that used to be Cigna Medicare. Use it for new paper claims only. Appeals, reconsiderations and medical records go to other boxes.
HealthSpring, Medicare Advantage Claims
PO Box 23456
Chattanooga, TN 37421
What to mail here
- New CMS-1500 or UB-04 claims for HealthSpring Medicare Advantage members.
- Claims for older "Cigna HealthSpring" or "Cigna Medicare" cards. Since January 1, 2026, those members are HealthSpring members and use the same address.
- Electronic is better when you can: payer ID 52192 through Availity Essentials or your clearinghouse. You get an acceptance report, which is your proof of timely filing.
What not to mail here
- Medical records or itemized bills HealthSpring asked for: PO Box 20002, Nashville, TN 37228, fax 615-401-4642.
- Payment disputes and reconsiderations: PO Box 1004, Nashville, TN 37202.
- Appeals: the Dallas boxes, such as PO Box 650065.
Mail sent to the wrong box is not forwarded quickly, and the filing clock keeps running while it sits.
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Filing limit for claims sent here
HealthSpring's 2026 manuals give participating providers 180 days from the date of service and out-of-network providers 365 days. A corrected claim does not get a new clock. Count your exact dates with our HealthSpring timely filing guide.
37421 or 37422?
The claims box uses ZIP 37421. You will see 37422 in some searches, but 37422 belongs to the Cigna and HealthSpring appeal boxes in the 188000 range, not to this claims box.
Every HealthSpring address in one place
| What you are sending | Where it goes | |
|---|---|---|
| New paper claims | HealthSpring, Medicare Advantage Claims PO Box 23456, Chattanooga, TN 37421 | Details |
| Records and documents HealthSpring asked for | HealthSpring Claims Intake PO Box 20002, Nashville, TN 37228 Fax 615-401-4642 | Details |
| Reconsiderations and payment disputes | HealthSpring Reconsiderations PO Box 1004, Nashville, TN 37202 Fax 615-401-4642 | Details |
| Postservice appeals (participating) | HealthSpring Appeals PO Box 650065, Dallas, TX 75265 Fax 855-699-8985 | Details |
| Part C and non-contracted appeals | HealthSpring Medicare Advantage Appeals PO Box 650059, Dallas, TX 75265 Fax 855-350-8671 | Details |
Questions
Is PO Box 23456 Chattanooga Cigna or HealthSpring?
It is HealthSpring's claims box. HealthSpring is the Medicare Advantage business that used to be Cigna Medicare, so older cards and letters may still say Cigna HealthSpring.
Can I send an appeal to PO Box 23456?
No. It is for new claims only. Participating providers send postservice appeals to PO Box 650065, Dallas, TX 75265.
What is the payer ID for HealthSpring?
52192, through Availity Essentials or your clearinghouse.
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Sources: HealthSpring: Submitting claims. HealthSpring 2026 participating provider manual. Checked October 25, 2026. Payers move PO boxes without much notice. If the EOB, denial letter or ID card shows a different address, use that one. General information, not legal advice.