What actually matters
- Confirm coordination-of-benefits order up front — which plan is primary — before you bill anyone
- File to secondary only after the primary adjudicates, and include the primary's payment and adjustment detail (the 835/EOB data)
- Send electronically with the primary remittance attached; missing COB info is the top secondary-denial reason
- Watch the secondary's own timely-filing clock — it often starts from the primary's remittance date
- Work secondary balances deliberately; they're small individually and easy to abandon, which is exactly why they leak
Common questions
Why do secondary claims get denied?
Most often for missing coordination-of-benefits information — the secondary payer needs the primary's payment and adjustment detail, and without the primary EOB/835 attached, it can't process the claim. Wrong primary/secondary order is the other common cause.
When do I file the secondary claim?
After the primary payer adjudicates, using the primary's remittance. Watch the secondary payer's timely-filing window, which often runs from the primary's remittance date, so a slow primary can eat into your secondary filing time.
Where Volari fits: Unworked secondary balances are small-dollar claims that leak because chasing each by hand isn't worth it — the same economics as the denial pile Volari is built to recover.
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