You’re not alone with this letter
What does coordination of benefits mean on my bill?
When you have more than one health plan, “coordination of benefits” (COB) decides which plan pays first. Wrong order or missing COB paperwork can leave you with a balance that looks wrong. Upload the bill and any EOB so you can see which payer ran, what “primary/secondary” language means, and calm questions—not legal advice.
Take a photo of every page
Phone camera, or a PDF from your portal. Free one-line preview. Full understand + respond pack $8 from your pages — checklist and a calm draft. We don’t sell your documents or contact your insurer. Educational only; not legal advice.
Photo the papers in your hand
Camera is fastest on a phone. A PDF from your insurer portal works too. Add every page (up to 10).
We don’t sell your documents, and we never contact your insurer or collector. Default keep is about 30 days.
Not ready to upload yours?
Open a full sample pack (free) — then photo your real letter for a custom one.
What’s in the full pack
- Plain English of the amounts, dates, and asks on your pages
- Who to contact and a short checklist for this situation
- Call and email scripts written from your letter
- For collection notices: a debt validation–style draft when it fits
Why a clear response matters
Ignoring a letter rarely helps. A calm written or phone reply — asking for verification, itemization, or a dispute in the window they gave you — often puts the sender on a process they have to follow, and leaves you with a paper trail. We help you take that first step without sounding lost.
Educational only — not legal advice. Rights and deadlines depend on the document and your situation.
Why COB confuses people
Two plans can both be “real,” but only one is usually primary for a given claim. Providers may bill the wrong plan first, or wait on secondary while sending you a statement.
What to check first
Before you pay the full charge:
- Which plan name appears as primary on the EOB or bill
- Whether a secondary plan is listed or still pending
- Date of service vs when each plan was active
- Any rejection reason mentioning COB, eligibility, or other coverage
How we help
We turn the letters into a plain-English summary, money lines, and draft questions you can edit. We do not refile claims or call insurers for you. Educational only.
FAQ
- Does secondary insurance always wipe out my balance?
- No. Secondary may pay part, none, or apply its own deductible/coinsurance rules. Your EOBs are the source of truth for your claim.
Still holding the letter?
Take a picture of every page. Free preview first — unlock the full pack only if it helps.
Take a photo