> ## Documentation Index
> Fetch the complete documentation index at: https://docs.denialbase.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Send us claims

> Files, one claim at a time, or straight from your billing system.

Send us the denied claims you wrote off or won't pursue. Everything you send lands in one place and our team
works it the same way. Owners and admins send; viewers can see what was sent.

<Note>Sending opens once your [business associate agreement](/guides/getting-started#the-business-associate-agreement) is signed.</Note>

## Upload files

**Send us claims → Upload files.** Drop in any number of files, up to 50 MB each:

* **835 remittance files** (ERA)
* **Billing exports** as CSV or Excel. We recognize athenahealth, ModMed, eClinicalWorks, NextGen, Kareo and
  AdvancedMD exports.
* **PDFs**: EOBs or denial letters.

Sending the same file twice doesn't create duplicates.

## Add one claim

**Send us claims → Add one claim** for a single denial: the patient's name and date of birth, account number,
the **claim number** from your billing system, the **payer claim number** from the EOB or denial letter (ICN or
DCN), the payer (and plan type if you know it), date of service, denial date, procedure code, the billed or
denied amount, and the denial codes or the reason in words. You can attach the denial letter or EOB.

The claim number is how we recognize the claim, here and through the API alike. Sending the same claim again
doesn't add it twice: the form tells you it was already sent. A claim number you already used for a different
patient or a different claim (another date of service or procedure) is refused, so check the number.

## Connect your system

**Send us claims → Connect your system** if your billing software or IT team can send claims for you. Create an
API key in **Settings → API keys** and send claims to the [claims API](/api-reference/introduction). The same key
reads where each claim stands.

## What you sent

Below the three options, **What you sent** lists every file, single claim and API batch: when, by whom, how many
claims, and where it stands.

| Status | Means |
| - | - |
| Received | We have it; review hasn't started. |
| Our team is reviewing | Our team is analyzing the claims. |
| In your report | The claims are in a report we delivered. |
| In appeal | We opened cases for some of these claims. |
| Needs a clearer copy | We couldn't read the file, or part of it. To do asks you for a better copy. |


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