---
title: "MT Medicare Part B"
slug: "mt-medicare-part-b"
updated: 2026-04-07T17:27:41Z
published: 2026-04-07T17:27:41Z
canonical: "docs.claim.md/mt-medicare-part-b"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.claim.md/llms.txt
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# MT Medicare Part B

The MT Medicare Part B payer ID is 03001.

The Payer Specific Bill ID/Submitter ID for Montana Medicare Part B is a unique identifier that ensures accurate claim submission and processing for healthcare providers working with this specific payer, helping to streamline reimbursements and maintain compliance with Montana's healthcare billing requirements.

## Payer Specific Bill ID/Submitter ID

This payer requires a payer assigned ID number. This value can be sent in block 33b, bill_id Loop 2010AA, REF02, REF01=G2. This submitter ID value will be acquired during enrollment or by contacting Noridian EDISS.

![](https://cdn.document360.io/367e6528-88da-4443-9da1-fcdd7e6d4d49/Images/Documentation/image-1737136055305.png)

## Understanding Montana Medicare Part B Submitter ID Errors

If you encounter a claim rejected due to the **Submitter ID**, it may indicate that the Submitter ID used on the claim was invalid. For **Montana Medicare Part B**, the Submitter ID must begin with **“MT”** followed by **five or six digits** (for example, *MT123456*).

Below is an example of a claim rejection caused by an invalid Submitter ID: ![](https://cdn.document360.io/367e6528-88da-4443-9da1-fcdd7e6d4d49/Images/Documentation/image-1763698234762.png)

You may also receive an error message if the **Bill/Submitter ID field is left blank**. Ensure this field is completed using the correct Submitter ID format to avoid claim rejections.