On September 18, 2025, the US Department of Labor (DOL)’s Office of Workers’ Compensation Programs (OWCP) announced a new requirement for providers billing for injured worker treatment.

Effective September 20, 2025, all Billing Providers must include the following information with every bill:

• Billing Provider National Provider Identifier (NPI)
• Billing Provider Taxonomy Code

Further, the Billing Provider NPI and taxonomy information on the bill must match the information listed for an existing provider in the OWCP provider file.

For Rendering Providers billing as part of a group practice, the DOL requires all bills to include the Rendering Provider NPI (as daisyNews previously reported) and, as of September 20, the Rendering Provider Taxonomy Code.

The DOL notes that failing to include the required information may result in payment denials or delays. The DOL will reject electronic bills (e-bills) that do not include the required information.

Additionally, daisyBill has contacted the DOL’s Electronic Data Interchange (EDI) vendor regarding plans to specify the reasons the DOL rejects an e-bill, which may include a missing or ineligible NPI or taxonomy (or both) for the Billing or Rendering Provider (or both).

Below are essential details about this DOL billing change, including how to confirm or update the Billing and Rendering provider NPI and taxonomy information on file with the OWCP.

New DOL Billing Requirement: Include Billing Provider NPI & Taxonomy Code

According to a recent DOL announcement (emphases ours):

“Effective September 20, 2025, the Office of Workers’ Compensation Programs (OWCP) will require all providers to include both the billing National Provider Identifier (NPI) and taxonomy code…Providers must ensure that the submitted NPI and taxonomy match the information listed in their OWCP provider file.

Additionally, group practices must include servicing or rendering provider NPI and taxonomy when billing a professional claim. The submitted servicing or rendering NPI and taxonomy must be associated with an active servicing provider in the OWCP provider file.

Bills with mismatched or missing data may be delayed or denied.”

The DOL provides several instructional resources for providers, each tailored to a specific billing method:

• For Online Billing via Direct Data Entry: Refer to the Enter Bills Online Tutorial.
• For Electronic Data Interchange (EDI): Refer to the 837 Companion Guide.
• For Paper Billing: Refer to the Health Insurance Claim Form (OWCP-1500) or the Uniform Health Insurance Claim Form (OWCP-04) instructions.

Registering and Updating Information on OWCP

Before submitting bills, the DOL encourages providers to verify their NPI and taxonomy information on the Workers’ Compensation Medical Bill Processing (WCMBP) portal. Providers have three options for updating or adding information to the system:

• Online: Use the WCMBP portal. For specific instructions, including instructions on registering with the OWCP for WCMBP portal access, see the Updating Provider Information Resource Guide.
• Mail: Mail an updated Provider Enrollment Application (OWCP-1168) to:
  Provider Enrollment
  Department of Labor - OWCP
  P. O. Box 8312
  London, KY 40742-8312
• Fax: Fax an updated Provider Enrollment Application (OWCP-1168) to 888-444-5335.  

DOL e-Bill Rejection Reasoning

The DOL will reject e-bills that do not include the required NPI number and taxonomy code, or if the NPI and taxonomy code do not match an existing provider registered in the OWCP file.

Currently, when the DOL rejects an e-bill for failure to meet the new requirements, the ‘277 Acknowledgement’ (277 ACK) sent to the provider does not specify the reason the DOL rejected the e-bill.

A representative of the DOL’s EDI vendor, Acentra, confirmed to daisyBill that Acentra plans to update its 277 ACK files to indicate specific rejection reasons, e.g., missing or invalid NPI or taxonomy code.

Until the Acentra completes this 277 update, if the DOL rejects an e-bill, the provider must check the WCMBP portal to confirm that both the NPI and taxonomy code sent on the e-bill match the information in the portal.

daisyBill is happy to assist providers billing the DOL; contact our team using the pink chat icon on this screen or email us at info@daisybill.com.

Providers can also contact the DOL call center with billing questions, as follows:

• Division of Coal Mine Workers' Compensation (DCMWC):
  1-800-638-7072
• Division of Energy Employees Occupational Illness Compensation (DEEOIC):
  1-866-272-2682
• Division of Federal Employees' Compensation (DFEC):
  1-844-493-1966

As always, we’ll update readers on DOL billing requirements here on daisyNews.

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