As of April 27, 2020, the Division of Coal Mine Workers' Compensation (DCMWC) contracted with Acentra Health (formerly CNSI) to handle all medical bill processing.

Medical Providers access the system at to:

Check Eligibility - Learn if a patient is covered for a particular procedure. Providers may print a denial letter if the service is not covered by the Federal Black Lung Program.

Check Bill Payment - Learn status of submitted bills. Providers can view Remittance Vouchers (RVs).

Conduent continues to provide OWCP pharmacy bill processing services and is utilizing a new web address URL ( and new mailing address. See below.

DCMWC Medical Bill Operations

Telephone:  1-800-638-7072

Hours of Operation: Monday through Friday, 8:00 AM to 8:00 PM (EST.)

Mailing Addresses:

Mailing Addresses


Mailing Address

Provider Enrollment

U.S. Department of Labor OWCP/DCMWC
P.O. Box 8312
London, KY 40742-8312

General Bills (Treatment Bills)

U.S. Department of Labor OWCP/DCMWC
P.O. Box 8302
London, KY 40742-8302

General Correspondence, New Claim Applications, Diagnostic/Determination Bills, and X-Ray Disks

U.S. Department of Labor OWCP/DCMWC
P.O. Box 8307
London, KY 40742-8307

Pharmacy Bills

U.S. Department of Labor OWCP/DCMWC Pharmacy Bill Processing
P.O. Box 8309
London, KY 40742-8309

Physical Address for Federal Express/UPS/Courier deliveries ONLY

U.S. Department of Labor OWCP/DCMWC
Central Mailroom
1084 South Laurel Rd
London, KY 40744-7960


Please be sure to include the claim number on every page you mail or fax to OWCP.